The **ADM7160ACPZN2.5-R2** is a specialized electronic component manufactured by Analog Devices. It belongs to the category of **Ultralow Noise, High PSRR (Power Supply Rejection Ratio), Linear Regulators (LDO)**. Below is a detailed breakdown of its specifications, pinout, and key features. --- ### 1. General Specifications The ADM7160 series is designed for high-performance analog and mixed-signal circuits where power supply noise must be minimized. | Parameter | Value / Specification | | :--- | :--- | | **Fixed Output Voltage** | 2.5 V | | **Input Voltage Range** | 2.2 V to 5.5 V | | **Maximum Output Current** | 200 mA | | **Package Type** | LFCSP (Lead Frame Chip Scale Package) | | **Pin Count** | 6-Lead | | **Low Noise** | 3 μV rms (100 Hz to 100 kHz) | | **PSRR** | 54 dB at 100 kHz | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Key Electronic Features * **Ultralow Noise:** Essential for powering sensitive RF components, VCOs (Voltage Controlled Oscillators), and high-precision ADCs. * **High PSRR:** Effectively filters out ripples and noise from upstream switching power supplies. * **Small Footprint:** The 2mm x 2mm LFCSP package makes it ideal for space-constrained applications like smartphones or wearables. * **Enable Function:** Includes an active-high enable pin (EN) that allows the device to be shut down to save power (typically <1 μA in shutdown mode). * **Stability:** Optimized for use with small, low-ESR ceramic capacitors (as small as 1 μF). --- ### 3. Pin Configuration (6-Lead LFCSP) While you should always consult the official datasheet for PCB layout, the standard pinout for this package is typically: | Pin No. | Mnemonic | Description | | :--- | :--- | :--- | | 1 | **VIN** | Regulator Input Supply. | | 2 | **GND** | Ground Reference. | | 3 | **EN** | Enable Input. Drive high to turn on the regulator. | | 4 | **VOUT** | Regulated Output Voltage (2.5V). | | 5 | **NC** | No Connect (Leave floating). | | 6 | **SENSE/SS** | Output Voltage Sense or Soft Start (depending on specific model variant). | | EP | **Exposed Pad** | Should be soldered to the PCB ground plane for thermal dissipation. | --- ### 4. Typical Application Circuit The circuit requires minimal external components to function correctly: ```text [Input 2.2V-5.5V] ----+----[ VIN ] [ VOUT ]----+---- [Output 2.5V] | | [C_in] [C_out] (1uF) (1uF) | [ GND ] | Ground ---------------+------------+--------------+----- Ground ``` --- ### 5. Part Number Decoding * **ADM7160:** Model Series (Ultralow Noise LDO). * **ACPZ:** Package indicator (LFCSP - RoHS Compliant). * **N:** Additional feature indicator (Fixed output). * **2.5:** Fixed output voltage of 2.5 Volts. * **R2:** Reel size/quantity (typically indicates a small 250-piece or 7-inch reel).