Datasheet

AD6644
Rev. D | Page 3 of 24
SPECIFICATIONS
DC SPECIFICATIONS
AV
CC
= 5 V, DV
CC
= 3.3 V; T
MIN
= –25°C, T
MAX
= +85°C, unless otherwise noted.
Table 1.
AD6644AST-40 AD6644AST-65
Parameter Temp Test Level
1
Min Typ Max Min Typ Max
Unit
RESOLUTION 14 14 Bits
ACCURACY
No Missing Codes Full II Guaranteed Guaranteed
Offset Error Full II −10 +3 +10 −10 +3 +10 mV
Gain Error Full II −10 −6 +10 −10 –6 +10 % FS
Differential Nonlinearity (DNL) Full II −1.0 ±0.25 +1.5 −1.0 ±0.25 +1.5 LSB
Integral Nonlinearity (INL) Full V ±0.50 ±0.50 LSB
TEMPERATURE DRIFT
Offset Error Full V 10 10 ppm/°C
Gain Error Full V 95 95 ppm/°C
POWER SUPPLY REJECTION RATIO (PSRR) Full V ±1.0 ±1.0 mV/V
REFERENCE OUT (V
REF
) Full V 2.4 2.4 V
ANALOG INPUTS (AIN,
AIN
)
Differential Input Voltage Span Full V 2.2 2.2 V p-p
Differential Input Resistance Full V 1 1 kΩ
Differential Input Capacitance 25°C V 1.5 1.5 pF
POWER SUPPLY
Supply Voltage
AV
CC
2
Full II 4.85 5.0 5.25 4.85 5.0 5.25 V
DV
CC
Full II 3.0 3.3 3.6 3.0 3.3 3.6 V
Supply Current
IA
VCC
(AV
CC
= 5.0 V) Full II 245 276 245 276 mA
ID
VCC
(DV
CC
= 3.3 V) Full II 30 36 30 36 mA
Rise Time
3
AV
CC
Full IV 15 ms
POWER CONSUMPTION Full II 1.3 1.5 1.3 1.5 W
1
See the Explanation of Test Levels section.
2
AV
CC
can vary from 4.85 V to 5.25 V. However, rated ac (harmonics) performance is valid only over the range AV
CC
= 5.0 V to 5.25 V.
3
Specified for dc supplies with linear rise time characteristics.