Data Sheet

AD7693

SPECIFICATIONS

Table 2.

Parameter

Conditions/Comments

Min

Typ

Max

Unit

RESOLUTION

16

Bits

ANALOG INPUT

Voltage Range

IN+ − (IN−)

V

Absolute Input Voltage

IN+, IN−

−0.1

V

Common-Mode Input Range

IN+, IN−

V

Analog Input CMRR

65

dB

Leakage Current at 25°C

Acquisition phase

1

nA

Input Impedance1

THROUGHPUT

Conversion Rate

0

500

kSPS

Transient Response

Full-scale step

400

ns

ACCURACY

No Missing Codes

16

Bits

Integral Linearity Error

−0.5

±0.25

+0.5

LSB2

Differential Linearity Error

−0.5

±0.25

+0.5

LSB

Transition Noise

REF = VDD = 5 V

0.35

LSB

Gain Error3

−20

±0.5

+20

LSB

Gain Error Temperature Drift

±0.3

ppm/°C

Zero Error3

−5

±0.5

+5

LSB

Zero Temperature Drift

±0.3

ppm/°C

Power Supply Sensitivity

VDD = 5 V ± 5%

±1

ppm

AC ACCURACY4

Dynamic Range

96

96.5

dB5

Signal-to-Noise

95.5

96

dB

95.5

dB

93

dB

93

dB

Signal-to-(Noise + Distortion)

95.5

96

dB

95.5

dB

90

dB

Total Harmonic Distortion

−120

−108

dB

−113

dB

−92

dB

Spurious-Free Dynamic Range

120

dB

114

dB

93.5

dB

Intermodulation Distortion6

115

dB

1

See the Analog Inputs section.

2

LSB means least significant bit. With the ±5 V input range, one LSB is 152.6 µV.

3

See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.

4

5

All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.

6

Rev. B | Page 3 of 24