Datasheet

Data Sheet AD7609
Rev. A | Page 17 of 36
80
85
90
95
100
105
10 100 10k 10k 100k
SNR (dBs)
INPUT FREQUENCY (Hz)
NO OS
OS × 2
OS × 4
OS × 8
OS × 16
OS × 32
OS × 64
AV
CC
, V
DRIVE
= 5V
f
SAMPLE
CHANGES WITH OS RATE
T
A
= 25°C
INTERNAL REFERENCE
±5V RANGE
09760-018
Figure 20. SNR vs. Input Frequency, ±5 V Range
–120
–110
–100
–90
–80
–70
–60
1 10 100
THD (dB)
FREQUENCY (kHz)
±10V RANGE
AV
CC
, V
DRIVE
= 5V
T
A
= 25°C
f
SAMPLE
= 200 kSPS
R
SOURCE
MATCHED
ON V
x
+, V
x
– INPUTS
10kΩ
5kΩ
10Ω
0Ω
1.2kΩ
500Ω
09760-020
Figure 21. THD vs. Input Frequency for Various Source Impedances,
±10 V Range
–120
–110
–100
–90
–80
–70
–60
–50
–40
1 10 100
THD (dB)
FREQUENCY (kHz)
09760-019
±5V RANGE
AV
CC
, V
DRIVE
= 5V
T
A
= 25°C
f
SAMPLE
= 200 kSPS
R
SOURCE
MATCHED
ON V
x
+, V
x
– INPUTS
10kΩ
5kΩ
10Ω
0Ω
1.2kΩ
500Ω
Figure 22. THD vs. Input Frequency for Various Source Impedances,
±5 V Range
200 kSPS
AV
CC
,V
DRIVE
= 5V
EXTERNAL REFERENCE
09760-023
±5V RANGE
±10V RANGE
–6
–4
–2
0
2
4
6
8
–40 –20
0
20 40 60 80
BIPOLAR ZERO ERROR (LSB)
TEMPERATURE (°C)
Figure 23. Bipolar Zero Code Error vs. Temperature
16
12
8
4
0
–4
–8
–12
–40 –25 –10 5 20 35 50 65 80
–16
BIPOLAR ZERO CODE ERROR MATCHING (LSB)
TEMPERATURE (°C)
200kSPS
AV
CC
, V
DRIVE
= 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
09760-224
Figure 24. Bipolar Zero Code Error Matching Between Channels
–50
–60
–70
–80
–90
–100
–110
–120
–130
0 1601401201008060
4020
–140
CHANNEL-TO-CHANNEL ISOLATION (dB)
NOISE FREQUENCY (kHz)
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
AD7609 RECOMMENDED DECOUPLING USED
f
SAMPLE
= 200kSPS
T
A
= 25°C
09760-225
±5V RANGE
±10V RANGE
Figure 25. Channel-to-Channel Isolation