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| Part Number | LM4937RLX/NOPB | LM4937TLX/NOPB | LM4934RLX/NOPB | LM4935RLX/NOPB |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Discontinued at Digi-Key | Obsolete | Obsolete |
| Type | Class AB | Class AB | Class AB | Class D |
| Output Type | 1-Channel (Mono) with Mono and Stereo Headphones | 1-Channel (Mono) with Mono and Stereo Headphones | 2-Channel (Stereo) with Mono and Stereo Headphones | 1-Channel (Mono) with Stereo Headphones |
| Max Output Power x Channels @ Load | 1.25W x 1 @ 8Ohm; 80mW x 2 @ 32Ohm | 1.25W x 1 @ 8Ohm; 80mW x 2 @ 32Ohm | 1.2W x 2 @ 8Ohm; 80mW x 2 @ 32Ohm | 1.3W x 1 @ 8Ohm; 52mW x 2 @ 16Ohm |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Features | Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control | Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control | 3D, Depop, I²C, I²S, Mute, Shutdown, SPI, Volume Control | ADC, DAC, Depop, I²C, I²S, Microphone, Mute, PCM, Shutdown, SPI, Standby, Volume Control |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | 36-DSBGA | 36-uSMD | 42-DSBGA | 49-DSBGA |
| Package / Case | 36-WFBGA, DSBGA | 36-WFBGA | 42-WFBGA, DSBGA | 49-WFBGA, DSBGA |
