
AD73322L
Rev. A | Page 10 of 48
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
00691-006
VFBN2
28
VINN2
27
VFBP2
26
VINP2
25
VOUTN1
24
VOUTP1
23
VOUTN2
22
VOUTP2
21
AVDD1
20
AGND1
19
SE
18
SDI
17
SDIFS
16
SDOFS
15
VINP1
1
VFBP1
2
VINN1
3
VFBN1
4
REFOUT
5
REFCAP
6
AVDD2 7
AGND2
8
DGND
9
DVDD 10
RESET 11
SCLK 12
MCLK 13
SDO 14
AD73322L
TOP VIEW
(Not to Scale)
Figure 6. 28-Lead Wide Body
00691-007
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AD73322L
TOP VIEW
VFBP1
VINN1
VFBN1
AVDD2
REFCAP
REFOUT
VINP1
VINN2
VFBP2
VINP2
VOUTN2
VOUTP1
VOUTN1
AGND2
DGND
DVDD
SDO
SCLK
RESET
VOUTP2
AVDD1
AGND1
SDOFS
MCLK
SDIFS
SDI
SE
VFBN2
Figure 7. 28-Lead Thin Shrink
00691-008
44
NC
43
V
F
BN1
42
V
INN1
41
VFB
P
1
40
VIN
P
1
39
NC
38
VFB
N
2
37
V
INN2
36
VFB
P
2
35
VIN
P
2
34
NC
32
VOUTN1
31
VOUTP1
30
NC
27
NC
28
VOUTP2
29
VOUTN2
33
NC
26
AVDD1
25
AVDD1
24
AGND1
23 AGND1
2
REFCAP
3
AVDD2
4
AVDD2
7
AGND2
6
AGND2
5
AGND2
1
REFOUT
8
AGND2
9
DGND
10
DGND
11
DVDD
NC = NO CONNECT
12
NC
13
R
ESET
14
SC
LK
15
MCLK
16
SD
O
17
NC
18
SD
OFS
19
SD
IFS
20
SD
I
21
SE
22
NC
PIN 1
AD73322L
TOP VIEW
(Not to Scale)
Figure 8. 44-Lead Plastic Thin Quad Flatpack
Table 6. Pin Function Descriptions
Mnemonic
Function
VINP1
Analog Input to the inverting input amplifier on Channel 1’s positive input.
VFBP1
Feedback Connection from the output of the inverting amplifier on Channel 1’s positive input. When the input amplifiers are
bypassed, this pin allows direct access to the positive input of Channel 1’s sigma-delta modulator.
VINN1
Analog Input to the inverting input amplifier on Channel 1’s negative input.
VFBN1
Feedback connection from the output of the inverting amplifier on Channel 1’s negative input. When the input amplifiers are
bypassed, this pin allows direct access to the negative input of Channel 1’s sigma-delta modulator.
REFOUT
Buffered Reference Output, which has a nominal value of 1.2 V.
REFCAP
A bypass capacitor to AGND2 of 0.1 F is required for the on-chip reference. The capacitor should be fixed to this pin.
AVDD2
Analog Power Supply Connection.
AGND2
Analog Ground/Substrate Connection2.
DGND
Digital Ground/Substrate Connection.
DVDD
Digital Power Supply Connection.
RESET
Active Low Reset Signal. This input resets the entire chip, resetting the control registers and clearing the digital circuitry.