Addition of 16-Lead Lead Frame Chip Scale Package .. Universal
Edits to Features.................................................................................1
Edits to General Description ...........................................................1
Addition of LFCSP Pin Configuration ...........................................4
Edit to Absolute Maximum Ratings................................................4
Addition to Ordering Guide ............................................................4
Addition of CP-16 Outline Dimensions .................................... 19
2/01—Rev. 0 to Rev A
Edits to Notes in the Ordering Guide
Rev. F | Page 2 of 28
Data Sheet
SPECIFICATIONS
V
CC
= 2.7 V to 3.6 V, V
REF
= 2.5 V internal or external, f
DCLK
= 2 MHz; T
A
= −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
DC ACCURACY
Resolution
No Missing Codes
Integral Nonlinearity
2
Differential Nonlinearity
2
Offset Error
2
Gain Error
2
Noise
Power Supply Rejection
SWITCH DRIVERS
On Resistance
2
Y+, X+
Y–, X–
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
REFERENCE INPUT/OUTPUT
Internal Reference Voltage
Internal Reference Tempco
V
REF
Input Voltage Range
DC Leakage Current
V
REF
Input Impedance
TEMPERATURE MEASUREMENT
Temperature Range
Resolution
Differential Method
3
Single Conversion Method
4
Accuracy
Differential Method
3
Single Conversion Method
4
BATTERY MONITOR
Input Voltage Range
Input Impedance
Accuracy
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN 5
AD7873A
1
12
11
±2
±6
±4
70
70
AD7873B
1
12
12
±1
–0.9/+1.5
±6
±4
70
70
Unit
Bits
Bits min
LSB max
LSB max
LSB max
LSB max
µV rms typ
dB typ
Test Conditions/Comments
AD7873
+V
CC
= 2.7 V
External reference
5
6
0 to V
REF
±0.1
37
2.45/2.55
±15
1/V
CC
±1
1
5
6
0 to V
REF
±0.1
37
2.45/2.55
±15
1/V
CC
±1
1
Ω typ
Ω typ
V
µA typ
pF typ
V min/max
ppm/°C typ
V min/max
µA max
GΩ typ
CS = GND or +V
CC
; typically 260 Ω when the
on-board reference is enabled
–40/+85
1.6
0.3
±2
±2
0/6
10
±2.5
±3
2.4
0.4
±1
10
–40/+85
1.6
0.3
±2
±2
0/6
10
±2
±3
2.4
0.4
±1
10
°C min/max
°C typ
°C typ
°C typ
°C typ
V min/max
kΩ typ
% max
% max
V min
V max
µA max
pF max
Sampling; 1 GΩ when battery monitor is off
External reference
Internal reference
Typically 10 nA, V
IN
= 0 V or +V
CC
Rev. F | Page 3 of 28
AD7873
Parameter
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
PENIRQ Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
5
Output Coding
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
POWER REQUIREMENTS
+V
CC
(Specified Performance)
I
CC 6
Normal Mode (f
SAMPLE
= 125 kSPS)
Normal Mode (f
SAMPLE
= 12.5 kSPS)
Normal Mode (Static)
Shutdown Mode (Static)
Power Dissipation
6
Normal Mode (f
SAMPLE
= 125 kSPS)
Shutdown
1
2
Data Sheet
AD7873A
1
V
CC
– 0.2
0.4
0.4
±10
10
AD7873B
1
Unit
Test Conditions/Comments
I
SOURCE
= 250 µA; V
CC
= 2.2 V to 5.25 V
I
SINK
= 250 µA
100 kΩ pull-up; I
SINK
= 250 µA
V
CC
– 0.2
V min
0.4
V max
0.4
V max
±10
µA max
10
pF max
Straight (Natural) Binary
12
3
125
2.7/3.6
380
670
170
150
580
1
1.368
2.412
3.6
DCLK cycles max
DCLK cycles min
kSPS max
V min/max
µA max
µA typ
µA typ
µA typ
µA typ
µA max
mW max
mW typ
µW max
Functional from 2.2 V to 5.25 V
Digital I/Ps = 0 V or V
CC
Internal reference off, V
CC
= 3.6 V, 240 µA typ
Internal reference on, V
CC
= 3.6 V
Internal reference off, V
CC
= 2.7 V, f
DCLK
= 200 kHz
Internal reference off, V
CC
= 3.6 V
Internal reference on, V
CC
= 3.6 V
200 nA typ
Internal reference off, V
CC
= 3.6 V
Internal reference on, V
CC
= 3.6 V
V
CC
= 3.6 V
12
3
125
2.7/3.6
380
670
170
150
580
1
1.368
2.412
3.6
Temperature range as follows: A, B Versions: –40°C to +85°C.
See the Terminology section.
3
Difference between TEMP0 and TEMP1 measurement. No calibration necessary.
4
Temperature drift is –2.1 mV/°C.
5
Sample tested @ 25°C to ensure compliance.
6
See the Power vs. Throughput Rate section.
Rev. F | Page 4 of 28
Data Sheet
TIMING SPECIFICATIONS
T
A
= T
MIN
to T
MAX
, unless otherwise noted; V
CC
= 2.7 V to 5.25 V, V
REF
= 2.5 V.
Table 2. Timing Specifications
1
Parameter
f
DCLK 2
t
ACQ
t
1
t
2
t
3 3
t
4
t
5
t
6
t
7
t
8
t
93
t
10
t
11
t
12 4
1
2
AD7873
Limit at T
MIN
, T
MAX
10
2
1.5
10
60
60
200
200
60
10
10
200
0
100
100
Unit
kHz min
MHz max
µs min
ns min
ns max
ns max
ns min
ns min
ns max
ns min
ns min
ns max
ns min
ns max
ns max
Description
Acquisition time
CS falling edge to first DCLK rising edge
CS falling edge to busy three-state disabled
CS falling edge to DOUT three-state disabled
DCLK high pulse width
DCLK low pulse width
DCLK falling edge to BUSY rising edge
Data setup time prior to DCLK rising edge
Data valid to DCLK hold time
Data access time after DCLK falling edge
CS rising edge to DCLK ignored
CS rising edge to BUSY high impedance
CS rising edge to DOUT high impedance
Sample tested at 25°C to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of V
CC
) and timed from a voltage level of 1.6 V.
Mark/space ratio for the DCLK input is 40/60 to 60/40.
3
Measured with the load circuit of Figure 2 and defined as the time required for the output to cross 0.4 V or 2.0 V.
4
t
12
is derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit of Figure 2. The measured number is then extrapolated
back to remove the effects of charging or discharging the 50 pF capacitor. This means that the time, t
12
, quoted in the timing characteristics is the true bus relinquish
time of the part and is independent of the bus loading.
200µA
I
OL
TO OUTPUT
PIN
1.6V
C
L
50pF
200µA
I
OH
02164-002
Figure 2. Load Circuit for Digital Output Timing Specifications
[color=#000][size=4]Design and implementation of switching power supply based on DSP2407[/size][/color] [color=#000][size=4] [/size][/color] [size=4][/size] [size=4] [/size] [size=4][/size]...
[b][size=4][color=darkred]Let’s take a look at the homepage first,,,[size=6]Analysis of the ability of aluminum electrolytic capacitors to withstand ripple current[hide] [/hide][/size] [/color][/size]...
Circuit Function and AdvantagesThe circuit is a 4 mA to 20 mA current loop transmitter for communication between process control systems and their actuators. In addition to being cost-effective, this ...
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
introduction
For the voltage regulator modules (VRMs) that power the latest computer central processing units (CPUs), power supply designers have historically used multiphase interleaved b...[Details]
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
5. Identifiers and keywords of C language
A complete PIC microcontroller C language program usually consists of six parts: include files (i.e. header files 1, variable definitions, variable de...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
It is well known to automotive suppliers that automakers are demanding more from their supply base. For connector suppliers, this means stricter requirements for product performance, stability and ...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
Abstract: In recent years, with the establishment and grid-connected power generation of a large number of solar photovoltaic power stations at home and abroad, photovoltaic grid-connected inverter...[Details]
The era of mobile access to the Internet has arrived, and it will rapidly change the business and infrastructure needs of mobile operators under a whole new trend of requirements. We need 4G LTE to...[Details]
Preface
In recent years, white light LEDs have gradually replaced incandescent bulbs and fluorescent lamps because they have unparalleled advantages over traditional light sources in terms...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
0 Introduction
With the rapid development of social economy and science and technology, electric locomotives, subways and electric vehicles will be widely used. The power conversion and cont...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
DSP and ARM Processors
京公网安备 11010802033920号
EEWORLD
