AD9644

Data Sheet

Rev. C | Page 4 of 44

SPECIFICATIONS

ADC DC SPECIFICATIONS

AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, 1.75 V p-p differential input, VIN = −1.0 dBFS differential input, DCS enabled,

unless otherwise noted.

Table 1.

AD9644-80

AD9644-155

Parameter

Temperature

Min

Typ

Max

Min

Typ

Max

Unit

RESOLUTION

Full

14

14

Bits

ACCURACY

No Missing Codes

Full

Guaranteed

Guaranteed

Offset Error

Full

±2

±10

±2.2

±11

mV

Gain Error

Full

−7

−2.5

+1

−6

−1.5

+4

% FSR

Differential Nonlinearity (DNL)1

Full

±0.55

±0.55

LSB

25°C

±0.3

±0.3

LSB

Integral Nonlinearity (INL)1

Full

±1.1

±1.25

LSB

25°C

±0.5

±0.55

LSB

MATCHING CHARACTERISTIC

Offset Error

Full

−7

+1.5

+10

−6

+1.5

+9

mV

Gain Error

Full

−1.5

+0.6

+2.75

−3.1

+0.75

+5

% FSR

TEMPERATURE DRIFT

Offset Error

Full

±2

±2

ppm/°C

Gain Error

Full

±35

±144

ppm/°C

INPUT REFERRED NOISE

25°C

0.7

0.7

LSB rms

ANALOG INPUT

Input Span

Full

1.383

1.75

2.087

1.383

1.75

2.087

V p-p

Input Capacitance2

Full

7

5

pF

Input Resistance

Full

20

20

kΩ

VCM OUTPUT LEVEL

Full

0.88

0.9

0.92

0.87

0.9

0.93

V

POWER SUPPLIES

Supply Voltage

AVDD

Full

1.7

1.8

1.9

1.7

1.8

1.9

V

DRVDD

Full

1.7

1.8

1.9

1.7

1.8

1.9

V

Supply Current

IAVDD1

Full

175

190

226

242

mA

IDRVDD1

Full

60

67

89

97

mA

POWER CONSUMPTION

Sine Wave Input1

Full

423

460

567

610

mW

Standby Power3

Full

85

168

mW

Power-Down Power

Full

15

27

18

27

mW

1

Measured with a low input frequency, full-scale sine wave.

2

Input capacitance refers to the effective capacitance between one differential input pin and AGND.

3

Standby power is measured with a dc input and with the CLK pins inactive (set to AVDD or AGND).