## AD8617ACPZ-R2: Overview and Technical Specifications The **AD8617ACPZ-R2** is a high-precision, dual-channel, rail-to-rail input and output operational amplifier (Op-Amp) manufactured by **Analog Devices**. It is part of a family known for very low offset voltage, low input bias current, and low power consumption. --- ### 1. Key Features The AD8617 is designed for applications where space and power efficiency are critical. Below are its primary characteristics: * **Low Offset Voltage:** Typically in the microvolt range, ensuring high accuracy in DC measurements. * **Rail-to-Rail Input/Output:** Allows the signal to swing from the negative supply rail to the positive supply rail, maximizing dynamic range. * **Low Power Consumption:** Operates at a very low supply current (approx. 38 μA per amplifier). * **Wide Supply Range:** Can operate from a single supply of 2.7 V to 5.0 V. * **No Reversal:** The device does not suffer from phase reversal when the input exceeds the supply rails. --- ### 2. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Number of Channels** | 2 (Dual) | | **Supply Voltage (Single)** | 2.7 V to 5.0 V | | **Gain Bandwidth Product** | 400 kHz | | **Slew Rate** | 0.1 V/μs | | **Input Offset Voltage** | 500 μV (max) | | **Supply Current per Channel** | 38 μA | | **Package Type** | LFCSP (Lead Frame Chip Scale Package) | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Pin Configuration (LFCSP Package) The "ACPZ" suffix indicates it is housed in a very small 8-lead LFCSP package, which includes an exposed pad for thermal management. | Pin Number | Function | Description | | :--- | :--- | :--- | | 1 | OUT A | Output of Amplifier A | | 2 | -IN A | Inverting Input of Amplifier A | | 3 | +IN A | Non-inverting Input of Amplifier A | | 4 | V- | Negative Supply / Ground | | 5 | +IN B | Non-inverting Input of Amplifier B | | 6 | -IN B | Inverting Input of Amplifier B | | 7 | OUT B | Output of Amplifier B | | 8 | V+ | Positive Power Supply | --- ### 4. Common Applications Due to its low power and high precision, the AD8617ACPZ-R2 is commonly used in: 1. **Battery-Powered Instrumentation:** Handheld devices that require long battery life. 2. **Sensor Interfaces:** Amplifying signals from photodiode sensors or thermistors. 3. **Medical Equipment:** Portable monitoring devices (ECG/EKG). 4. **Current Sensing:** Low-side current monitoring in power management circuits. --- ### 5. Part Number Breakdown * **AD8617:** The base model number. * **ACPZ:** Indicates the package type (LFCSP) and RoHS compliance (Z). * **R2:** Indicates the tape and reel size (usually a 7-inch reel containing 250 units).