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AD7658BSTZ Datasheet(PDF) 14 Page - Analog Devices

Part # AD7658BSTZ
Description  250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-/14-/12-Bit ADC
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7658BSTZ Datasheet(HTML) 14 Page - Analog Devices

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AD7656/AD7657/AD7658
Data Sheet
Rev. D | Page 14 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
0
–160
0
FREQUENCY (kHz)
125
–20
–40
–60
–80
–100
–120
–140
25
50
75
100
VDD/VSS = ±15V
AVCC/DVCC/VDRIVE = +5V
INTERNAL REFERENCE
±10V RANGE
TA = 25°C
fS = 250kSPS
fIN = 50kHz
SNR = +87.33dB
SINAD = +87.251dB
THD = –104.32dB
SFDR = –104.13dB
Figure 4. AD7656 FFT for ±10 V Range
0
–160
0
FREQUENCY (kHz)
125
–20
–40
–60
–80
–100
–120
–140
25
50
75
100
VDD/VSS = ±12V
AVCC/DVCC/VDRIVE = +5V
INTERNAL REFERENCE
±5V RANGE
TA = 25°C
fS = 250kSPS
fIN = 50kHz
SNR = +86.252dB
SINAD = +86.196dB
THD = –105.11dB
SFDR = –98.189dB
Figure 5. AD7656 FFT for ±5 V Range
2.0
–2.0
0
10k
20k
30k
40k
50k
60k 65535
CODE
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±12V
fSAMPLE = 250kSPS
2 × VREF RANGE
INL WCP = 0.64LSB
INL WCN = –0.76LSB
Figure 6. AD7656 Typical INL
2.0
–2.0
0
10k
20k
30k
40k
50k
60k 65535
CODE
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±12V
fSAMPLE = 250kSPS
2 × VREF RANGE
DNL WCP = 0.81LSB
DNL WCN = –0.57LSB
Figure 7. AD7656 Typical DNL
0
2000
4000
6000
8000
10000
12000
14000
16383
CODE
2.0
–2.0
1.6
0.8
0
–0.8
–1.6
1.2
0.4
–0.4
–1.2
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±12V
fSAMPLE = 250kSPS
2 × VREF RANGE
Figure 8. AD7657 Typical INL
2.0
–2.0
1.6
0.8
0
–0.8
–1.6
1.2
0.4
–0.4
–1.2
0
2000
4000
6000
8000
10000
12000
14000
16383
CODE
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±12V
Figure 9. AD7657 Typical DNL



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