AD7322 datasheet(4/37 Pages) AD

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Data Sheet

AD7322

Rev. B | Page 3 of 36

SPECIFICATIONS

Unless otherwise noted, VDD = 12 V to 16.5 V, VSS = −12 V to −16.5 V, VCC = 4.75 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, VREF = 2.5 V to 3.0 V

internal/external, fSCLK = 20 MHz, fS = 1 MSPS, TA = TMAX to TMIN; for VCC < 4.75 V, all specifications are typical.

Table 2.

B Version

Parameter1

Min

Typ

Max

Unit

Test Conditions/Comments

DYNAMIC PERFORMANCE

fIN = 50 kHz sine wave

Signal-to-Noise Ratio (SNR)2

Differential mode

72.5

Single-ended/pseudo differential mode

Signal-to-Noise + Distortion (SINAD)2

Differential mode; ±2.5 V and ±5 V ranges

Differential mode; 0 V to +10 V and ±10 V ranges

Single-ended/pseudo differential mode;

±2.5 V and ±5 V ranges

72.5

Single-ended/pseudo differential mode;

0 V to +10 V and ±10 V ranges

Total Harmonic Distortion (THD)2

−80

Differential mode; ±2.5 V and ±5 V ranges

−82

Differential mode; 0 V to +10 V and ±10 V ranges

−77

Single-ended/pseudo differential mode;

±2.5 V and ±5 V ranges

−80

Single-ended/pseudo differential mode;

0 V to +10 V and ±10 V ranges

Peak Harmonic or Spurious Noise

(SFDR)2

−80

Differential mode; ±2.5 V and ±5 V ranges

−82

Differential mode; 0 V to +10 V and ±10 V ranges

−78

Single-ended/pseudo differential mode;

±2.5 V and ±5 V ranges

−79

Single-ended/pseudo differential mode;

0 V to +10 V and ±10 V ranges

Intermodulation Distortion (IMD)2

fa = 50 kHz, fb = 30 kHz

Second-Order Terms

−88

Third-Order Terms

−90

Aperture Delay3

Aperture Jitter3

Common-Mode Rejection Ratio

(CMRR)2

−79

Up to 100 kHz ripple frequency; see Figure 17

Channel-to-Channel Isolation2

−72

fIN on unselected channels up to 100 kHz; see Figure 14

Full Power Bandwidth

MHz

At 3 dB

MHz

At 0.1 dB

DC ACCURACY

All dc accuracy specifications are typical for 0 V to

10 V mode

Single-ended/pseudo differential mode:

1 LSB = FSR/4096; unless otherwise noted

Differential mode: 1 LSB = FSR/8192; unless

otherwise noted

Resolution

Bits

No Missing Codes

12-bit plus

sign (13 bits)

Bits

Differential mode

11-bit plus

sign (12 bits)

Bits

Single-ended/pseudo differential mode

Integral Nonlinearity2

±1.1

LSB

Differential mode

±1

LSB

Single-ended/pseudo differential mode

−0.7/+1.2

LSB

Single-ended/pseudo differential mode

(LSB = FSR/8192)

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