Overview
The AD7951BCPZ is a 14-bit, unipolar/bipolar programmable input analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is fabricated using Analog Devices' iCMOS high voltage process and features a successive approximation register (SAR) architecture. It is designed for high-speed data acquisition and offers multiple programmable input ranges and operating modes. The AD7951BCPZ is available in a 48-lead LFCSP (Lead Frame Chip Scale Package) and operates over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Sampling Rate | 1 MSPS (warp mode), 800 kSPS (normal mode), 670 kSPS (impulse mode) | |
| Input Ranges | 5 V, 10 V, ±5 V, ±10 V | |
| Integral Nonlinearity (INL) | ±0.3 LSB typ, ±1 LSB max | |
| Signal to Noise Ratio (SNR) | 85 dB @ 2 kHz | |
| Internal Reference | 5 V, typical drift 3 ppm/°C | |
| Power Dissipation | 10 mW @ 100 kSPS, 235 mW @ 1 MSPS | |
| Package | 48-lead LFCSP (7 mm × 7 mm) | |
| Operating Temperature | −40°C to +85°C |
Key Features
- Multiple pins/software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V
- Throughput of 1 MSPS in warp mode, 800 kSPS in normal mode, and 670 kSPS in impulse mode
- No pipeline delay due to SAR architecture
- Parallel (14- or 8-bit bus) and serial 5 V/3.3 V interface, SPI-/QSPI-/MICROWIRE-/DSP-compatible
- Internal conversion clock and internal reference with buffer
- Error correction circuits and temperature output
Applications
- Process control
- Medical instruments
- High-speed data acquisition
- Digital signal processing
- Instrumentation
- Spectrum analysis
- Automated Test Equipment (ATE)
Q & A
- What is the resolution of the AD7951BCPZ ADC?
The AD7951BCPZ has a 14-bit resolution. - What are the different sampling modes available for the AD7951BCPZ?
The device operates in warp mode (1 MSPS), normal mode (800 kSPS), and impulse mode (670 kSPS). - What are the programmable input ranges for the AD7951BCPZ?
The input ranges are 5 V, 10 V, ±5 V, and ±10 V. - What is the signal to noise ratio (SNR) of the AD7951BCPZ?
The SNR is 85 dB at 2 kHz. - What is the power dissipation of the AD7951BCPZ at different sampling rates?
The power dissipation is 10 mW at 100 kSPS and 235 mW at 1 MSPS. - What is the operating temperature range of the AD7951BCPZ?
The operating temperature range is −40°C to +85°C. - What types of interfaces does the AD7951BCPZ support?
The device supports parallel (14- or 8-bit bus) and serial 5 V/3.3 V interfaces, and is SPI-/QSPI-/MICROWIRE-/DSP-compatible. - Does the AD7951BCPZ have an internal reference?
Yes, it has a 5 V internal reference with a typical drift of 3 ppm/°C. - What is the package type of the AD7951BCPZ?
The device is available in a 48-lead LFCSP (7 mm × 7 mm) package. - What are some common applications of the AD7951BCPZ?
Common applications include process control, medical instruments, high-speed data acquisition, digital signal processing, instrumentation, spectrum analysis, and ATE.
