Data Sheet

AD9635

Rev. B | Page 3 of 36

SPECIFICATIONS

DC SPECIFICATIONS

AVDD = 1.8 V, DRVDD = 1.8 V, 2 V p-p differential input, 1.0 V internal reference, AIN = −1.0 dBFS, unless otherwise noted.

Table 1.

Temp

AD9635-80

AD9635-125

Min

Typ

Max

Min

Typ

Max

Unit

RESOLUTION

12

12

Bits

ACCURACY

No Missing Codes

Full

Guaranteed

Guaranteed

Offset Error

Full

−0.6

−0.3

+0.1

−0.6

−0.3

+0.2

% FSR

Offset Matching

Full

−0.2

+0.1

+0.4

−0.2

+0.1

+0.4

% FSR

Gain Error

Full

−4.0

−0.8

+2.1

−4.7

−0.4

+4.8

% FSR

Gain Matching

Full

0.5

2.4

0.6

2.9

% FSR

Differential Nonlinearity (DNL)

Full

−0.2

+0.4

−0.3

+0.6

LSB

25°C

−0.1 to +0.2

−0.1 to +0.2

LSB

Integral Nonlinearity (INL)

Full

−0.7

+0.7

−1.1

+1.1

LSB

25°C

±0.3

±0.4

LSB

TEMPERATURE DRIFT

Offset Error

Full

2.9

3.7

ppm/°C

INTERNAL VOLTAGE REFERENCE

Output Voltage (1 V Mode)

Full

0.98

1.0

1.02

0.98

1.0

1.02

V

25°C

2

2

mV

Input Resistance

25°C

7.5

7.5

kΩ

INPUT-REFERRED NOISE

25°C

0.41

0.42

LSB rms

ANALOG INPUTS

Full

2

2

V p-p

Common-Mode Voltage

Full

0.9

0.9

V

Common-Mode Range

25°C

0.5

1.3

0.5

1.3

V

Differential Input Resistance

25°C

5.2

5.2

kΩ

Differential Input Capacitance

25°C

3.5

3.5

pF

POWER SUPPLY

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

Full

57

61

75

81

mA

Full

45

47

52

55

mA

25°C

36

43

mA

TOTAL POWER CONSUMPTION

DC Input

Full

174

186

215

232

mW

Sine Wave Input (Two Channels; Includes Output Drivers

in ANSI-644 Mode)

Full

184

194

229

245

mW

Sine Wave Input (Two Channels; Includes Output Drivers

in Reduced Range Mode)

25°C

167

212

mW

Power-Down

25°C

2

2

mW

Full

91

99

114

124

mW

1

See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for definitions and for details on how these tests were completed.

2

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

3

Can be controlled via the SPI.