Datasheet

AD7723
Rev. C | Page 4 of 32
B Version
Parameter Test Conditions/Comments Min Typ Max Unit
Low-Pass Decimate by 16
0 kHz to f
CLKIN
/41.75 ±0.001 dB
f
CLKIN
/33.45 −3 dB
f
CLKIN
/32 −6 dB
f
CLKIN
/25.95 to f
CLKIN
/2 −90 dB
Group Delay 541/2 f
CLKIN
Settling Time 541/f
CLKIN
Band-Pass Decimate by 32
f
CLKIN
/51.90 to f
CLKIN
/41.75 ±0.001 dB
f
CLKIN
/62.95, f
CLKIN
/33.34 −3 dB
f
CLKIN
/64, f
CLKIN
/32 −6 dB
0 kHz to f
CLKIN
/83.5, f
CLKIN
/25.95 to f
CLKIN
/2 −90 dB
Group Delay 1293/2 f
CLKIN
Settling Time 1293/f
CLKIN
Output Data Rate, F
O
Decimate by 32 f
CLKIN
/32
Decimate by 166 f
CLKIN
/16
ANALOG INPUTS
Full-Scale Input Span VIN(+) − VIN(−)
Bipolar Mode ±4/5 × V
REF2
V
Unipolar Mode 0 8/5 × V
REF2
V
Absolute Input Voltage VIN(+) − VIN(−) AGND AV
DD
V
Input Sampling Capacitance 2 pF
Input Sampling Rage, f
CLKIN
19.2 MHz
CLOCK
CLKIN Duty Ratio 45 55 %
REFERENCE
REF1 Output Resistance 3 kΩ
Using Internal Reference
REF2 Output Voltage 2.39 2.54 2.69 V
REF2 Output Voltage Drift 60 ppm/°C
Using External Reference
REF2 Input Impedance REF1 = AGND 4 kΩ
REF2 External Voltage Range 1.2 2.5 3.15 V
STATIC PERFORMANCE
Resolution 16 Bits
Differential Nonlinearity Guaranteed monotonic ±0.5 ±1 LSB
Integral Nonlinearity ±2 LSB
DC CMRR 80 dB
Offset Error ±20 mV
Gain Error
5
±0.5 % FSR
LOGIC INPUTS (EXCLUDING CLKIN)
V
INH
, Input High Voltage 2.0 V
V
INL
, Input High Voltage 0.8 V
CLOCK INPUT (CLKIN)
V
INH
, Input High Voltage 3.8 V
V
INL
, Input High Voltage 0.4 V
ALL LOGIC INPUTS
I
IN
, Input Current V
IN
= 0 V to DV
DD
±10 µA
C
IN
, Input Capacitance 10 pF