Datasheet

AD8137 Data Sheet
Rev. E | Page 28 of 32
AD8137
+
–
1nF
1nF
V
OCM
V
S
–
V
S
+
V+
1.0kΩ
1.0kΩ
20kHz
33Ω
33Ω
04771-0-067
499Ω
499Ω
+2.5
AD7687
GND
V
DD
V
IN
GND
BPF
Figure 69. AD8137 Driving AD7687, 16-Bit 250 KSPS ADC
FREQUENCY (kHz)
AMPLITUDE (dB OF FULL SCALE)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
0 4020 60 12010080 140
04771-0-068
THD = –93.63dBc
SNR = 91.10dB
SINAD = 89.74dB
ENOB = 14.6
Figure 70. AD8137 Performance on Single 5 V Supply, −1.82 dBFS
FREQUENCY (kHz)
AMPLITUDE (dB OF FULL SCALE)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
0 4020 60 12010080 140
04771-0-069
THD = –91.75dBc
SNR = 91.35dB
SINAD = 88.75dB
ENOB = 14.4
Figure 71. AD8137 Performance on +6 V, −1 V Supplies, −0.45 dBFS