LM4937RL/NOPB National Semiconductor, LM4937RL/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM4937RL/NOPB
• Description: IC AUDIO SUBSYSTM 1.25W 36USMDXT
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4937RL/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.25W x 1 @ 8 Ohm; 80mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4937RLTR

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Pin Descriptions
Pin
C1
C2
C3
C4
C5
C6
D1
D2
D3
D4
D5
D6
A1
A2
A3
A4
A5
A6
B1
B2
B3
B4
B5
B6
E1
E2
E3
E4
E5
E6
F1
F2
F3
F4
F5
F6
I2S_SDATA
ADDR/ENB
Pin Name
PLL_VDD
PLL_GND
PLL_OUT
I2C_VDD
SDL/SCK
SDA/SDI
I2S_CLK
BYPASS
I2S_WS
VDD_IO
PLL_IN
DGND
MODE
MCLK
DVDD
AVDD
AGND
AGND
DIFF_
AGND
DIFF+
AVDD
GPIO
RHP
CHP
LHP
EP_
EP+
LS+
RIN
LIN
LS-
NC
NC
Analog
Digital/
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
A
A
A
A
D
A
A
A
A
A
A
A
A
A
A
A
A
A
I/O, Power
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
P
P
P
P
P
P
P
P
P
P
P
I
I
I
I
I
I
I
I
I
I
I
HEADPHONE CENTER PIN OUTPUT (1/2 VDD or GND)
I2C ADDRESS OR SPI ENB DEPENDING ON MODE
4
SELECTS BETWEEN I2C OR SPI CONTROL
ANALOG NEGATIVE DIFFERENTIAL INPUT
ANALOG POSITIVE DIFFERENTIAL INPUT
TEST PIN (MUST BE LEFT FLOATING)
ANALOG RIGHT CHANNEL INPUT
ANALOG LEFT CHANNEL INPUT
RIGHT HEADPHONE OUTPUT
ANALOG SUPPLY VOLTAGE
LEFT HEADPHONE OUTPUT
ANALOG SUPPLY VOLTAGE
DIGITAL SUPPLY VOLTAGE
I2S SERIAL DATA INPUT
HALF-SUPPLY BYPASS
PLL SUPPLY VOLTAGE
I2C SUPPLY VOLTAGE
LOUD SPEAKER OUT+
I/O SUPPLY VOLTAGE
I2C_SCL OR SPI_SCK
LOUDSPEAKER OUT-
PLL FILTER OUTPUT
I2C SDA OR SPI SDI
I2S WORD SELECT
I2S CLOCK SIGNAL
MONO EARPIECE+
PLL FILTER INPUT
MONO EARPIECE-
MASTER CLOCK
ANALOG GND
ANALOG GND
NO CONNECT
NO CONNECT
ANALOG GND
DIGITAL GND
Description
PLL GND