CS3302A Datasheet, PDF (14/16 Pages) Cirrus Logic – High-Z, Programmable Gain, Differential Amplifier

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