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| Part Number | LM4937TLX/NOPB | LM4947TLX/NOPB | LM4937RLX/NOPB | LM4937TL/NOPB |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | National Semiconductor | National Semiconductor |
| Product Status | Discontinued at Digi-Key | Active | Obsolete | Active |
| Type | Class AB | Class D | Class AB | - |
| Output Type | 1-Channel (Mono) with Mono and Stereo Headphones | 1-Channel (Mono) with Stereo Headphones | 1-Channel (Mono) with Mono and Stereo Headphones | - |
| Max Output Power x Channels @ Load | 1.25W x 1 @ 8Ohm; 80mW x 2 @ 32Ohm | 1.19W x 1 @ 8Ohm; 87mW x 2 @ 32Ohm | 1.25W x 1 @ 8Ohm; 80mW x 2 @ 32Ohm | - |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | - |
| Features | Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control | 3D, Depop, Differential Inputs, I²C, Mute, Shutdown, SPI, Thermal Protection, Volume Control | Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | - |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | 36-uSMD | 25-uSMD | 36-DSBGA | - |
| Package / Case | 36-WFBGA | 25-WFBGA | 36-WFBGA, DSBGA | - |
