The **AD8295ACPZ-R7** is a high-precision, multi-functional instrumentation amplifier (In-Amp) manufactured by Analog Devices. It is unique because it integrates a high-performance instrumentation amplifier with two additional uncommitted operational amplifiers and two precision matched resistors in a single compact package. --- ### 1. Key Internal Components The AD8295 is designed as a "system-on-a-chip" for signal conditioning. | Component | Quantity | Description | | :--- | :---: | :--- | | **Instrumentation Amp** | 1 | High-precision, low-noise core based on the industry-standard AD8221. | | **Operational Amps** | 2 | Low-noise, rail-to-rail output op-amps for filtering or buffering. | | **Matched Resistors** | 2 | 10 kΩ precision resistors used for gain setting or level shifting. | --- ### 2. Technical Specifications Below are the critical electrical characteristics of the AD8295ACPZ-R7: | Parameter | Value / Range | | :--- | :--- | | **Supply Voltage** | ±2.3 V to ±18 V (Dual) or 4.6 V to 36 V (Single) | | **Gain Range** | 1 to 1000 (Set by one external resistor) | | **CMRR** | 120 dB (Minimum, G = 100) | | **Input Offset Voltage** | 60 µV (Maximum) | | **Bandwidth (-3dB)** | 1 MHz (at G = 1) | | **Package Type** | 16-lead LFCSP (4mm x 4mm) | | **Operating Temp** | -40°C to +125°C | --- ### 3. Functional Applications The inclusion of the extra op-amps and resistors allows for complex signal processing without requiring extra board space. Common use cases include: * **Active Filtering:** Using the two op-amps to create a 3rd-order low-pass filter after the amplification stage. * **Differential Output:** Converting the single-ended output of the In-Amp into a differential signal for high-resolution ADCs. * **Bridge Powering:** One op-amp can be used to provide a stable reference voltage or drive a sensor bridge. ### 4. Part Number Breakdown: `AD8295ACPZ-R7` * **AD8295**: Base Model Number. * **A**: Performance Grade (Standard). * **CP**: Package Indicator (LFCSP - Lead Frame Chip Scale Package). * **Z**: RoHS Compliant (Pb-free). * **R7**: Tape and Reel packaging (7-inch reel, typically 1,500 units). --- ### 5. Pinout Overview (Simplified) The 16-lead LFCSP package is highly dense. * **Pins 1-4:** Inputs and Gain setting for the main In-Amp. * **Pins 5-8:** Op-Amp A inputs and output. * **Pins 9-12:** Op-Amp B inputs and output. * **Pins 13-16:** Power supply and matched resistor terminals.