Overview
The AD8432ACPZ-R7, produced by Analog Devices Inc., is a dual-channel, low power, ultralow noise amplifier. It features selectable gain and active impedance matching, making it highly suitable for high-speed applications. Each channel of the AD8432 has a single-ended input, differential output, and integrated input clamps. The amplifier can be configured for four accurate gains (12.04 dB, 18.06 dB, 21.58 dB, and 24.08 dB) by pin strapping the gain setting pins. Its exceptional noise performance, achieved through active impedance matching, allows for the detection of very low-level signals and is ideal for applications such as high-performance ultrasound systems and I/Q demodulator signal processing.
Key Specifications
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Supply Voltage | 4.5 V | 5 V | 5.5 V |
| Quiescent Current (ENB = 5 V) | - | 24 mA | - |
| Operating Temperature | -40°C | - | +85°C |
| Input-Referred Voltage Noise (G = 12.04 dB) | - | 0.85 nV/√Hz | - |
| Bandwidth (G = 12.04 dB) | - | 200 MHz | - |
| Output Voltage Swing | - | 4.8 V p-p | - |
| Output Resistance (Single-ended) | - | <0.1 Ω | - |
| Package Type | - | 24-Lead LFCSP (4mm x 4mm w/ EP) | - |
Key Features
- Dual-channel, low power, ultralow noise amplifier
- Selectable gain: 12.04 dB, 18.06 dB, 21.58 dB, and 24.08 dB
- Active impedance matching for optimal noise performance
- Single-ended input, differential output, and integrated input clamps
- Low thermal resistance path to the PCB via exposed paddle in LFCSP package
- Ultralow noise: 0.85 nV/√Hz input-referred voltage noise at G = 12.04 dB
- Low distortion and high gain accuracy
- Channel-to-channel matching for high-performance applications
Applications
- High-performance ultrasound systems
- I/Q demodulator signal processing
- High-speed data acquisition systems
- Medical imaging and diagnostic equipment
- Communication systems requiring low noise and high gain accuracy
Q & A
- What is the AD8432ACPZ-R7?
The AD8432ACPZ-R7 is a dual-channel, low power, ultralow noise amplifier with selectable gain and active impedance matching, produced by Analog Devices Inc.
- What are the available gain settings for the AD8432?
The AD8432 can be configured for four accurate gains: 12.04 dB, 18.06 dB, 21.58 dB, and 24.08 dB.
- What is the input-referred voltage noise of the AD8432 at a gain of 12.04 dB?
The input-referred voltage noise is 0.85 nV/√Hz at a gain of 12.04 dB.
- What is the bandwidth of the AD8432 at a gain of 12.04 dB?
The bandwidth is 200 MHz at a gain of 12.04 dB.
- What type of package does the AD8432 come in?
The AD8432 comes in a 24-Lead LFCSP (4mm x 4mm w/ EP) package.
- What is the operating temperature range of the AD8432?
The operating temperature range is -40°C to +85°C.
- What are some typical applications of the AD8432?
Typical applications include high-performance ultrasound systems, I/Q demodulator signal processing, and high-speed data acquisition systems.
- How does the AD8432 achieve its exceptional noise performance?
The AD8432 achieves its exceptional noise performance through active impedance matching using a feedback network.
- What is the quiescent current of the AD8432 when enabled?
The quiescent current is 24 mA when enabled (ENB = 5 V).
- Does the AD8432 have integrated input clamps?
Yes, the AD8432 has integrated input clamps.
