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LM4851

Features: Mono 1.1W (typ) and stereo 115mW (typ) outputSPI programmable 32 step digital volume control(-40.5dB to +6dB)Eight distinct SPI programmable output modes micro-SMD and LLP surface mount packaging Click and pop suppression circuitryThermal shutdown protection Low shutdown current (0.1&m...

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SeekIC No. : 004395804 Detail

LM4851: Features: Mono 1.1W (typ) and stereo 115mW (typ) outputSPI programmable 32 step digital volume control(-40.5dB to +6dB)Eight distinct SPI programmable output modes micro-SMD and LLP surface mount p...

LM4851 Data Sheet

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Part Number:
LM4851
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Mono 1.1W (typ) and stereo 115mW (typ) output
SPI programmable 32 step digital volume control(-40.5dB to +6dB)
Eight distinct SPI programmable output modes
micro-SMD and LLP surface mount packaging
"Click and pop" suppression circuitry
Thermal shutdown protection
Low shutdown current (0.1µA, typ)




Application

Mobile phones
PDAs




Pinout

Connection Diagram




Specifications

Power@ 4Ohms, 10% THD 1.9 Watt
Power@ 4Ohms, 1% THD 1.5 Watt
Power@ 8Ohms, 10% THD 1.4 Watt
Power@ 8Ohms, 1% THD 1.1 Watt
THD 0.3 %
PSRR 70 dB
SNR Undefined dB
Channels 3 Channels
THD Conditions Pout=1W @ Vs=5V, RL=4 Ohms, 20Hz-20kHz
PSRR Conditions 217 Hz, Input floating
SNR Conditions Undefined
User Supply 5 Volt
Audio Mux Yes
Capless Headphone Yes
ClassD Driver No
Interface I2C
Stereo Inputs 1
National 3D No
Digital Volume Control Max 6 dB
Digital Volume Control Min -40.5 dB
Output Modes 8
Supply Range +2.6 - +5 V
Mono Inputs 1
Temperature Min -40 deg C
Temperature Max 85 deg C
Loudspeaker Type Class AB
Headphone Type Virtual Ground
Loudspeaker Outputs 1
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Supply Voltage

6.0V

Storage Temperature
-65°C to +150°C
Input Voltage
-0.3V to VDD +0.3V
Power Dissipation (Note 11)
Internally limited
Solder Information (Note 1)Vapor Phase (60 sec.)
Infrared (15 sec.)
215°C
220°C
ESD Susceptibility (Note 13)
200V
Junction Temperature
150°C
Thermal Resistance
JA (typ) - LQA24A
JC (typ) - LQA24A
JA (typ) - BLA18AAB
JC (typ) - BLA18AAB
JA (typ) - TLA18AAA
JC (typ) - TLA18AAA
42°C/W
3.0°C/W
48°C/W (Note 9)
23°C/W (Note 9)
48°C/W (Note 9)
23°C/W (Note 9)





Description

The LM4851 is an audio power amplifier system capable of delivering 1.1W (typ) of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and 115mW (typ) per channel of continuous average power into stereo 32Ω BTL loads with 0.5% THD+N, using a 5V power supply. The LM4851 features a 32 step digital volume control and eight distinct output modes. The digital volume control and output modes are programmed through a three-wire SPI serial control interface, that allows flexibility in routing and mixing audio channels.

The LM4851 has 3 inputs: one pair for a two-channel stereo signal and the third for a singlechannel mono input.

The LM4851 is designed for cellular phone, PDA, and other portable handheld applications. It delivers high quality output power from a surface-mount package and requires only five external components.






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