Data Sheet

AD9642

SPECIFICATIONS

ADC DC SPECIFICATIONS

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

unless otherwise noted.

Table 1.

Parameter

Temperature

AD9642-170

AD9642-210

AD9642-250

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Unit

RESOLUTION

Full

14

14

14

Bits

ACCURACY

No Missing Codes

Full

Guaranteed

Guaranteed

Guaranteed

Offset Error

Full

±11

±11

±10

mV

Gain Error

Full

+2/−11

+3.5/−8

+3/−7

%FSR

Differential Nonlinearity (DNL)

Full

±0.5

±0.55

±0.6

LSB

25°C

±0.3

±0.3

±0.32

LSB

Full

±1.3

±2.0

±2.5

LSB

25°C

±0.6

±0.75

±1.0

LSB

TEMPERATURE DRIFT

Offset Error

Full

±7

±7

±7

ppm/°C

Gain Error

Full

±52

±105

±75

ppm/°C

INPUT REFERRED NOISE

VREF = 1.0 V

25°C

0.83

0.85

0.85

LSB

rms

ANALOG INPUT

Input Span

Full

1.75

1.75

1.75

V p-p

Full

2.5

2.5

2.5

pF

Full

20

20

20

kΩ

Input Common-Mode Voltage

Full

0.9

0.9

0.9

V

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

1.8

1.9

1.7

1.8

1.9

1.7

1.8

1.9

V

Supply Current

Full

123

136

129

139

136

146

mA

Full

50

64

56

67

64

69

mA

POWER CONSUMPTION

Sine Wave Input (DRVDD = 1.8 V)

Full

311

360

333

371

360

387

mW

Full

50

50

50

mW

Power-Down Power

Full

5

5

5

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 its complement.

3

Input resistance refers to the effective resistance between one differential input pin and its complement.

4

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

Rev. B | Page 3 of 28