AD7770 Datasheet, PDF (24/94 Pages) Analog Devices – 8-Channel, 24-Bit, Simultaneous Sampling ADC

AD7770
0.017
0.011
0.005
AVDD1x = 3.3V
V_REF = 2.5V
V_IN = 0dBFS
0
–0.005
CH 0
CH 1
CH 2
CH 3
CH 4
CH 5
CH 6
CH 7
–0.011
–0.017
–0.023
–0.029
–0.035
–0.400
–40
25
105
125
TEMPERATURE (°C)
Figure 50. Gain Error vs. Temperature, High Resolution Mode
0.09
0.08
0.07
TEMPERATURE = 25°C
AVDD1x = 3.3V
V_REF = 2.5V
V_IN = 0dBFS
0.06
0.05
HIGH RESOLUTION
LOW POWER
0.04
0.03
0.02
0.01
0
1
2
4
8
PGA GAIN
Figure 51. Channel Gain Mismatch, High Resolution Mode
0.005
0
–0.005
–0.010
–0.015
–0.020
–0.025
–0.030
–40
TEMPERATURE = 25°C
V_IN = –0.5dBFS
V_REF = 2.5V
AVDD1x = 3.3V
GAIN = 1
25
105
TEMPERATURE (°C)
CH 0
CH 1
CH 2
CH 3
CH 4
CH 5
CH 6
CH 7
125
Figure 52. Total Unadjusted Error (TUE) vs. Temperature,
High Resolution Mode
Data Sheet
0.017
0.011
0.005
AVDD1x = 3.3V
V_REF = 2.5V
V_IN = 0dBFS
0
–0.005
CH 0
CH 1
CH 2
CH 3
CH 4
CH 5
CH 6
CH 7
–0.011
–0.017
–0.023
–0.029
–0.035
–0.400
–40
25
105
125
TEMPERATURE (°C)
Figure 53. Gain Error vs. Temperature, Low Power Mode
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–40
25
105
125
TEMPERATURE (°C)
Figure 54. Internal Reference Voltage Drift
0.010
0.005
TEMPERATURE = 25°C
V_IN = –0.5dBFS
V_REF = 2.5V
AVDD1x = 3.3V
GAIN = 1
0
–0.005
–0.010
–0.015
–40
CH 0
CH 1
CH 2
CH 3
CH 4
CH 5
CH 6
CH 7
25
105
125
TEMPERATURE (°C)
Figure 55. Total Unadjusted Error (TUE) vs. Temperature, Low Power Mode
Rev. A | Page 24 of 94