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LTC1196-1BC

Description
8-Bit, SO-8, 1MSPS ADCs with Auto-Shutdown Options
File Size348KB,28 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All

LTC1196-1BC Overview

8-Bit, SO-8, 1MSPS ADCs with Auto-Shutdown Options

LTC1196/LTC1198
8-Bit, SO-8, 1MSPS ADCs with
Auto-Shutdown Options
FEATURES
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
s
s
High Sampling Rates: 1MHz (LTC1196)
750kHz (LTC1198)
Low Cost
SO-8 Plastic Package
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)
The LTC1196/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 perform-
ing conversions. These 8-bit switched-capacitor succes-
sive 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 inputs
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.
APPLICATI
s
s
s
s
S
High Speed Data Acquisition
Disk Drives
Portable or Compact Instrumentation
Low Power or Battery-Operated Systems
TYPICAL APPLICATI
Single 5V Supply, 1MSPS, 8-Bit Sampling ADC
1µF
5V
Effective Bits and S/(N + D) vs Input Frequency
8
EFFECTIVE NUMBER OF BITS (ENOBs)
7
6
5
4
3
2
1
0
1k
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)
1
2
ANALOG INPUT
0V TO 5V RANGE
CS
+IN
V
CC
8
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP,
OR SHIFT REGISTERS
7
LTC1196 CLK
(SO-8)
3
6
–IN
D
OUT
4
5
GND
V
REF
1196/98 TA01
T
A
= 25°C
10k
100k
INPUT FREQUENCY (Hz)
1M
1196/98 G24
U
50
44
S/(N + D) (dB)
UO
UO
1
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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
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