Overview
The AD7944BCPZ-RL7, produced by Analog Devices Inc., is a high-performance, 14-bit successive approximation analog-to-digital converter (SAR ADC). This component is designed for low power consumption and high-speed operation, making it suitable for a variety of applications requiring precise and efficient analog-to-digital conversion. The AD7944BCPZ-RL7 features a compact 20-lead Lead Frame Chip Scale Package (LFCSP) and supports a wide range of digital logic families.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14-bit |
| Sampling Rate | 2.5 MSPS (TURBO high), 2.0 MSPS (TURBO low) |
| Power Dissipation | 15.5 mW at 2.5 MSPS (external reference), 28 mW at 2.5 MSPS (internal reference) |
| Integral Nonlinearity (INL) | ±0.25 LSB typical, ±1.0 LSB maximum |
| Signal to Noise Ratio (SNR) | 84 dB (on-chip reference), 84.5 dB (external reference) |
| Analog Input Voltage Range | 0 V to VREF (up to 5.0 V) |
| Supply Voltage | 2.375V to 2.625V (analog and digital) |
| Package Type | 20-lead LFCSP (QFN) |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- High-speed conversion with no pipeline delay or latency, ideal for multiplexed channel applications.
- Low power consumption with flexible power modes.
- Pseudo differential analog input voltage range up to 5.0 V.
- Internal reference with a typical drift of ±10 ppm/°C.
- Compatible with 1.8 V to 2.7 V digital logic families.
- Proprietary serial interface supporting SPI, QSPI, MICROWIRE, and DSP.
- Ability to daisy-chain multiple ADCs with a busy indicator.
Applications
- Battery-powered equipment.
- Communications.
- Automatic Test Equipment (ATE).
- Data acquisition systems.
- Medical instruments.
Q & A
- What is the resolution of the AD7944BCPZ-RL7?
The AD7944BCPZ-RL7 has a 14-bit resolution. - What are the sampling rates of the AD7944BCPZ-RL7?
The sampling rates are 2.5 MSPS (TURBO high) and 2.0 MSPS (TURBO low). - What is the power dissipation of the AD7944BCPZ-RL7?
The power dissipation is 15.5 mW at 2.5 MSPS with an external reference and 28 mW at 2.5 MSPS with an internal reference. - What is the integral nonlinearity (INL) of the AD7944BCPZ-RL7?
The INL is ±0.25 LSB typical and ±1.0 LSB maximum. - What is the signal to noise ratio (SNR) of the AD7944BCPZ-RL7?
The SNR is 84 dB with an on-chip reference and 84.5 dB with an external reference. - What is the analog input voltage range of the AD7944BCPZ-RL7?
The analog input voltage range is from 0 V to VREF (up to 5.0 V). - What is the supply voltage range for the AD7944BCPZ-RL7?
The supply voltage range is 2.375V to 2.625V for both analog and digital supplies. - What package type does the AD7944BCPZ-RL7 use?
The package type is a 20-lead LFCSP (QFN). - What is the operating temperature range of the AD7944BCPZ-RL7?
The operating temperature range is -40°C to +85°C. - Is the AD7944BCPZ-RL7 compatible with different digital logic families?
Yes, it is compatible with 1.8 V to 2.7 V digital logic families.
