Overview
The AD7951BSTZ is a 14-bit, unipolar/bipolar programmable input analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is fabricated on 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 input ranges and operating modes. The AD7951BSTZ is available in a 48-lead Low Profile Quad Flat Package (LQFP) and operates over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Throughput | 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, drift: 3 ppm/°C | |
| Power Dissipation | 10 mW @ 100 kSPS, 235 mW @ 1 MSPS | |
| Package | 48-Lead Low Profile Quad Flat Package (LQFP) | |
| Operating Temperature | −40°C to +85°C |
Key Features
- Multiple pins/software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V
- Throughput modes: warp mode (1 MSPS), normal mode (800 kSPS), and impulse mode (670 kSPS)
- 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 interface
- Internal conversion clock and internal reference with buffer
- Error correction circuits
- TEMP output for temperature sensing
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 AD7951BSTZ ADC?
The AD7951BSTZ has a 14-bit resolution.
- What are the different throughput modes of the AD7951BSTZ?
The AD7951BSTZ operates in three throughput modes: warp mode (1 MSPS), normal mode (800 kSPS), and impulse mode (670 kSPS).
- What are the programmable input ranges of the AD7951BSTZ?
The AD7951BSTZ has programmable input ranges of 5 V, 10 V, ±5 V, and ±10 V.
- What is the operating temperature range of the AD7951BSTZ?
The AD7951BSTZ operates over a temperature range of −40°C to +85°C.
- Does the AD7951BSTZ have an internal reference?
Yes, the AD7951BSTZ has an internal 5 V reference with a drift of 3 ppm/°C.
- What types of interfaces does the AD7951BSTZ support?
The AD7951BSTZ supports parallel (14- or 8-bit bus) and serial 5 V/3.3 V interfaces, and is compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
- What is the power dissipation of the AD7951BSTZ at different throughput rates?
The power dissipation is 10 mW @ 100 kSPS and 235 mW @ 1 MSPS.
- What are some common applications of the AD7951BSTZ?
Common applications include process control, medical instruments, high-speed data acquisition, digital signal processing, instrumentation, spectrum analysis, and automated test equipment (ATE).
- What package type is the AD7951BSTZ available in?
The AD7951BSTZ is available in a 48-Lead Low Profile Quad Flat Package (LQFP).
- Does the AD7951BSTZ have any error correction circuits?
Yes, the AD7951BSTZ includes error correction circuits.
