Datasheet

AD9231
Rev. A | Page 4 of 36
SPECIFICATIONS
DC SPECIFICATIONS
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS,
DCS disabled, unless otherwise noted.
Table 1.
AD9231-20/AD9231-40 AD9231-65 AD9231-80
Parameter Temp
Min Typ Max Min Typ Max Min Typ Max
Unit
RESOLUTION Full 12 12 12 Bits
ACCURACY
No Missing Codes Full Guaranteed Guaranteed Guaranteed
Offset Error Full 0.05 ±0.5 0.05 ±0.5 0.05 ±0.5 % FSR
Gain Error
1
Full −1.5 −1.5 −1.5 % FSR
Differential Nonlinearity (DNL)
2
Full ±0.30 ±0.40 ±0.40 LSB
25°C ±0.12 ±0.17 ±0.2 LSB
Integral Nonlinearity (INL)
2
Full ±0.45 ±0.50 ±0.65 LSB
25°C ±0.15 ±0.17 ±0.2 LSB
MATCHING CHARACTERISTICS
Offset Error 25°C ±0.0 ±0.70 ±0.0 ±0.60 ±0.0 ±0.60 % FSR
Gain Error
1
25°C 0.3 0.3 0.4 % FSR
TEMPERATURE DRIFT
Offset Error Full ±2 ±2 ±2 ppm/°C
INTERNAL VOLTAGE REFERENCE
Output Voltage (1 V Mode) Full 0.981 0.993 1.005 0.981 0.993 1.005 0.981 0.993 1.005 V
Load Regulation Error at 1.0 mA Full 2 2 2 mV
INPUT-REFERRED NOISE
VREF = 1.0 V 25°C 0.25 0.25 0.25 LSB rms
ANALOG INPUT
Input Span, VREF = 1.0 V Full 2 2 2 V p-p
Input Capacitance
3
Full 6 6 6 pF
Input Common-Mode Voltage Full 0.9 0.9 0.9 V
Input Common-Mode Range Full 0.5 1.3 0.5 1.3 0.5 1.3 V
REFERENCE INPUT RESISTANCE Full 7.5 7.5 7.5 kΩ
POWER SUPPLIES
Supply Voltage
AVDD Full 1.7 1.8 1.9 1.7 1.8 1.9 1.7 1.8 1.9 V
DRVDD Full 1.7 3.6 1.7 3.6 1.7 3.6 V
Supply Current
IAVDD
2
Full 35.7/49.0 37.7/52.2 69 72.4 80.0 83.4 mA
IDRVDD
2
(1.8 V) Full 3.0/5.1 7.4 9.1 mA
IDRVDD
2
(3.3 V) Full 5.9/10.1 14.9 18.3 mA
POWER CONSUMPTION
DC Input Full 63.5/87.1 122.9 141.8 mW
Sine Wave Input
2
(DRVDD = 1.8 V) Full 69.7/97.3 73.3/103.0 138.0 143.8 160.4 166.5 mW
Sine Wave Input
2
(DRVDD = 3.3 V) Full 83.7/121.5 173.4 204 mW
Standby Power
4
Full 37/37 37 37 mW
Power-Down Power Full 2.2 2.2 2.2 mW
1
Measured with 1.0 V external reference.
2
Measured with a 10 MHz input frequency at rated sample rate, full-scale sine wave, with approximately 5 pF loading on each output bit.
3
Input capacitance refers to the effective capacitance between one differential input pin and AGND.
4
Standby power is measured with a dc input and the CLK active.