AD7625 datasheet(3/11 Pages) AD

Part #	AD7625

Description	16-Bit, 6MSPS PulSAR Differential ADC

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Preliminary Technical Data

AD7625

Rev. PrB | Page 3 of 11

SPECIFICATIONS

VDD1 = 5 V; VDD2 = 2.5 V; VIO = 2.5 V; VREF = 4.096 V; all specifications TMIN to TMAX, unless otherwise noted.

Table 2.

Parameter

Conditions

Min

Typ

Max

Unit

RESOLUTION

16

Bits

ANALOG INPUT

Voltage Range

VIN+ − VIN−

−VREF

+VREF

V

Operating Input Voltage

VIN+, VIN− to AGND

−0.1

+VREF + 0.1

V

Common Mode Input Range

VREF/2 – 0.1

VREF/2

VREF/2 + 0.1

V

Analog Input CMRR

fIN = 1 MHz

60

dB

Input Current

6 MSPS throughput

350

μA

THROUGHPUT SPEED

Complete Cycle

166

ns

Throughput Rate

0.001

6

MSPS

DC ACCURACY

Integral Linearity Error

-2

±1

+2

LSB

No Missing Codes

16

Bits

Differential Linearity Error

-1

±0.3

+1

LSB

Transition Noise

0.6

LSB

Zero Error, TMIN to TMAX

±100

μV

Zero Error Drift

1

ppm/°C

Gain Error, TMIN to TMAX

50

ppm of FS

Gain Error Drift

1

ppm/°C

Power Supply Sensitivity

VDD1 = 5 V ± 5%

TBD

LSB

VDD2 = 2.5 V ± 5%

TBD

LSB

AC ACCURACY

Dynamic Range

90

92

dB

Signal-to-Noise

fIN = 250 kHz

90

92

dB

Spurious-Free Dynamic Range

fIN = 250 kHz

110

dB

fIN = TBD

90

dB

Total Harmonic Distortion

fIN = 250 kHz

-110

dB

fIN = TBD

-90

dB

Signal-to-(Noise + Distortion)

fIN = 250 kHz

92

dB

−3 dB Input Bandwidth

100

MHz

Aperture Delay

ns

Aperture jitter

5

ps rms

Transient Response

Full-Scale Step

50

ns

INTERNAL REFERENCE

Output Voltage

REFIN @ 25°C

1.2

V

Temperature Drift

−40°C to +85°C

±7

ppm/°C

REFERENCE BUFFER

REFIN Input Voltage Range

1.2

V

REF Output Voltage range

4.096

V

EXTERNAL REFERENCE

Voltage Range

REF

4.096

V

VCM

@ 25°C

Output Voltage

VREF/2

Output Impedance

4

5

6

kΩ

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