Cirrus Logic CS5372A - Manual (Page 27)

CS5371A CS5372A
DS748F3 27
10. PIN DESCRIPTION - CS5372A
Power Supplies
VA+
_
Positive Analog Power Supply, pin 8
VA-
_
Negative Analog Power Supply, pin 7
VD
_
Positive Digital Power Supply, pin 18
GND
_
Ground, pin 17, 23
Analog Inputs
INR1+, INR2+
_
Channel 1 & 2 Rough Non-Inverting Inputs, pin 1, 12
Rough non-inverting analog inputs. The rough inputs settle non-linear currents to improve
linearity on the fine inputs and reduce harmonic distortion.
INF1+, INF2+
_
Channel 1 & 2 Fine Non-Inverting Input, pin 2, 11
Fine non-inverting analog inputs.
INF1-, INF2-
_
Channel 1 & 2 Fine Inverting Input, pin 3, 10
Fine inverting analog inputs.
INR1-, INR2-
_
Channel 1 & 2 Rough Inverting Inputs, pin 4, 9
Rough inverting analog inputs. The rough inputs settle non-linear currents to improve linearity
on the fine inputs and reduce harmonic distortion.
1
2
3
4
5
6
7
8 17
18
19
20
21
22
23
24
9
10
11
12 13
14
15
16
Ch. 1 Rough Non-Inverting Input INR1+
Ch. 1 Fine Non-Inverting Input INF1+
Ch. 1 Fine Inverting Input INF1-
Ch. 1 Rough Inverting Input INR1-
Positive Voltage Reference Input VREF+
Negative Voltage Reference Input VREF-
Negative Analog Power Supply VA-
Positive Analog Power Supply VA+
Ch. 2 Rough Inverting Input INR2-
Ch. 2 Fine Inverting Input INF2-
Ch. 2 Fine Non-Inverting Input INF2+
Ch. 2 Rough Non-Inverting Input INR2+
PWDN1 Ch. 1 Power-down Enable
GND Digital Ground
MFLAG1 Ch. 1 Modulator Flag Output
MDATA1 Ch. 1 Modulator Data Output
MSYNC Modulator Sync Input
MCLK Modulator Clock Input
VD Positive Digital Power Supply
GND Digital Ground
MDATA2 Ch. 2 Modulator Data Output
MFLAG2 Ch. 2 Modulator Flag Output
OFST Offset Mode Select
PWDN2 Ch. 2 Power-down Enable