Overview
The ADA4941-1YCPZ-R7 is a single-supply, differential amplifier designed by Analog Devices Inc. for driving high-resolution analog-to-digital converters (ADCs) up to 18 bits. This amplifier is particularly suited for low-power applications, including battery-operated devices and single-supply data acquisition systems. It is manufactured using Analog Devices' proprietary, second-generation, eXtra fast complementary bipolar (XFCB) process, which enables the amplifier to achieve high performance with low supply currents.
The ADA4941-1YCPZ-R7 is configured in an easy-to-use, single-ended-to-differential configuration and requires no external components for a gain of 2. It offers a wide input voltage range (0 V to 3.9 V on a single 5 V supply), rail-to-rail output, high input impedance, and user-adjustable gain. These features make it ideal for driving 16-bit and 18-bit PulSAR® ADCs such as the AD7687, AD7690, and AD7691.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Range | 2.7 | - | 12 | V |
| Quiescent Current | 2.2 | 2.5 | 2.7 | mA |
| Quiescent Current—Disable | 10 | 15 | 26 | µA |
| Power Supply Rejection Ratio (PSRR) | 86 | 87 | 110 | dB |
| Input Voltage Range | 0 | - | 3.9 | V |
| Output Voltage Swing | VS - 0.25 | - | VS ± 0.14 | V |
| Output Current | - | - | 25 | mA |
| −3 dB Bandwidth (VO = 0.1 V p-p) | 22 | 23 | 32 | MHz |
| Slew Rate (VO = 2 V step) | - | - | 26 | V/µs |
| Settling Time (0.005% VO = 12 V p-p step) | - | - | 980 | ns |
Key Features
- Low Power Consumption: The ADA4941-1YCPZ-R7 operates with a quiescent current of 2.2 mA to 2.7 mA and can be disabled to reduce current to 10 µA to 26 µA.
- Low Noise and High SNR: Designed to provide low distortion and high signal-to-noise ratio (SNR), essential for driving high-resolution ADCs.
- Wide Input Voltage Range: Supports an input voltage range of 0 V to 3.9 V on a single 5 V supply.
- Rail-to-Rail Output: Ensures maximum output swing, making it suitable for a variety of applications.
- User-Adjustable Gain: Allows for gain configurations greater than 2 using a resistive feedback network.
- High Input Impedance: Reduces the load on the input signal source.
- Compact Packaging: Available in 8-lead LFCSP and 8-lead SOIC packages, suitable for space-constrained designs.
- Extended Industrial Temperature Range: Rated to operate from −40°C to +125°C.
Applications
- Data Acquisition Systems: Ideal for single-supply data acquisition systems where low power consumption is critical.
- Battery-Operated Devices: Suitable for battery-powered devices due to its low power consumption and high performance.
- High-Resolution ADCs: Designed to drive 16-bit and 18-bit PulSAR® ADCs such as the AD7687, AD7690, and AD7691.
- Industrial and Medical Devices: Can be used in various industrial and medical applications requiring high precision and low noise.
Q & A
- What is the primary function of the ADA4941-1YCPZ-R7?
The ADA4941-1YCPZ-R7 is a differential amplifier designed to drive high-resolution analog-to-digital converters (ADCs) up to 18 bits.
- What is the operating voltage range of the ADA4941-1YCPZ-R7?
The operating voltage range is from 2.7 V to 12 V.
- What are the typical quiescent current and disable current of the ADA4941-1YCPZ-R7?
The typical quiescent current is 2.5 mA, and the disable current is 15 µA.
- What is the input voltage range of the ADA4941-1YCPZ-R7?
The input voltage range is from 0 V to 3.9 V on a single 5 V supply.
- Can the gain of the ADA4941-1YCPZ-R7 be adjusted?
- What are the available package options for the ADA4941-1YCPZ-R7?
- What is the temperature range of the ADA4941-1YCPZ-R7?
- What types of ADCs is the ADA4941-1YCPZ-R7 ideal for driving?
- What are some typical applications of the ADA4941-1YCPZ-R7?
- How does the ADA4941-1YCPZ-R7 achieve low power consumption?
