AD7329 Analog Devices, AD7329 Datasheet - Page 12

• Manufacturer Part Number: AD7329
• Description: 1 MSPS , 8-Channel, Software Selectable True Bipolar Input, 12-Bit Plus Sign A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7329

• Resolution (bits): 13bit
• # Chan: 8
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 2.5V,Bip 5.0V,Uni (Vref),Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

AD7329
Figure 11. THD vs. Analog Input Frequency for True Differential Mode at 5 V V
Figure 12. SINAD vs. Analog Input Frequency for Single-Ended Mode at 5 V V
Figure 10. THD vs. Analog Input Frequency for Single-Ended Mode at 5 V V
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
74
73
72
71
70
69
68
67
66
10
10
10
V
V
T
f
INTERNAL REFERENCE
AD8021 BETWEEN MUX
V
V
T
f
INTERNAL REFERENCE
AD8021 BETWEEN MUX
V
V
T
f
INTERNAL REFERENCE
AD8021 BETWEEN MUX
S
S
S
CC
DD
A
AND ADC
CC
DD
A
AND ADC
CC
DD
A
AND ADC
0V TO +10V RANGE
0V TO +10V RANGE
0V TO +10V RANGE
= 1MSPS
= 1MSPS
= 1MSPS
= 25°C
= 25°C
= 25°C
= V
= 12V, V
= V
= 12V, V
= V
= 12V, V
DRIVE
DRIVE
DRIVE
IN+
IN
IN+
SS
ANALOG INPUT FREQUENCY (kHz)
SS
ANALOG INPUT FREQUENCY (kHz)
SS
ANALOG INPUT FREQUENCY (kHz)
PINS
= 5V
= 5V
= 5V
PINS
PINS
= –12V
= –12V
= –12V
OUT+
OUT
OUT+
±2.5V RANGE
100
100
100
±10V RANGE
±10V RANGE
±10V RANGE
±5V RANGE
±2.5V RANGE
±2.5V RANGE
±5V RANGE
±5V RANGE
1000
1000
1000
CC
Rev. A | Page 12 of 40
CC
CC
Figure 14. Channel-to-Channel Isolation with and Without
Figure 13. SINAD vs. Analog Input Frequency for True Differential Mode at 5 V V
–100
–55
–60
–65
–70
–75
–80
–85
–90
–95
–50
10k
80
75
70
65
60
55
50
9k
8k
7k
6k
5k
4k
3k
2k
1k
0
0
Figure 15. Histogram of Codes, True Differential Mode
10
V
V
T
f
INTERNAL REFERENCE
AD8021 BETWEEN MUX
S
A
AND ADC
CC
DD
= 1MSPS
= 25°C
= V
= 12V, V
–2
0
100
DRIVE
IN
the MUX
FREQUENCY OF INPUT NOISE (kHz)
SS
ANALOG INPUT FREQUENCY (kHz)
PINS
= 5V
= –12V
228
–1
200
±10V RANGE
OUT
+ and ADC
OUT
V
V
SINGLE-ENDED MODE
50kHz ON SELECTED CHANNEL
f
T
S
DD
CC
A
= 1MSPS
300
CODE
= 25°C
9469
100
= 12V, V
= V
0
WIRE LINK
DRIVE
IN
+ Pins
SS
400
= 5V
V
V
RANGE = ±10V
10k SAMPLES
T
CC
DD
A
0V TO +10V RANGE
= –12V
303
= 25°C
1
= 5V
= 12V, V
WITH AD8021
±5V RANGE
±2.5V RANGE
500
AD8021
SS
= –12V
0
2
600
1000
Between
CC