CS3302A
DS765PP1
CS3302A
3. PIN DESCRIPTION
Pin Name
Pin #
I/O
Pin Description
VA+
1
I
Positive analog supply voltage.
VA-
4
I
Negative analog supply voltage.
VD
16
I
Positive digital supply voltage.
GND
15, 18
5, 6
8, 7
13
I
Ground.
INA+, INA-
INB+, INB-
GUARD
OUTR+, OUTR-
OUTF+, OUTF-
I
Channel A differential analog inputs. Selected via MUX pins.
Channel B differential analog inputs. Selected via MUX pins.
Guard voltage output.
I
O
O
O
I
11, 2
10, 3
Rough charge differential analog outputs.
Fine charge differential analog outputs.
GAIN0, GAIN1,
GAIN2
22, 21,
20
Gain range select. See Gain Selection table in Digital Characteristics section.
PWDN
19
24, 23
12
I
I
Power down mode enable. Active high.
MUX0, MUX1
TEST0
Analog input select. See Input Selection table in Digital Characteristics section.
Test mode select, factory use only. Connect to VA- during normal operation.
Test mode select, factory use only. Connect to GND during normal operation.
Test mode output, factory use only. Do not connect during normal operation.
I
TEST1, TEST2
TESTOUT
17, 14
9
I
O
Table 2. Pin Descriptions
Positive Analog Power Supply
Negative Analog Rough Output
Negative Analog Fine Output
Negative Analog Power Supply
Non-Inverting Input A
VA+
OUTR-
OUTF-
VA-
1
24
23
22
21
20
19
18
17
16
15
14
13
MUX0
MUX1
GAIN0
GAIN1
GAIN2
PWDN
GND
Input Mux Select
Input Mux Select
Gain Range Select
Gain Range Select
Gain Range Select
Power Down Mode Enable
Ground
2
3
4
INA+
INA-
5
Inverting Input A
6
Inverting Input B
INB-
7
Non-Inverting Input B
INB+
TEST1
VD
Test Mode Select
Positive Digital Power Supply
Ground
8
Test Mode Output TESTOUT
9
Positive Analog Fine Output
OUTF+
OUTR+
TEST0
GND
10
11
12
Positive Analog Rough Output
Test Mode Select
TEST2
GUARD
Test Mode Select
Guard Voltage Output
Figure 6. CS3302A Pin Assignments
14
DS765PP1
CIRRUS [ CIRRUS LOGIC ]
