datasheet
EEWORLDEEWORLDEEWORLD
Datasheet
Part Number

Keyword

Search
Keyword

Part Number

Search
Datasheet> All Categories > LTC1198-2BCS8
PDF
Preview

LTC1198-2BCS8

Description
2-Channel Single ADC SAR 750ksps 8-bit Serial 8-Pin SOIC N
File Size902KB，28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC1198-2BCS8 Overview

2-Channel Single ADC SAR 750ksps 8-bit Serial 8-Pin SOIC N

LTC1198-2BCS8 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
SVHCYes
SVHC Exceeds ThresholdYes
Converter TypeGeneral Purpose
ArchitectureSAR
Resolution8bit
Number of ADCs1
Number of Input Channels2|1
Sampling Rate750ksps
Digital Interface TypeSerial (3-Wire, 4-Wire, SPI)
Input TypeVoltage
Input Signal TypeDifferential|Single-Ended
Voltage ReferenceSupply
Polarity of Input VoltageUnipolar
Voltage Supply SourceSingle
Input Voltage5V
Minimum Single Supply Voltage (V)2.7
Typical Single Supply Voltage (V)5|3
Maximum Single Supply Voltage (V)6
Typical Power Dissipation (mW)50
Maximum Power Dissipation (mW)500
Integral Nonlinearity Error±1LSB
Full Scale Error±1LSB
No Missing Codes (bit)8
Sample and HoldYes
Single-Ended InputYes
Digital Supply SupportNo
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Supplier Temperature GradeCommercial
Pin Count8
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing

LTC1198-2BCS8 Preview

LTC1196/LTC1198
8-Bit, SO-8, 1Msps ADCs
with Auto-Shutdown Options
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
DESCRIPTION
The LTC
®
1196/LTC1198 are 600ns, 8-bit A/D converters
with sampling rates up to 1MHz. They are offered in 8-pin
SO packages and operate on 3V to 6V supplies. Power
dissipation is only 10mW with a 3V supply or 50mW with
a 5V supply. The LTC1198 automatically powers down
to a typical supply current of 1nA whenever it is not
performing conversions. These 8-bit switched-capacitor
successive approximation ADCs include sample-and-
holds. The LTC1196 has a differential analog input; the
LTC1198 offers a software selectable 2-channel MUX.
The 3-wire serial I/O, SO-8 packages, 3V operation and
extremely high sample rate-to-power ratio make these
ADCs an ideal choice for compact, high speed systems.
These ADCs can be used in ratiometric applications or
with external references. The high impedance analog in-
puts and the ability to operate with reduced spans below
1V full scale (LTC1196) allow direct connection to signal
sources in many applications, eliminating the need for
gain stages.
The A-grade devices are specified with total unadjusted
error of ±1/2LSB maximum over temperature.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
High Sampling Rates: 1MHz (LTC1196)
750kHz (LTC1198)
Low Cost
Single Supply 3V and 5V Specifications
Low Power: 10mW at 3V Supply
50mW at 5V Supply
Auto-Shutdown: 1nA Typical (LTC1198)
±1/2LSB Total Unadjusted Error over Temperature
3-Wire Serial I/O
1V to 5V Input Span Range (LTC1196)
Converts 1MHz Inputs to 7 Effective Bits
Differential Inputs (LTC1196)
2-Channel MUX (LTC1198)
SO-8 Plastic Package
APPLICATIONS
n
n
n
n
High Speed Data Acquisition
Disk Drives
Portable or Compact Instrumentation
Low Power or Battery-Operated Systems
TYPICAL APPLICATION
Single 5V Supply, 1Msps, 8-Bit Sampling ADC
1μF
5V
EFFECTIVE NUMBER OF BITS (ENOBs)
Effective Bits and S/(N + D) vs Input Frequency
8
7
6
5
4
3
2
1
0
1k
T
A
= 25°C
10k
100k
INPUT FREQUENCY (Hz)
1M
11968 TA01b
50
V
REF
= V
CC
= 2.7V
f
SMPL
= 383kHz (LTC1196)
f
SMPL
= 287kHz (LTC1198)
V
REF
= V
CC
= 5V
f
SMPL
= 1MHz (LTC1196)
f
SMPL
= 750kHz (LTC1198)
44
1
2
ANALOG INPUT
0V TO 5V RANGE
3
4
CS
+IN
–IN
GND
LTC1196
V
CC
CLK
D
OUT
V
REF
8
7
6
5
1196/98 TA01
S/(N + D) (dB)
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP,
OR SHIFT REGISTERS
119698fb
1
LTC1196/LTC1198
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (V
CC
) to GND .................................... 7V
Voltage
Analog Reference ....................... –0.3V to V
CC
+ 0.3V
Digital Inputs ......................................... –0.3V to 7V
Digital Outputs ........................... –0.3V to V
CC
+ 0.3V
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC1196-1AC, LTC1198-1AC, LTC1196-1BC,
LTC1198-1BC, LTC1196-2AC, LTC1198-2AC,
LTC1196-2BC, LTC1198-2BC ................. 0°C to 70°C
Storage Temperature Range.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................ 300°C
PIN CONFIGURATION
LTC1196
CS
1
+IN 2
–IN 3
GND 4
TOP VIEW
8
7
6
5
V
CC
CLK
D
OUT
V
REF
LTC1198
CS/
1
SHUTDOWN
CH0 2
CH1 3
GND 4
TOP VIEW
8
7
6
5
V
CC
(V
REF
)
CLK
D
OUT
D
IN
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 175°C/W
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 175°C/W
ORDER INFORMATION
LEAD FREE FINISH
LTC1196-1ACS8#PBF
LTC1196-1BCS8#PBF
LTC1196-2ACS8#PBF
LTC1196-2BCS8#PBF
LTC1198-1ACS8#PBF
LTC1198-1BCS8#PBF
LTC1198-2ACS8#PBF
LTC1198-2BCS8#PBF
TAPE AND REEL
LTC1196-1ACS8#TRPBF
LTC1196-1BCS8#TRPBF
LTC1196-2ACS8#TRPBF
LTC1196-2BCS8#TRPBF
LTC1198-1ACS8#TRPBF
LTC1198-1BCS8#TRPBF
LTC1198-2ACS8#TRPBF
LTC1198-2BCS8#TRPBF
PART MARKING
11961A
11961B
11962A
11962B
11981A
11981B
11982A
11982B
PACKAGE DESCRIPTION
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
119698fb
2
LTC1196/LTC1198
RECOMMENDED OPERATING CONDITIONS
the full operating temperature range, otherwise specifications are at T
A
= 25°C.
SYMBOL
V
CC
f
CLK
t
CYC
t
SMPL
t
hCS
t
suCS
t
hDI
t
suDI
t
WHCLK
t
WLCLK
t
WHCS
t
WLCS
PARAMETER
Supply Voltage
Clock Frequency
l
The
l
denotes the specifications which apply over
LTC1196-1
LTC1198-1
TYP
LTC1196-2
LTC1198-2
TYP
MAX
6
12.0
9.6
CONDITIONS
MIN
2.7
0.01
0.01
12
16
2.5
10
20
MAX
6
14.4
12.0
MIN
2.7
0.01
0.01
12
16
2.5
13
26
26
26
40%
40%
32
11
15
UNITS
V
MHz
MHz
CLK
CLK
CLK
ns
ns
ns
ns
1/f
CLK
1/f
CLK
ns
CLK
CLK
V
CC
= 5V Operation
Total Cycle Time
Analog Input Sampling Time
Hold Time
CS
LOW After Last CLK↑
Setup Time
CS↓
Before First CLK↑
(See Figures 1, 2)
Hold Time D
IN
After CLK↑
Setup Time D
IN
Stable Before CLK↑
CLK HIGH Time
CLK LOW Time
CS
HIGH Time Between Data Transfer Cycles
CS
LOW Time During Data Transfer
LTC1196
LTC1198
LTC1198
LTC1198
f
CLK
= f
CLK(MAX)
f
CLK
= f
CLK(MAX)
LTC1196
LTC1198
20
20
40%
40%
25
11
15
CONVERTER AND MULTIPLEXER CHARACTERISTICS
The
l
denotes the specifications
which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, f
CLK
= f
CLK(MAX)
as defined in Recommended Operating Conditions, unless otherwise noted.
LTC1196-1A/LTC1196-2A
LTC1198-1A/LTC1198-2A
LTC1196-1B/LTC1196-2B
LTC1198-1B/LTC1198-2B
MIN
8
±1/2
±1/2
±1/2
±1/2
–0.05V to V
CC
+ 0.05V
l
PARAMETER
No Missing Codes Resolution
Offset Error
Linearity Error
Full-Scale Error
Total Unadjusted Error (Note 4)
Analog and REF Input Range
Analog Input Leakage Current
CONDITIONS
l
l
MIN
8
TYP
MAX
TYP
MAX
±1
±1
±1
±1
UNITS
Bits
LSB
LSB
LSB
LSB
V
(Note 3)
LTC1196, V
REF
= 5.000V
LTC1198, V
CC
= 5.000V
LTC1196
(Note 5)
l
l
l
±1
±1
μA
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
SYMBOL
V
IH
V
IL
I
IH
I
IL
V
OH
PARAMETER
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
High Level Output Voltage
CONDITIONS
V
CC
= 5.25V
V
CC
= 4.75V
V
IN
= V
CC
V
IN
= 0V
V
CC
= 4.75V, I
O
= 10μA
V
CC
= 4.75V, I
O
= 360μA
The
l
denotes the specifications which
apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, unless otherwise noted.
MIN
l
l
l
l
l
l
TYP
MAX
0.8
2.5
–2.5
UNITS
V
V
μA
μA
V
V
119698fb
2.0
4.5
2.4
4.74
4.71
3
LTC1196/LTC1198
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
SYMBOL
V
OL
I
OZ
I
SOURCE
I
SINK
I
REF
I
CC
PARAMETER
Low Level Output Voltage
Hi-Z Output Leakage
Output Source Current
Output Sink Current
Reference Current, LTC1196
Supply Current
CONDITIONS
V
CC
= 4.75V, I
O
= 1.6mA
CS
= HIGH
V
OUT
= 0V
V
OUT
= V
CC
CS
= V
CC
f
SMPL
= f
SMPL(MAX)
CS
= V
CC
, LTC1198 (Shutdown)
CS
= V
CC
, LTC1196
f
SMPL
= f
SMPL(MAX)
, LTC1196/LTC1198
l
l
l
l
l
l
l
The
l
denotes the specifications which
apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, unless otherwise noted.
MIN
TYP
MAX
0.4
±3
–25
45
0.001
0.5
0.001
7
11
3
1
3
15
20
UNITS
V
μA
mA
mA
μA
mA
μA
mA
mA
DYNAMIC ACCURACY
SYMBOL PARAMETER
S/(N + D) Signal-to-Noise Plus Distortion
THD
IMD
Total Harmonic Distortion
Peak Harmonic or Spurious Noise
Intermodulation Distortion
Full-Power Bandwidth
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, f
CLK
= f
CLK(MAX)
as defined in Recommended Operating Conditions,
unless otherwise noted.
CONDITIONS
500kHz/1MHz Input Signal
500kHz/1MHz Input Signal
500kHz/1MHz Input Signal
f
IN1
= 499.37kHz
f
IN2
= 502.446kHz
MIN
LTC1196
TYP
47/45
49/47
55/48
51
8
1
MAX
MIN
LTC1198
TYP
47/45
49/47
55/48
51
8
1
MAX
UNITS
dB
dB
dB
dB
MHz
MHz
Full Linear Bandwidth [S/(N + D) > 44dB
AC CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, f
CLK
= f
CLK(MAX)
as defined in Recommended Operating Conditions,
unless otherwise noted.
LTC1196-1
LTC1198-1
TYP
LTC1196-2
LTC1198-2
TYP
SYMBOL
t
CONV
PARAMETER
Conversion Time (See Figures 1, 2)
CONDITIONS
l
MIN
MAX
600
710
MIN
MAX
710
900
UNITS
ns
ns
MHz
MHz
MHz
MHz
f
SMPL(MAX)
Maximum Sampling Frequency
LTC1196
LTC1196
LTC1198
LTC1198
C
LOAD
= 20pF
l
l
l
l
1.20
1.00
0.90
0.75
55
70
30
30
45
5
5
30
5
5
15
15
64
73
120
50
1.00
0.80
0.75
0.60
68
88
43
30
55
10
10
30
5
5
20
20
78
94
150
63
t
dDO
t
DIS
t
en
t
hDO
t
f
t
r
C
IN
Delay Time, CLK↑ to D
OUT
Data Valid
Delay Time
CS↑
to D
OUT
Hi-Z
Delay Time, CLK↓ to D
OUT
Enabled
Time Output Data Remains Valid After
CLK↑
D
OUT
Fall Time
D
OUT
Rise
Input Capacitance
ns
ns
ns
ns
ns
ns
ns
pF
pF
pF
119698fb
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
Analog Input On Channel
Analog Input Off Channel
Digital Input
l
l
l
l
4
LTC1196/LTC1198
RECOMMENDED OPERATING CONDITIONS
SYMBOL
f
CLK
t
CYC
t
SMPL
t
hCS
t
suCS
t
hDI
t
suDI
t
WHCLK
t
WLCLK
t
WHCS
t
WLCS
PARAMETER
Clock Frequency
l
The
l
denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 2.7V operation.
LTC1196-1
LTC1198-1
TYP
LTC1196-2
LTC1198-2
TYP
CONDITIONS
MIN
0.01
0.01
12
16
2.5
20
40
MAX
5.4
4.6
MIN
0.01
0.01
12
16
2.5
40
78
78
78
40%
40%
96
11
15
MAX
4
3
UNITS
MHz
MHz
CLK
CLK
CLK
ns
ns
ns
ns
1/f
CLK
1/f
CLK
ns
CLK
CLK
Total Cycle Time
Analog Input Sampling Time
Hold Time
CS
LOW After Last CLK↑
Setup Time
CS↓
Before First CLK↑
(See Figures 1, 2)
Hold Time D
IN
After CLK↑
Setup Time D
IN
Stable Before CLK↑
CLK HIGH Time
CLK LOW Time
CS
HIGH Time Between Data Transfer
Cycles
CS
LOW Time During Data Transfer
LTC1196
LTC1198
LTC1198
LTC1198
f
CLK
= f
CLK(MAX)
f
CLK
= f
CLK(MAX)
40
40
40%
40%
50
LTC1196
LTC1198
11
15
CONVERTER AND MULTIPLEXER CHARACTERISTICS
The
l
denotes the specifications
which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 2.7V, V
REF
= 2.5V,
f
CLK
= f
CLK(MAX)
as defined in Recommended Operating Conditions, unless otherwise noted.
LTC1196-1A/LTC1196-2A
LTC1198-1A/LTC1198-2A
PARAMETER
No Missing Codes Resolution
Offset Error
Linearity Error
Full-Scale Error
Total Unadjusted Error (Note 4)
Analog and REF Input Range
Analog Input Leakage Current
LTC1196, V
REF
= 2.5.000V
LTC1198, V
CC
= 2.700V
LTC1196
(Note 5)
l
LTC1196-1B/LTC1196-2B
LTC1198-1B/LTC1198-2B
MIN
8
TYP
MAX
±1
±1
±1
±1
UNITS
Bits
LSB
LSB
LSB
LSB
V
±1
μA
CONDITIONS
l
l
MIN
8
TYP
MAX
±1/2
±1/2
±1/2
±1/2
(Note 3)
l
l
l
–0.05V to V
CC
+ 0.05V
±1
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
SYMBOL
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
I
OZ
PARAMETER
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
High Level Output Voltage
Low Level Output Voltage
Hi-Z Output Leakage
CONDITIONS
V
CC
= 3.6V
V
CC
= 2.7V
V
IN
= V
CC
V
IN
= 0V
V
CC
= 2.7V, I
O
= 10μA
V
CC
= 2.7V, I
O
= 360μA
V
CC
= 2.7V, I
O
= 400μA
CS
= HIGH
The
l
denotes the specifications which apply
over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 2.7V, V
REF
= 2.5V, unless otherwise noted.
MIN
l
l
l
l
l
l
l
l
TYP
MAX
0.45
2.5
–2.5
UNITS
V
V
μA
μA
V
V
1.9
2.3
2.1
2.60
2.45
0.3
±3
V
μA
119698fb
5
More (Only the first 5 pages are displayed. Please Download Datasheet to view the full content.) >

Recommended Resources

Battery voltage detection circuit diagram

Small 3.3V backup power supply MAX679 circuit diagram

Mining winding hoist anti-loosening rope protection circuit

555 square wave and sawtooth wave generator circuit

Multi-channel centralized control adjustable integrated stabilized power supply

Looking for a portable low-power electronic scale design based on MSP430F149
Weighing range: 0-500g, precision 1g, requires the use of LCD1602 display, battery power supply, mainly to achieve low power consumption design of the whole system, functions: weight display function,...
秋枫叶落时 Mobile and portable
Question about the bus?
For example, the conversion protocol from wishbone bus to AMBA bus written in Verilog; AMBA's operation program for NAND flash controller...
eeleader FPGA/CPLD
AlphaGo practiced StarCraft for a year: it can't beat simple NPCs in single combat
[color=#333333][backcolor=rgb(245, 248, 253)][font="][size=15px]The victory of AlphaGo in the Go game officially brought artificial intelligence into the public eye. DeepMind (an artificial intelligen...
hightemplar Talking
Detailed tutorial of microcontroller e-book
The e-book tutorial our teacher sent today is very detailed. Many commonly used modules of microcontrollers are included. Please allow me to make some money. Please forgive me....
江汉大学南瓜 51mcu
Please give me some information about MFC Bluetooth programming!
I want to use MFC to write a PC Bluetooth software with the functions of searching, connecting, encrypting and transferring files. I hope the experts can give me some information about MFC Bluetooth p...
1235421 Embedded System
keyboard scancodetovirtualkey
scancodetovirtualkey, I looked at the source code and it is calling *puiVk = MapVirtualKey(*puiSc, MAP_SC_TO_VK); but I can't find this function. Does anyone know, please help me solve it.```...
为科学执着 Embedded System
Shortcut:   A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components

  1. RWS3 500R J B
  2. MRCN103N751J390KTB
  3. MJ2P-E03GBW-L
  4. 77311R826T14LF
  5. KAC-A25-R/Q
  6. SIT9025AAU72R18NM1.000000
  7. PRA135C7-5K62BPBT31
  8. ABM8-15.999MHZ-10-2H-T
  9. GS1010FL-AU_A1_10001
  10. A2012WVA-F-9P
  11. ST0805G620KP100.25W
  12. 201007J0275T4E

Popular Articles

  1. LPC17XX SSP0/1 interface
  2. Continental develops virtual travel assistant eTravel.Companion to make driving more comfortable
  3. Causes of cable fault tester failure
  4. Illustration of the evolutionary characteristics of the "new species" of autonomous driving and connected cars
  5. Semiconductor M&A: Why are all-stock transactions not mainstream?
  6. Domestic polarizer supplier Weida Optoelectronics plans to IPO on the A-share market and start listing guidance
  7. Exynos4412 Uboot transplantation (VI)—— Related knowledge supplement
  8. Analysis of s3c2410 and dma related functions in linux-2.6.24.4
  9. How to Solve Echo Failure of CIQ-100
  10. Analysis of performance indicators and characteristics of MCA3000 series frequency meter

Technical ResourceMore

  1. AG6202 Chinese Manual | AG6206 Chinese Specification
  2. Electroacoustic Technology
  3. MATLAB Case 24 Fuzzy Neural Network Prediction Algorithm-Jialing River Water Quality Evaluation.rar
  4. MATLAB Case 21 LVQ Neural Network Classification - Breast Tumor Diagnosis.rar
  5. MATLAB Case 8 GRNN Data Prediction - Freight Volume Prediction Based on Generalized Regression Neural Network.rar
  6. C Modern Programming - Example Code
  7. Discussion on new applications of magnetic materials and devices_Microwave ferrite components_Li Shigen
  8. Cadence SPB16.2 Getting Started Tutorial
  9. Basic knowledge of varistor
  10. sx1278 Chinese information

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

About Us Customer Service Contact Information Datasheet Sitemap LatestNews
Index Files: 593  1864  2468  2882  2923  12  38  50  59  29 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号