Data Sheet

AD7682/AD7689

Rev. H | Page 5 of 35

Parameter

Test Conditions/

Comments

AD7689A

AD7682B/AD7689B

Unit

Min

Typ

Max

Min

Typ

Max

WLFCSP

91

92

dB

internal REF

89.5

91

dB

internal REF

86

87.5

dB

SINAD

LFCSP

89

91

92.5

dB

−60 dB input

30.5

33.5

dB

internal REF

88

90

91

dB

internal REF

86

87

88.4

dB

WLFCSP

89.5

91

dB

−60 dB input

32

dB

internal REF

88.5

89.5

dB

internal REF

85.5

87

dB

Total Harmonic

Distortion (THD)

−97

−100

dB

Spurious-Free Dynamic

Range

105

110

dB

Channel-to-Channel

Crosstalk

adjacent channel(s)

−120

−125

dB

SAMPLING DYNAMICS

−3 dB Input Bandwidth

Full bandwidth

1.7

1.7

MHz

¼ bandwidth

0.425

0.425

MHz

Aperture Delay

VDD = 5 V

2.5

2.5

ns

1

See the Analog Inputs section.

2

The bandwidth is set in the configuration register.

3

LSB means least significant bit. With the 5 V input range, one LSB is 76.3 µV.

4

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

5

With VDD = 5 V, unless otherwise noted.

6

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.