The **AMP04FSZ-R7** is a high-precision instrumentation amplifier (In-Amp) manufactured by Analog Devices. It is designed for low-power, single-supply applications where accuracy and space-efficiency are critical. --- ### ## Technical Specifications The following table highlights the primary electrical characteristics of the AMP04FSZ-R7: | Parameter | Specification | | :--- | :--- | | **Gain Range** | 1 to 1,000 (Set by one external resistor) | | **Supply Voltage** | 5V to 15V (Single) or ±2.5V to ±7.5V (Dual) | | **Supply Current** | 700 µA (Max) | | **Input Offset Voltage** | 150 µV (Max) | | **Gain Temp. Coefficient** | 10 ppm/°C | | **Package Type** | 8-Lead SOIC (Small Outline Integrated Circuit) | | **Input Impedance** | 4 GΩ (Gigohms) | --- ### ## Key Features & Components #### 1. Single Resistor Gain Setting Unlike operational amplifiers that require multiple resistors to set gain, the AMP04 uses a single external resistor ($R_G$). The gain ($G$) is determined by the formula: $$G = \frac{100\text{ k}\Omega}{R_G} + 1$$ #### 2. Rail-to-Rail Output The output can swing close to the supply rails, which is essential for maximizing dynamic range in low-voltage systems (like 5V logic). #### 3. High Common-Mode Rejection (CMR) It is highly effective at filtering out noise common to both input terminals (such as 60Hz hum), which is vital for sensor applications. #### 4. Low Power Consumption With a maximum current draw of 700 µA, it is ideal for battery-operated handheld devices. --- ### ## Common Applications * **Bridge Transducers:** Used for strain gauges, pressure sensors, and load cells. * **Thermocouple Amplifiers:** Precision temperature measurement. * **Medical Instrumentation:** ECG and patient monitoring equipment. * **Data Acquisition:** Conditioning signals for Analog-to-Digital Converters (ADCs). --- ### ## Pin Configuration (8-SOIC) ```text +---U---+ -IN | 1 8 | RG +IN | 2 7 | V+ V- | 3 6 | OUTPUT RG | 4 5 | REF +-------+ ``` ---