AD6643

Rev. 0 | Page 4 of 36

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, default SPI,

unless otherwise noted.

Table 1.

Parameter

Temperature

Min

Typ

Max

Unit

RESOLUTION

Full

11

Bits

ACCURACY

No Missing Codes

Full

Guaranteed

Offset Error

Full

±10

mV

Gain Error

Full

+2/−6

% FSR

Differential Nonlinearity (DNL)1

Full

±0.1

±0.25

LSB

Integral Nonlinearity (INL)1

Full

±0.2

±0.25

LSB

MATCHING CHARACTERISTIC

Offset Error

25°C

±13

mV

Gain Error

25°C

−2/+3.5

% FSR

TEMPERATURE DRIFT

Offset Error

Full

±15

ppm/°C

Gain Error

Full

±50

ppm/°C

INPUT REFERRED NOISE

VREF = 1.0 V

25°C

0.614

LSB rms

ANALOG INPUT

Input Span

Full

1.75

V p-p

Input Capacitance2

Full

2.5

pF

Input Resistance3

Full

20

kΩ

Input Common-Mode Voltage

Full

0.9

V

POWER SUPPLIES

Supply Voltage

AVDD

Full

1.7

1.8

1.9

V

DRVDD

Full

1.7

1.8

1.9

V

Supply Current

Full

238

260

mA

Full

154

215

mA

POWER CONSUMPTION

Sine Wave Input1 (DRVDD = 1.8 V)

Full

706

855

mW

Standby Power4

Full

90

mW

Power-Down Power

Full

10

mW