AD7625 datasheet(4/25 Pages) AD

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Data Sheet

AD7625

Rev. B | Page 3 of 24

SPECIFICATIONS

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

Table 2.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

RESOLUTION

Bits

ANALOG INPUT

Voltage Range

VIN+ − VIN−

−VREF

+VREF

Operating Input Voltage

VIN+, VIN− to GND

−0.1

VREF + 0.1

Common-Mode Input Range

VREF/2 − 0.05

VREF/2

VREF/2 + 0.05

Common-Mode Rejection Ratio

fIN = 1 MHz

Input Current

Midscale input

μA

THROUGHPUT

Complete Cycle

166

Throughput Rate

0.1

MSPS

DC ACCURACY

Integral Linearity Error

−1

±0.45

LSB

No Missing Codes

Bits

Differential Linearity Error

−0.5

±0.3

+0.5

LSB

Transition Noise

0.6

LSB

Zero Error

TMIN to TMAX

−4

±1.5

LSB

Zero Error Drift

0.5

ppm/°C

Gain Error

TMIN to TMAX

LSB

Gain Error Drift

0.4

ppm/°C

Power Supply Sensitivity1

VDD1 = 5 V ± 5%

0.4

LSB

VDD2 = 2.5 V ± 5%

0.2

LSB

AC ACCURACY

External Reference

fIN = 20 kHz

Dynamic Range

92.5

93.2

Signal-to-Noise Ratio

Spurious-Free Dynamic Range

106

Total Harmonic Distortion

−105.5

Signal-to-(Noise + Distortion)

91.5

Internal Reference

fIN = 20 kHz

Dynamic Range

92.5

93.2

Signal-to-Noise Ratio

91.5

92.9

Spurious-Free Dynamic Range

106

Total Harmonic Distortion

−105.5

Signal-to-(Noise + Distortion)

92.5

−3 dB Input Bandwidth

100

MHz

Aperture Delay

1.5

Aperture Jitter

0.25

ps rms

INTERNAL REFERENCE

Output Voltage

REFIN @ 25°C

1.2

Temperature Drift

−40°C to +85°C

±15

ppm/°C

REFERENCE BUFFER

REFIN Input Voltage Range

1.2

REF Output Voltage Range

4.076

4.096

4.116

Line Regulation

VDD1 ± 5%, VDD2 ± 5%

EXTERNAL REFERENCE

Voltage Range

REF

4.096

Current Drain

6 MSPS

590

μA

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