ad73322l Analog Devices, Inc., ad73322l Datasheet - Page 13

• Manufacturer Part Number: ad73322l
• Description: Low Cost, Low Power Cmos General-purpose Dual Analog Front End
• Manufacturer: Analog Devices, Inc.

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