CS3302 Datasheet, PDF (14/15 Pages) Cirrus Logic – HIGH Z PROGRAMMABLE GAIN DIFFERENTIAL AMPLIFIER

3. PIN DESCRIPTION
CS3302
Positive Analog Power Supply
VA+ 1
Negative Analog Rough Output
OUTR- 2
Negative Analog Fine Output
OUTF- 3
Negative Analog Power Supply
VA- 4
Non-Inverting Input A
INA+ 5
Inverting Input A
INA- 6
Inverting Input B
INB- 7
Non-Inverting Input B
INB+ 8
Test Mode Output TESTOUT 9
Positive Analog Fine Output
OUTF+ 10
Positive Analog Rough Output
OUTR+ 11
Test Mode Select
TEST0 12
24 MUX0
Input Mux Select
23 MUX1
Input Mux Select
22 GAIN0 Gain Range Select
21 GAIN1 Gain Range Select
20 GAIN2 Gain Range Select
19 PWDN Power Down Mode Enable
18 LPWR Low Power Mode Enable
17 TEST1 Test Mode Select
16 VD
Positive Digital Power Supply
15 DGND Digital Ground
14 TEST2 Test Mode Select
13 GUARD Guard Voltage Output
Figure 5. CS3302 Pin Assignments
Pin Name
Pin #
VA+
1
VA-
4
VD
16
DGND
15
INA+, INA-
5, 6
INB+, INB-
8, 7
GUARD
13
OUTR+, OUTR- 11, 2
OUTF+, OUTF- 10, 3
GAIN0, GAIN1, 22, 21,
GAIN2
20
LPWR
18
PWDN
19
MUX0, MUX1 24, 23
TEST0
12
TEST1, TEST2 17, 14
TESTOUT
9
I/O
Pin Description
I Positive analog supply voltage.
I Negative analog supply voltage.
I Positive digital supply voltage.
I Digital ground.
I Channel A differential analog inputs. Selected via MUX pins.
I Channel B differential analog inputs. Selected via MUX pins.
O Guard voltage output.
O Rough charge differential analog outputs.
O Fine charge differential analog outputs.
I Gain range select. See Gain Selection table in Digital Characteristics section.
I Low power mode enable. Active high.
I Power down mode enable. Active high.
I Analog input select. See Input Selection table in Digital Characteristics section.
I Test mode select, factory use only. Connect to VA- during normal operation.
I Test mode select, factory use only. Connect to DGND during normal operation.
O Test mode output, factory use only. Connect to VA- during normal operation.
Table 2. Pin Descriptions
14