Overview
The AD8476ACPZ-R7, produced by Analog Devices Inc., is a low power, fully differential precision amplifier designed to drive high-performance analog-to-digital converters (ADCs). This amplifier is ideal for applications requiring high accuracy and low power consumption. It features integrated gain resistors for unity gain, making it suitable for single-ended-to-differential or differential-to-differential signal conversion. The AD8476 is characterized by its low harmonic distortion, high precision, and ability to operate over a wide temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VS = ±5 V | 3 | - | 18 | V |
| Supply Current | VS = +5 V, TA = 25°C | 300 | 330 | 400 | μA |
| Supply Current | VS = ±5 V, TA = 25°C | 330 | 380 | 500 | μA |
| Temperature Range | - | -40 | - | 125 | °C |
| Gain Bandwidth Product (GBP) | - | - | 6 | - | MHz |
| Slew Rate (SR) | - | - | 10 | - | V/μs |
| Common Mode Rejection Ratio (CMRR) | - | - | 80 | - | dB |
| Output Offset | - | - | 200 | - | μV |
| Noise | - | - | 39 | - | nV/√Hz |
| Total Harmonic Distortion + Noise (THD + N) | At 10 kHz | - | - | -102 | dB |
Key Features
- Very low power consumption with a supply current of 330 μA at 5 V supply.
- Extremely low harmonic distortion: −126 dB HD2 and −128 dB HD3 at 10 kHz.
- Fully differential or single-ended inputs and outputs, with differential output designed to drive precision ADCs.
- High precision with 200 μV maximum output offset and 39 nV/√Hz noise.
- Ability to drive switched capacitor and Σ-Δ ADCs with minimal error.
- Overvoltage protection up to ±23 V while operating on a dual 5 V supply.
- Rail-to-rail outputs for maximum dynamic range.
- Available in space-saving 16-lead LFCSP and 8-lead MSOP packages).
Applications
The AD8476ACPZ-R7 is ideal for various applications requiring high precision and low power consumption, including:
- Driving low power, high performance ADCs such as SAR, Σ-Δ, and pipeline converters).
- Single-ended-to-differential or differential-to-differential signal conversion).
- Industrial and medical devices where precision and low power are critical).
Q & A
- What is the primary function of the AD8476ACPZ-R7?
The AD8476ACPZ-R7 is a fully differential precision amplifier designed to drive high-performance analog-to-digital converters (ADCs)).
- What is the typical supply current of the AD8476ACPZ-R7?
The typical supply current is 330 μA at a 5 V supply).
- What is the temperature range for the AD8476ACPZ-R7?
The AD8476ACPZ-R7 is fully specified over the −40°C to +125°C temperature range).
- What is the gain bandwidth product (GBP) of the AD8476ACPZ-R7?
The gain bandwidth product (GBP) is 6 MHz).
- What is the slew rate of the AD8476ACPZ-R7?
The slew rate is 10 V/μs).
- What is the common mode rejection ratio (CMRR) of the AD8476ACPZ-R7?
The common mode rejection ratio (CMRR) is 80 dB).
- What is the maximum output offset of the AD8476ACPZ-R7?
The maximum output offset is 200 μV).
- What types of ADCs can the AD8476ACPZ-R7 drive?
The AD8476ACPZ-R7 can drive SAR, Σ-Δ, and pipeline converters).
- What are the available package options for the AD8476ACPZ-R7?
The AD8476ACPZ-R7 is available in 16-lead LFCSP and 8-lead MSOP packages).
- Does the AD8476ACPZ-R7 offer overvoltage protection?
Yes, it offers overvoltage protection up to ±23 V while operating on a dual 5 V supply).
