Datasheet

Data Sheet AD7606/AD7606-6/AD7606-4
Rev. C | Page 19 of 36
4
3
2
1
0
–1
–2
–3
–40 –25 –10 5 20 35 50 65 80
–4
BIPOLAR ZERO CODE ERROR MATCHING (LSB)
TEMPERATURE (°C)
08479-024
200kSPS
AV
CC
, V
DRIVE
= 5V
EXTERNAL REFERENCE
5V RANGE
10V RANGE
Figure 23. Bipolar Zero Code Error Matching Between Channels
–40
–50
–60
–70
–80
–90
–100
–110
1k 100k10k
–120
THD (dB)
INPUT FREQUENCY (Hz)
08479-021
±10V RANGE
AV
CC
, V
DRIVE
= +5V
F
SAMPLE
= 200kSPS
R
SOURCE
MATCHED ON Vx AND VxGND INPUTS
105kΩ
48.7kΩ
23.7kΩ
10kΩ
5kΩ
1.2kΩ
100Ω
51Ω
0Ω
Figure 24. THD vs. Input Frequency for Various Source Impedances,
±10 V Range
1k 100k10k
THD (dB)
INPUT FREQUENCY (Hz)
08479-122
±5V RANGE
AV
CC
, V
DRIVE
= +5V
F
SAMPLE
= 200kSPS
R
SOURCE
MATCHED ON Vx AND VxGND INPUTS
105kΩ
48.7kΩ
23.7kΩ
10kΩ
5kΩ
1.2kΩ
100Ω
51Ω
0Ω
–40
–50
–60
–70
–80
–90
–100
–110
–120
Figure 25. THD vs. Input Frequency for Various Source Impedances,
±5 V Range
98
96
94
92
90
88
86
84
82
10 100k10k1k100
80
SNR (dB)
INPUT FREQUENCY (Hz)
08479-020
NO OS
OS BY 2
OS BY 4
OS BY 8
OS BY 16
OS BY 32
OS BY 64
AV
CC
, V
DRIVE
= 5V
F
SAMPLE
CHANGES WITH OS RATE
T
A
= 25°C
INTERNAL REFERENCE
±5V RANGE
Figure 26. SNR vs. Input Frequency for Different Oversampling Rates, ±5 V Range
100
98
96
94
92
90
88
86
84
82
10 100k10k1k100
80
SNR (dB)
INPUT FREQUENCY (Hz)
08479-121
NO OS
OS BY 2
OS BY 4
OS BY 8
OS BY 16
OS BY 32
OS BY 64
AV
CC
, V
DRIVE
= 5V
F
SAMPLE
CHANGES WITH OS RATE
T
A
= 25°C
INTERNAL REFERENCE
±10V RANGE
Figure 27. SNR vs. Input Frequency for Different Oversampling Rates, ±10 V Range
–50
–60
–70
–80
–90
–100
–110
–120
–130
0 16014012010080604020
–140
CHANNEL-TO-CHANNEL ISOLATION (dB)
NOISE FREQUENCY (kHz)
08479-025
±10V RANGE
±5V RANGE
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
AD7606 RECOMMENDED DECOUPLING USED
F
SAMPLE
= 150kSPS
T
A
= 25°C
INTERFERER ON ALL UNSELECTED CHANNELS
Figure 28. Channel-to-Channel Isolation