Four-channel stereo Class-AB audio amplifier with rail-to-rail output. Features differential input and single-ended output, offering a typical gain bandwidth product of 11 MHz. Housed in a 14-pin SOIC (Small Outline IC) package with gull-wing leads for surface mounting. Operating temperature range from -40 °C to 85 °C.
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Texas Instruments OPA1644AIDR technical specifications.
| Basic Package Type | Lead-Frame SMT |
| Package Family Name | SOP |
| Package/Case | SOIC |
| Package Description | Small Outline IC |
| Lead Shape | Gull-wing |
| Pin Count | 14 |
| PCB | 14 |
| Package Length (mm) | 8.75(Max) |
| Package Width (mm) | 4(Max) |
| Package Height (mm) | 1.5(Max) |
| Seated Plane Height (mm) | 1.75(Max) |
| Pin Pitch (mm) | 1.27 |
| Package Material | Plastic |
| Mounting | Surface Mount |
| Jedec | MS-012AB |
| Function | Speaker |
| Amplifier Type | Class-AB |
| Rail to Rail | Rail to Rail Output |
| Typical PSRR | 137.07dB |
| Input Signal Type | Differential |
| Output Signal Type | Single |
| Output Type | 4-Channel Stereo |
| Maximum Input Bias Current | 0.00002@36VuA |
| Maximum Input Offset Voltage | 3.5@±18VmV |
| Typical Gain Bandwidth Product | 11MHz |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 85°C |
| Cage Code | 01295 |
| EU RoHS | Yes |
| HTS Code | 8542330001 |
| Schedule B | 8542330000 |
| ECCN | EAR99 |
| Automotive | No |
| AEC Qualified | No |
| PPAP | No |
| Radiation Hardening | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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