Overview
The AD7946BCPZRL is a 14-bit, successive approximation, analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V power supply and is designed for high-speed, low-power applications. It features a charge redistribution architecture with no missing codes and includes an internal conversion clock and a versatile serial interface port. The ADC also includes a low noise, wide bandwidth, short aperture delay track-and-hold circuit, making it suitable for various precision measurement applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Throughput | 500 kSPS | |
| Integral Nonlinearity (INL) | ±0.4 LSB (typical), ±1 LSB (maximum) | |
| Signal-to-Noise and Distortion Ratio (SINAD) | 85 dB at 20 kHz | |
| Total Harmonic Distortion (THD) | -100 dB at 20 kHz | |
| Analog Input Range | 0 V to REF (up to VDD) | V |
| Power Supply | Single 5 V | V |
| Logic Interface | 1.8 V/2.5 V/3 V/5 V | V |
| Power Dissipation | 3.3 mW at 5 V/100 kSPS, 3.3 µW at 5 V/100 SPS | mW/µW |
| Standby Current | 1 nA | A |
| Package Type | 10-lead MSOP or 10-lead LFCSP |
Key Features
- No missing codes and high accuracy with ±0.4 LSB typical INL.
- High-speed throughput of 500 kSPS.
- Low power consumption: 3.3 mW at 5 V/100 kSPS and 3.3 µW at 5 V/100 SPS.
- Pseudo differential analog input range from 0 V to REF (up to VDD).
- No pipeline delay and on-chip track-and-hold circuit.
- Versatile serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Daisy-chain capability and BUSY indicator.
- Pin-for-pin compatible with the 16-bit AD7686.
Applications
- Battery-powered equipment.
- Data acquisition systems.
- Instrumentation.
- Medical instruments.
- Process control systems.
Q & A
- What is the resolution of the AD7946BCPZRL ADC?
The AD7946BCPZRL has a 14-bit resolution.
- What is the maximum throughput of the AD7946BCPZRL?
The maximum throughput is 500 kSPS.
- What is the typical power consumption of the AD7946BCPZRL at 100 kSPS?
The typical power consumption is 3.3 mW at 5 V/100 kSPS.
- What is the analog input range of the AD7946BCPZRL?
The analog input range is from 0 V to REF (up to VDD).
- Does the AD7946BCPZRL have any pipeline delay?
No, the AD7946BCPZRL does not exhibit any pipeline delay.
- What types of packages are available for the AD7946BCPZRL?
The AD7946BCPZRL is available in 10-lead MSOP and 10-lead LFCSP packages.
- Is the AD7946BCPZRL compatible with other ADC models?
Yes, it is pin-for-pin compatible with the 16-bit AD7686.
- What is the standby current of the AD7946BCPZRL?
The standby current is 1 nA.
- What are the typical applications of the AD7946BCPZRL?
Typical applications include battery-powered equipment, data acquisition, instrumentation, medical instruments, and process control systems.
- What is the logic interface voltage range for the AD7946BCPZRL?
The logic interface can operate with 1.8 V, 2.5 V, 3 V, or 5 V digital logic.
