19
RESET_AB
Reset signal , valid in low level
9
RESET_CD
Reset signal , valid in low level
6
SD_AB
Signal switch off control
5
SD_CD
Signal switch off control
IIV. IC SE5532
IC SE5532 is an amplified IC with dual channels and low noise. Compared to most other amplified
ICs, it has lower noise, better output performance and power bandwidth. Its main features are:
small-signal bandwidth; its direct voltage gain can be up to 50000 and alternating voltage gain can
be up to 2200 under 10KHz; its power bandwidth can be up to 140KHz; relatively larger power
supply range; fast slewing rate. Basic functions of its pins are as shown in the following table:
Pin
Name
Function description
1
OUTPUT-A
Output channel A
2
INVERT ING INPUT-A
Inverted input A
3
NON-INVERTING INPUT-A
Non-inverted input A
4
V-
Negative power supply
5
NON-INVERTING INPUT-B
Non-inverted input B
6
INVERTING INPUT-B
Inverted input B
7
OUTPUT-B
Output channel B
8
V+
Positive power supply
IIIV
、
CS 5340
CS 5340 is an IC of analog/digital conversion; it can be applied to sample, analog-to-digital
conversion and filter. During continuous input, its sampling frequency can be up to 200KHz. Its
main features are as follows:
24 bytes conversion; supported audio frequency can be up to 192KHz; under power of 5V, its
dynamic range can be up to 101DB; it has high pass filter to filter direct current. Functions of its
pins are as follows:
Pins
Name
Function description
1
M0
Mode selection
16
M1
Mode selection
2
MCLK
Master clock signal
3
VL
Logic voltage power supply
4
SDOUT
Audio data output
5
，
14
GND
Grounding
6
VD
Digital power
7
SCLK
DRAM clock signal
8
LRCK
RF clock signal
9
RST
Reset signal
10
AINL
Analog input
12
AINR
Analog input
11
VQ
Quiescent voltage
13
VA
Analog power
15
FILT+
Reference voltage
