| PartNumber | OPA1644AID | OPA1644AIPW | OPA1644AIDR |
| Description | Audio Amplifiers SoundPLUS Hi-Perf JFET-In Audio OpAmps | Audio Amplifiers High-Perf,JFET-Inp Audio Op Amps | Audio Amplifiers SoundPLUS Hi-Perf JFET-In Audio OpAmps |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Audio Amplifiers | Audio Amplifiers | Audio Amplifiers |
| RoHS | Y | Y | Y |
| Series | OPA1644 | OPA1644 | OPA1644 |
| Product | Audio Amplifiers | Audio Amplifiers | Audio Amplifiers |
| Output Power | - | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Type | 4-Channel Rail-to-Rail | 4-Channel Rail-to-Rail | 4-Channel Rail-to-Rail |
| Package / Case | SOIC-14 | TSSOP-14 | SOIC-14 |
| THD plus Noise | 0.00005 % | 0.00005 % | 0.00005 % |
| Supply Voltage Max | 18 V | 18 V | 18 V |
| Supply Voltage Min | 2.25 V | 2.25 V | 2.25 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tube | Tube | Reel |
| Features | Burr-Brown Audio, Premium Sound | Burr-Brown Audio, Premium Sound | Burr-Brown Audio, Premium Sound |
| Input Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 4 Channel | 4 Channel | 4 Channel |
| CMRR Common Mode Rejection Ratio | 120 dB to 126 dB | 120 dB to 126 dB | 120 dB to 126 dB |
| GBP Gain Bandwidth Product | 11 MHz | 11 MHz | 11 MHz |
| Ib Input Bias Current | 20 pA | 20 pA | 20 pA |
| Moisture Sensitive | Yes | Yes | Yes |
| Operating Supply Current | 1.8 mA | 1.8 mA | 1.8 mA |
| Operating Supply Voltage | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V |
| Product Type | Audio Amplifiers | Audio Amplifiers | Audio Amplifiers |
| SR Slew Rate | 20 V/us | 20 V/us | 20 V/us |
| Factory Pack Quantity | 50 | 90 | 2500 |
| Subcategory | Audio ICs | Audio ICs | Audio ICs |
| Vos Input Offset Voltage | 3.5 mV | 3.5 mV | 3.5 mV |
| Unit Weight | 0.011923 oz | 0.004949 oz | 0.011923 oz |