Overview
The ADA4941-1YRZ, manufactured by Analog Devices Inc., is a single-supply, differential, 18-bit ADC driver. This component is designed to drive high-resolution analog-to-digital converters (ADCs), particularly the 16-bit and 18-bit PulSAR® ADCs such as the AD7687, AD7690, and AD7691. It offers low distortion, high signal-to-noise ratio (SNR), and a wide input voltage range, making it suitable for various low-power applications, including battery-operated devices and single-supply data acquisition systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | - | - | 12 | V |
| Quiescent Current | 2.2 | 2.4 | - | mA |
| Quiescent Current (Disabled) | 10 | - | 16 | µA |
| Power Supply Rejection Ratio (PSRR) | 86 | - | 110 | dB |
| Input Voltage Range | 0 | - | 3.9 | V |
| Input Impedance | - | - | 24 M | Ω |
| -3 dB Bandwidth (VO = 0.1 V p-p) | 22 | 31 | - | MHz |
| Slew Rate (VO = 2 V step) | - | - | 26 | V/µs |
| Settling Time (0.005% for a 2 V step) | - | - | 980 | ns |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package | - | - | SOIC-8 | - |
Key Features
- Single-supply operation with a wide input voltage range (0 V to 3.9 V on a single 5 V supply).
- Rail-to-rail output and high input impedance (24 MΩ).
- User-adjustable gain with a simple resistive feedback network.
- Low distortion and high SNR, essential for driving high-resolution ADCs.
- Low power consumption: 2.2 mA quiescent current on a 5 V supply.
- High speed: 31 MHz -3 dB bandwidth and fast settling time (980 ns to 0.005% for a 2 V step).
- Available in small 8-lead LFCSP and standard 8-lead SOIC packages.
Applications
- Single-supply data acquisition systems.
- Battery-operated devices.
- Instrumentation and process control systems.
- Medical instrumentation.
Q & A
- What is the ADA4941-1YRZ used for?
The ADA4941-1YRZ is used as a differential driver for high-resolution analog-to-digital converters (ADCs), particularly in low-power applications such as battery-operated devices and single-supply data acquisition systems.
- What is the input voltage range of the ADA4941-1YRZ?
The input voltage range of the ADA4941-1YRZ is from 0 V to 3.9 V on a single 5 V supply.
- What is the quiescent current of the ADA4941-1YRZ?
The quiescent current of the ADA4941-1YRZ is 2.2 mA to 2.4 mA.
- What is the -3 dB bandwidth of the ADA4941-1YRZ?
The -3 dB bandwidth of the ADA4941-1YRZ is 22 MHz to 31 MHz for VO = 0.1 V p-p.
- What is the slew rate of the ADA4941-1YRZ?
The slew rate of the ADA4941-1YRZ is 26 V/µs for a 2 V step.
- What are the typical applications of the ADA4941-1YRZ?
Typical applications include single-supply data acquisition systems, instrumentation, process control, battery-power systems, and medical instrumentation.
- What package types are available for the ADA4941-1YRZ?
The ADA4941-1YRZ is available in 8-lead LFCSP and standard 8-lead SOIC packages.
- What is the operating temperature range of the ADA4941-1YRZ?
The operating temperature range of the ADA4941-1YRZ is from -40°C to +85°C.
- How does the ADA4941-1YRZ achieve high performance on low supply currents?
The ADA4941-1YRZ achieves high performance on low supply currents due to Analog Devices' proprietary, second-generation, eXtra fast complementary bipolar (XFCB) process.
- What is the power supply rejection ratio (PSRR) of the ADA4941-1YRZ?
The power supply rejection ratio (PSRR) of the ADA4941-1YRZ is 86 dB to 110 dB.
