Datasheet

AD6645
Rev. D | Page 3 of 24
SPECIFICATIONS
DC SPECIFICATIONS
AV
CC
= 5 V, DV
CC
= 3.3 V; T
MIN
and T
MAX
at rated speed grade, unless otherwise noted.
Table 1.
AD6645ASQ-80/AD6645ASV-80 AD6645ASQ-105/AD6645ASV-105
Parameter Temp Test Level Min Typ Max Min Typ Max Unit
RESOLUTION 14 14 Bits
ACCURACY
No Missing Codes Full II Guaranteed Guaranteed
Offset Error Full II −10 +1.2 +10 −10 +1.2 +10 mV
Gain Error Full II −10 0 +10 −10 0 +10 % FS
Differential Nonlinearity (DNL) Full II −1.0 ±0.25 +1.5 −1.0 ±0.5 +1.5 LSB
Integral Nonlinearity (INL) Full V ±0.5 ±1.5 LSB
TEMPERATURE DRIFT
Offset Error Full V 1.5 1.5 ppm/°C
Gain Error Full V 48 48 ppm/°C
POWER SUPPLY REJECTION RATIO
(PSRR)
25°C V ±1.0 ±1.0 mV/V
REFERENCE OUT (VREF)
1
Full V 2.4 2.4 V
ANALOG INPUTS (AIN, AIN)
Differential Input Voltage Range Full V 2.2 2.2 V p-p
Differential Input Resistance Full V 1 1 kΩ
Differential Input Capacitance 25°C 1.5 1.5 pF
POWER SUPPLY
Supply Voltages
AV
CC
Full II 4.75 5.0 5.25 4.75 5.0 5.25 V
DV
CC
Full II 3.0 3.3 3.6 3.0 3.3 3.6 V
Supply Current
IAV
CC
(AV
CC
= 5.0 V) Full II 275 320 275 320 mA
IDV
CC
(DV
CC
= 3.3 V) Full II 32 45 32 45 mA
Rise Time
2
AV
CC
Full IV 250 5.0 250 ms
POWER CONSUMPTION Full II 1.5 1.75 1.5 1.75 W
1
VREF is provided for setting the common-mode offset of a differential amplifier, such as the AD8138, when a dc-coupled analog input is required. VREF should be
buffered if used to drive additional circuit functions.
2
Specified for dc supplies with linear rise time characteristics.