Applications Photodiode amplifier Sensor amplifier Portable instrumentation Portable medical devices Portable audio: MP3, PDA, smart phone, notebook Headphone speaker driver Communications Low-side current sense ADC driver Active filter Sample-and-hold Automotive sensors
The ADA4691-4 is a quad rail-to-rail output, single-supply amplifier featuring low power, wide bandwidth, and low noise. The ADA4691-4 has two independent shutdown pins, allowing further reduction in supply current. These amplifiers are ideal for a wide variety of applications. Audio preamps, filters, IR/photodiode amplifiers, charge amps, and high impedance sensors all benefit from this combination of performance features. The ADA4692-4 is a quad version without shutdown in a 14-lead TSSOP package.
Applications for these amplifiers include consumer audio personal players with low noise and low distortion that provide enough gain and slew rate response over the audio band at low power. Industrial applications with high impedance sensors, such as pyroelectric sensors and other IR sensors, benefit from the high impedance input, low offset drift, and enough band-width and response for low gain applications.
The ADA4691-4 is specified over the extended industrial temperature range (−40°C to +125°C). The ADA4691-4 is available in a 16-lead LFCSP packages.
Features and Benefits0.5 pA typical to ±2.5 V dual supply LFCSP packages | Amplifiers |
| Document | note |
| Low Power, 3.6 MHz, Low Noise, Rail-to-Rail Output, Operational Amplifiers (Rev. D) | PDF 699 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADA4691-4ACPZ-R2 Production | 16 ld LFCSP (3x3mm, 1.6mm exposed pad) | REEL 250 | -40 to 125C | 1.63 | 1.63 | Y |
| ADA4691-4ACPZ-R7 Production | 16 ld LFCSP (3x3mm, 1.6mm exposed pad) | REEL 1500 | -40 to 125C | 0 | 0.9 | Y |
| ADA4691-4ACPZ-RL Production | 16 ld LFCSP (3x3mm, 1.6mm exposed pad) | REEL 5000 | -40 to 125C | 0 | 0.9 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-PRAOPAMP-4RUZ | QUAD 14-Lead TSSOP Evaluation Board | 20.19 | Y |
| EVAL-PRAOPAMP-4RZ | QUAD R-14 lead SOIC Evaluation Board | 20.19 | Y |
