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
Differential Nonlinearity
Offset Error
Gain Error
Noise
Power Supply Rejection
SWITCH DRIVERS
On Resistance
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
Single Conversion Method
Accuracy
Differential Method
Single Conversion Method
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
12
11
±2
±6
±4
70
70
AD7873B
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
AD [ ANALOG DEVICES ]
