The **ADL5724ACPZN-R7** is a high-performance, fixed-gain differential amplifier manufactured by Analog Devices. It is specifically designed to function as an intermediate frequency (IF) gain block, often used to drive high-speed Analog-to-Digital Converters (ADCs). --- ### ## Technical Specifications Overview The following table summarizes the primary electrical characteristics of the ADL5724: | Feature | Specification | | :--- | :--- | | **Type** | Differential Amplifier (Fixed Gain) | | **Operating Frequency** | 30 MHz to 1.1 GHz | | **Fixed Gain** | 12.5 dB | | **Supply Voltage** | 4.75 V to 5.25 V | | **Current Consumption** | ~92 mA | | **Output IP3** | 47 dBm at 200 MHz | | **Noise Figure** | 7.2 dB | | **Package** | 24-Lead LFCSP (4mm x 4mm) | --- ### ### Key Electronic Components & Features 1. **Internal Architecture**: The device features a balanced differential structure. This design is critical for suppressing common-mode noise and reducing second-order harmonic distortion, which is essential when interfacing with differential input ADCs. 2. **Input/Output Matching**: The inputs are internally matched to $50\ \Omega$ (differential $100\ \Omega$). This simplifies the PCB design as it minimizes the need for external passive tuning components. 3. **Broadband Performance**: While optimized for the 30 MHz to 1.1 GHz range, it maintains excellent linearity (OIP3) across its bandwidth, ensuring that the signal integrity of complex modulation schemes (like QAM) is preserved. 4. **Power Dissipation Control**: The "ACPZN" designation refers to the Lead Frame Chip Scale Package (LFCSP). The exposed pad on the bottom of the chip is not just an electrical ground; it is a vital thermal path to dissipate the heat generated by the ~460mW power consumption. --- ### ### Pin Configuration (Partial Highlights) | Pin No. | Name | Description | | :--- | :--- | :--- | | 1, 2, 11, 12 | INHI / INLO | Differential RF Inputs | | 5, 8 | VPOS | Positive Supply Voltage (5V) | | 17, 20 | OUTLO / OUTHI | Differential RF Outputs | | EP | Exposed Pad | Must be soldered to Ground for thermal/electrical stability | --- ### ### Typical Application Circuit When integrating this part into a circuit, AC-coupling capacitors are required at the inputs and outputs to prevent DC bias from interfering with the internal circuitry of the ADL5724 or the subsequent ADC. ```markdown [Signal Source] --> [AC Cap] --> [ADL5724 (IN)] | [ADL5724 (OUT)] --> [AC Cap] --> [ADC Input] ``` ---