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AD73322L
Rev. A | Page 13 of 48
TYPICAL PERFORMANCE CHARACTERISTICS AND FUNCTIONAL BLOCK DIAGRAM
00691-009
VIN (dBm0)
5
3.17
–85
–75
–65
–55
–45
–35
–25
–15
–5
S
/(N
+
D)
(dB)
80
60
70
50
30
40
10
20
0
–10
Figure 9. S/N(N = D) vs. VIN (ADC @ 3 V) over Voice Bandwidth
(300 Hz to 3.4 kHz)
00691-010
VIN (dBm0)
5
3.17
–85
–75
–65
–55
–45
–35
–25
–15
–5
S
/(N
+
D)
(dB)
80
60
70
50
30
40
10
20
0
–10
Figure 10. S/N(N = D) vs. VIN (DAC @ 3 V) over Voice Bandwidth
(300 Hz to 3.4 kHz)
INVERT
SINGLE-ENDED
ENABLE
DECIMATOR
SERIAL
I/O
PORT
CONTINUOUS
TIME
LOW-PASS
FILTER
1-BIT
DAC
SWITCHED
CAPACITOR
LOW-PASS
FILTER
DIGITAL
Σ-
MODULATOR
DIGITAL
Σ-
MODULATOR
INTER-
POLATOR
VREF
VFBN1
VINN1
VINP1
VFBP1
VOUTP1
VOUTN1
AD73322L
AGND1
AGND2
DGND
SDOFS
SDO
MCLK
SE
RESET
SCLK
SDIFS
SDI
DVDD
AVDD2
AVDD1
ANALOG
LOOP-
BACK
+6/15dB
PGA
0/38dB
PGA
GAIN
±1
GAIN
±1
INVERT
SINGLE-ENDED
ENABLE
DECIMATOR
CONTINUOUS
TIME
LOW-PASS
FILTER
1-BIT
DAC
SWITCHED
CAPACITOR
LOW-PASS
FILTER
DIGITAL
Σ-
MODULATOR
DIGITAL
Σ-
MODULATOR
INTER-
POLATOR
VREF
REFCAP
REFOUT
REFERENCE
VFBN2
VINN2
VINP2
VFBP2
VOUTP2
VOUTN2
ANALOG
LOOP-
BACK
+6/–15dB
PGA
0/38dB
PGA
GAIN
±1
GAIN
±1
00691-011
Figure 11. Functional Block Diagram