Overview
The OPA695IDRG4, produced by Texas Instruments, is a high-bandwidth, current-feedback operational amplifier. It combines an exceptional 4300 V/μs slew rate and low input voltage noise to deliver a precision, low-cost, high dynamic range intermediate frequency (IF) amplifier. This device is optimized for high gain operation and is particularly suited for buffering surface acoustic wave (SAW) filters in IF strips or delivering high output power at low distortion for cable-modem upstream line drivers. The OPA695IDRG4 also features a low supply current of 12.9 mA, precisely trimmed at +25°C, and an optional disable control pin that reduces power consumption to less than 170 μA when activated.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Bandwidth (G = +1) | 1700 | MHz |
| Bandwidth (G = +8) | 450 | MHz |
| Large-Signal Bandwidth (G = +8, VO = 4VPP) | 450 | MHz |
| Slew Rate | 4300 | V/μs |
| Output Voltage Swing | ±4.2 | V |
| Supply Current (Typical) | 12.9 | mA |
| Disabled Power | 0.5 | mW |
| Operating Temperature Range | -40 to +85 | °C |
| Package Type | SOIC-8 | |
| Thermal Resistance (θJA) | 125 | °C/W |
Key Features
- Ultra-high bandwidth: Up to 1700 MHz at a gain of +1 and 450 MHz at a gain of +8.
- Exceptional slew rate: 4300 V/μs, enabling high-speed signal processing.
- Low input voltage noise: 1.8 nV/√Hz at 1 kHz.
- High output voltage swing: ±4.2 V, suitable for high-power applications.
- Low power consumption: 129 mW typical, with an optional disable feature reducing power to 0.5 mW.
- Compact packaging: Available in SOIC-8, VSSOP-8, and SOT23-6 packages).
- High third-order intercept: > 40 dBm (f < 50 MHz), indicating good linearity.
Applications
- Very wideband ADC drivers: Suitable for high-speed analog-to-digital conversion.
- Low-cost precision IF amplifiers: Ideal for intermediate frequency amplification in various communication systems).
- Broadband video line drivers: Supports high-resolution RGB applications with high bandwidth requirements).
- Portable instruments: Low power and compact packaging make it suitable for portable devices).
- Active filters: Can be used in active filter circuits due to its high bandwidth and low noise characteristics).
- ARB waveform output drivers: Suitable for generating arbitrary waveforms in high-speed applications).
Q & A
- What is the maximum bandwidth of the OPA695IDRG4 at a gain of +1?
The maximum bandwidth at a gain of +1 is 1700 MHz.
- What is the slew rate of the OPA695IDRG4?
The slew rate is 4300 V/μs.
- What is the output voltage swing of the OPA695IDRG4?
The output voltage swing is ±4.2 V.
- How much power does the OPA695IDRG4 consume in normal operation?
The typical power consumption is 129 mW.
- What is the power consumption when the disable feature is activated?
The power consumption drops to less than 0.5 mW when the disable feature is activated.
- What are the available package types for the OPA695IDRG4?
The OPA695IDRG4 is available in SOIC-8, VSSOP-8, and SOT23-6 packages.
- What is the operating temperature range of the OPA695IDRG4?
The operating temperature range is -40°C to +85°C.
- What is the typical supply current of the OPA695IDRG4?
The typical supply current is 12.9 mA.
- What is the thermal resistance (θJA) of the SOIC-8 package?
The thermal resistance (θJA) for the SOIC-8 package is 125°C/W.
- What are some common applications of the OPA695IDRG4?
Common applications include very wideband ADC drivers, low-cost precision IF amplifiers, broadband video line drivers, portable instruments, active filters, and ARB waveform output drivers.
