Specifications
| Type | Description |
|---|---|
| Part Number | LM4910 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | MSOP, LLP, SOIC; dimensions not provided in supplied excerpt |
| Output Power | 35 mW typ; VDD=3.3 V, RL=32 ohm, THD+N <= 1% |
| Power Supply Rejection Ratio | 65 dB typ; f=217 Hz |
| Shutdown Current | 0.1 uA typ; shutdown mode |
| Operating Supply Voltage | 2.2 V to 5.5 V; operating ratings |
| Supply Voltage Absolute Maximum | 6.0 V; absolute maximum rating |
| Input Voltage Absolute Maximum | -0.3 V to VDD + 0.3 V; absolute maximum rating |
| Storage Temperature | -65 C to +150 C; absolute maximum rating |
| Junction Temperature | 150 C; absolute maximum rating |
| Operating Ambient Temperature | -40 C to +85 C; operating ratings |
| Power Dissipation | Internally limited; absolute maximum rating |
| ESD Susceptibility Pin 6 | 10 kV; human body model, 100 pF discharged through 1.5 kohm resistor, Pin 6 to ground |
| ESD Susceptibility | 2000 V; human body model, 100 pF discharged through 1.5 kohm resistor |
| ESD Susceptibility | 200 V; machine model, 220 pF to 240 pF discharged through all pins |
| Thermal Resistance Junction-to-Case | 56 C/W; MSOP package |
| Thermal Resistance Junction-to-Ambient | 190 C/W; MSOP package |
| Thermal Resistance Junction-to-Case | 35 C/W; SOIC package |
| Thermal Resistance Junction-to-Ambient | 150 C/W; SOIC package |
| Thermal Resistance Junction-to-Case | 57 C/W; LQ/LLP package |
| Thermal Resistance Junction-to-Ambient | 140 C/W; LQ/LLP package |
| Quiescent Power Supply Current | 3.5 mA typ, 6 mA max; VDD=3.3 V, AV=1, 32 ohm load, VIN=0 V, TA=25 C |
| Standby Current | 0.1 uA typ, 1.0 uA max; VDD=3.3 V, SHUTDOWN=GND, TA=25 C |
| Output Offset Voltage | 5 mV typ, 30 mV max; VDD=3.3 V, AV=1, 32 ohm load, TA=25 C |
| Output Power | 35 mW typ, 30 mW min; VDD=3.3 V, AV=1, RL=32 ohm, THD=1% max, f=1 kHz, TA=25 C |
| Total Harmonic Distortion Plus Noise | 0.3% typ; VDD=3.3 V, AV=1, RL=32 ohm, PO=30 mWrms, f=1 kHz, TA=25 C |
| Power Supply Rejection Ratio | 65 dB typ; VDD=3.3 V, VRIPPLE=200 mVp-p sine wave, input terminated with 10 ohm to ground, f=217 Hz |
| Power Supply Rejection Ratio | 65 dB typ; VDD=3.3 V, VRIPPLE=200 mVp-p sine wave, input terminated with 10 ohm to ground, f=1 kHz |
| Shutdown Input Voltage High | 1.5 V min; VDD=3.3 V, TA=25 C |
| Shutdown Input Voltage Low | 0.4 V max; VDD=3.3 V, TA=25 C |
| Quiescent Power Supply Current | 3.3 mA typ, 6 mA max; VDD=3.0 V, AV=1, 32 ohm load, VIN=0 V, TA=25 C |
| Standby Current | 0.1 uA typ, 1.0 uA max; VDD=3.0 V, SHUTDOWN=GND, TA=25 C |
| Output Offset Voltage | 5 mV typ, 30 mV max; VDD=3.0 V, AV=1, 32 ohm load, TA=25 C |
| Output Power | 30 mW typ, 25 mW min; VDD=3.0 V, AV=1, RL=32 ohm, THD=1% max, f=1 kHz, TA=25 C |
| Total Harmonic Distortion Plus Noise | 0.3% typ; VDD=3.0 V, AV=1, RL=32 ohm, PO=25 mWrms, f=1 kHz, TA=25 C |
| Power Supply Rejection Ratio | 65 dB typ; VDD=3.0 V, VRIPPLE=200 mVp-p sine wave, input terminated with 10 ohm to ground, f=217 Hz |
| Power Supply Rejection Ratio | 65 dB typ; VDD=3.0 V, VRIPPLE=200 mVp-p sine wave, input terminated with 10 ohm to ground, f=1 kHz |
| Shutdown Input Voltage High | 1.5 V min; VDD=3.0 V, TA=25 C |
| Shutdown Input Voltage Low | 0.4 V max; VDD=3.0 V, TA=25 C |
| Quiescent Power Supply Current | 3.0 mA typ; VDD=2.6 V, AV=1, 32 ohm load, VIN=0 V, TA=25 C |
| Standby Current | 0.1 uA typ; VDD=2.6 V, SHUTDOWN=GND, TA=25 C |
| Output Offset Voltage | 5 mV typ; VDD=2.6 V, AV=1, 32 ohm load, TA=25 C |
| Output Power | 13 mW typ; VDD=2.6 V, AV=1, RL=32 ohm, THD=1% max, f=1 kHz, TA=25 C |
| Total Harmonic Distortion Plus Noise | 0.3% typ; VDD=2.6 V, AV=1, RL=32 ohm, PO=10 mWrms, f=1 kHz, TA=25 C |
| Power Supply Rejection Ratio | 55 dB typ; VDD=2.6 V, VRIPPLE=200 mVp-p sine wave, input terminated with 10 ohm to ground, f=217 Hz |
| Power Supply Rejection Ratio | 55 dB typ; VDD=2.6 V, VRIPPLE=200 mVp-p sine wave, input terminated with 10 ohm to ground, f=1 kHz |
| Voltage Gain Stability | Unity-gain stable; general feature |
| Output Coupling Capacitors | Not required; output capacitor-less headphone amplifier topology |
| Half-Supply Bypass Capacitor | Not required; internal buffered bandgap reference bias |
| Headphone Sleeve Reference Voltage | 1.58 V; Amp3 internally applies bandgap referenced voltage to stereo headphone jack sleeve |
| Sleeve Amplifier Protection Threshold | 500 mAPK; if current supplied by headphone sleeve amplifier exceeds threshold, amplifier shuts down |
| Turn-On/Turn-Off Noise Suppression | Advanced pop and click circuitry; eliminates noises during turn-on and turn-off |
| Thermal Protection | Internal thermal shutdown protection; device protection mechanism |
| Datasheet Status | request_only |
Product Overview
The LM4910 is a Texas Instruments stereo headphone amplifier in the Signal_Chain category. It is specified for a 2.2 V to 5.5 V operating supply range, with a 6.0 V absolute maximum supply rating and input voltage limits of -0.3 V to VDD + 0.3 V. Package options listed in the supplied facts are MSOP, LLP, and SOIC, with no package dimensions provided in the excerpt.
At VDD=3.3 V, AV=1, RL=32 ohm, f=1 kHz, and TA=25 C, the device provides 35 mW typical and 30 mW minimum output power at 1% THD maximum. At VDD=3.0 V under the same load and gain conditions, output power is 30 mW typical and 25 mW minimum; at VDD=2.6 V, output power is 13 mW typical.
The amplifier uses an output capacitor-less headphone topology, so output coupling capacitors are not required. An internal buffered bandgap reference bias also removes the need for a half-supply bypass capacitor. The headphone sleeve amplifier applies a 1.58 V reference to the stereo jack sleeve and shuts down if sleeve amplifier current exceeds 500 mAPK.
Protection and system behavior include internal thermal shutdown protection, advanced pop-and-click circuitry for turn-on and turn-off noise suppression, standby current down to 0.1 uA typical, and specified ESD susceptibility ratings for human body and machine model conditions.
Key Features
- 35 mW typical output at 3.3 V into 32 ohm
- 30 mW typical output at 3.0 V into 32 ohm
- 13 mW typical output at 2.6 V into 32 ohm
- 2.2 V to 5.5 V operating supply range
- 65 dB typical PSRR at 3.3 V conditions
- 0.1 uA typical shutdown or standby current
- Unity-gain stable amplifier operation
- Output coupling capacitors are not required
- Half-supply bypass capacitor is not required
- 1.58 V headphone sleeve reference voltage
- 500 mAPK sleeve amplifier protection threshold
- Internal thermal shutdown protection
Typical Applications
- Stereo headphone output stages
- Output capacitor-less headphone designs
- Low-voltage 2.2 V to 5.5 V audio systems
- 32 ohm headphone load applications
- Pop-and-click suppressed turn-on audio paths
- Shutdown-controlled headphone amplifier circuits
- MSOP, LLP, or SOIC audio assemblies
Procurement Notes
When requesting a quote for LM4910, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What supply voltage range does the LM4910 support?
The LM4910 operating supply voltage range is 2.2 V to 5.5 V. Its absolute maximum supply voltage rating is 6.0 V, and input voltage is limited to -0.3 V to VDD + 0.3 V.
How much output power is specified at 3.3 V?
At VDD=3.3 V, AV=1, RL=32 ohm, f=1 kHz, and TA=25 C, the LM4910 output power is specified as 35 mW typical and 30 mW minimum at 1% THD maximum.
Does the LM4910 require output coupling capacitors?
No. The extracted datasheet facts describe the LM4910 as an output capacitor-less headphone amplifier topology, with output coupling capacitors not required. A half-supply bypass capacitor is also not required because of the internal buffered bandgap reference bias.
What protection functions are listed for the LM4910?
The LM4910 includes internal thermal shutdown protection. The headphone sleeve amplifier also shuts down if the current it supplies exceeds the 500 mAPK protection threshold.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 21, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.