AD7684
Rev. A | Page 4 of 16
VDD = 5 V; V
REF
= VDD; T
A
= −40°C to +85°C, unless otherwise noted.
Table 3.
Parameter Conditions Min Typ Max Unit
ACCURACY
No Missing Codes 16 Bits
Integral Linearity Error −3 ±1 +3 LSB
Transition Noise 0.5 LSB
Gain Error,
1
T
MIN
to T
MAX
±2 ±15 LSB
Gain Error Temperature Drift ±0.3 ppm/°C
Zero Error,
1
T
MIN
to T
MAX
±0.4 ±1.6 mV
Zero Temperature Drift ±0.3 ppm/°C
Power Supply Sensitivity VDD = 5 V ± 5% ±0.05 LSB
AC ACCURACY
Signal-to-Noise Ratio f
IN
= 1 kHz 88 91 dB
2
Spurious-Free Dynamic Range f
IN
= 1 kHz −108 dB
Total Harmonic Distortion f
IN
= 1 kHz −106 dB
Signal-to-(Noise + Distortion) f
IN
= 1 kHz 88 91 dB
Effective Number of Bits f
IN
= 1 kHz 14.8 Bits
1
See the Terminology section. These specifications include full temperature range variation but do not include the error contribution from the external reference.
2
All specifications in dB are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
VDD = 2.7 V; V
REF
= 2.5 V; T
A
= −40°C to +85°C, unless otherwise noted.
Table 4.
Parameter Conditions Min Typ Max Unit
ACCURACY
No Missing Codes 16 Bits
Integral Linearity Error −3 ±1 +3 LSB
Transition Noise 0.85 LSB
Gain Error,
1
T
MIN
to T
MAX
±2 ±15 LSB
Gain Error Temperature Drift ±0.3 ppm/°C
Zero Error,
1
T
MIN
to T
MAX
±0.7 ±3.5 mV
Zero Temperature Drift ±0.3 ppm/°C
Power Supply Sensitivity VDD = 2.7 V ± 5% ±0.05 LSB
AC ACCURACY
Signal-to-Noise Ratio f
IN
= 1 kHz 86 dB
2
Spurious-Free Dynamic Range f
IN
= 1 kHz −100 dB
Total Harmonic Distortion f
IN
= 1 kHz −98 dB
Signal-to-(Noise + Distortion) f
IN
= 1 kHz 86 dB
Effective Number of Bits f
IN
= 1 kHz 14 Bits
1
See the Terminology section. These specifications do include full temperature range variation but do not include the error contribution from the external reference.
2
All specifications in dB are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
