AD7843ARU(Rev0) 查看數據表（PDF） - Analog Devices
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AD7843ARU Datasheet PDF : 16 Pages
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AD7843–SPECIFICATIONS (VCC = 2.7 V to 3.6 V, VREF = 2.5 V, fSCLK = 2 MHz unless otherwise noted; TA =
–40؇C to +85؇C, unless otherwise noted.)
Parameter
AD7843A1
Unit
Test Conditions/Comments
DC ACCURACY
Resolution
No Missing Codes
Integral Nonlinearity2
Offset Error2
Offset Error Match3
Gain Error2
Gain Error Match3
Power Supply Rejection
12
Bits
11
Bits min
±2
LSB max
±6
LSB max
VCC = 2.7 V
1
LSB max
0.1
LSB typ
±4
LSB max
1
LSB max
0.1
LSB typ
70
dB typ
SWITCH DRIVERS
On-Resistance2
Y+, X+
Y–, X–
5
Ω typ
6
Ω typ
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
0 to VREF
± 0.1
37
Volts
µA typ
pF typ
REFERENCE INPUT
VREF Input Voltage Range
DC Leakage Current
VREF Input Impedance
VREF Input Current3
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN4
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
PENIRQ Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance4
Output Coding
1.0/+VCC
±1
5
20
1
1
V min/max
µA max
GΩ typ
µA max
µA typ
µA max
2.4
V min
0.4
V max
±1
µA max
10
pF max
VCC – 0.2
0.4
V min
V max
0.4
V max
± 10
µA max
10
pF max
Straight (Natural) Binary
CS = GND or +VCC
8 µA typ
fSAMPLE = 12.5 kHz
CS = +VCC; 0.001 µA typ
Typically 10 nA, VIN = 0 V or +VCC
ISOURCE = 250 µA; VCC = 2.2 V to 5.25 V
ISINK = 250 µA
ISINK = 250 µA; 100 kΩ Pull-Up
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
Throughput Rate
12
DCLK Cycles max
3
DCLK Cycles min
125
kSPS max
POWER REQUIREMENTS
VCC (Specified Performance)
ICC5
Normal Mode (fSAMPLE = 125 kSPS)
Normal Mode (fSAMPLE = 12.5 kSPS)
Normal Mode (Static)
Shutdown Mode (Static)
Power Dissipation5
Normal Mode (fSAMPLE = 125 kSPS)
Shutdown
2.7/3.6
380
170
150
1
1.368
3.6
NOTES
1Temperature range as follows: A Version: –40°C to +85°C.
2See Terminology.
3Guaranteed by design.
4Sample tested @ 25°C to ensure compliance.
5See Power vs. Throughput Rate section.
Specifications subject to change without notice.
V min/max
µA max
µA typ
µA typ
µA max
mW max
µW max
Functional from 2.2 V to 5.25 V
Digital I/Ps = 0 V or VCC
VCC = 3.6 V, 240 µA typ
VCC = 2.7 V, fDCLK = 2 00 kHz
VCC = 3.6 V
VCC = 3.6 V
VCC = 3.6 V
–2–
REV. 0
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