Overview
The AD9257BCPZRL7-40, produced by Analog Devices Inc., is an octal, 14-bit analog-to-digital converter (ADC) designed for low cost, low power, small size, and ease of use. This ADC operates at conversion rates of up to 40 MSPS and is optimized for outstanding dynamic performance and low power consumption. It features an on-chip sample-and-hold circuit and requires a single 1.8 V power supply. The device is compatible with LVPECL-, CMOS-, and LVDS-compatible sample rate clocks and does not require external reference or driver components for many applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Conversion Rate | Up to 40 MSPS | |
| Power Supply | 1.8 V | |
| Power Consumption per Channel | 55 mW at 65 MSPS (scalable power options) | mW |
| Signal-to-Noise Ratio (SNR) | 75.5 dB (to Nyquist) | dB |
| Spurious-Free Dynamic Range (SFDR) | 91.6 dBc (to Nyquist) | dBc |
| Differential Nonlinearity (DNL) | ±0.6 LSB (typical) | LSB |
| Integral Nonlinearity (INL) | ±1.1 LSB (typical) | LSB |
| Input Resistance | 30 kΩ at 25°C | kΩ |
| Input Capacitance | 2 pF at 25°C | pF |
| Package Type | 64-Lead LFCSP (9mm x 9mm w/ EP) | |
| Temperature Range | -40°C to +85°C | °C |
Key Features
- Low power consumption: 55 mW per channel at 65 MSPS with scalable power options.
- Serial LVDS (ANSI-644, default) output with low power, reduced signal option (similar to IEEE 1596.3).
- Programmable clock and data alignment.
- Programmable digital test pattern generation, including built-in deterministic and pseudorandom patterns, as well as custom user-defined test patterns via the SPI interface.
- Individual channel power-down supported, consuming less than 2 mW when all channels are disabled.
- SPI interface for setup and control.
- Data clock output (DCO) and frame clock output (FCO) for data capture and byte signaling.
Applications
- Medical imaging and nondestructive ultrasound.
- Portable ultrasound and digital beam-forming systems.
- Quadrature and diversity radio receivers.
- Optical networking.
- Test equipment.
Q & A
- What is the resolution of the AD9257BCPZRL7-40 ADC?
The AD9257BCPZRL7-40 has a resolution of 14 bits.
- What are the conversion rates supported by the AD9257BCPZRL7-40?
The AD9257BCPZRL7-40 supports conversion rates up to 40 MSPS.
- What is the power supply requirement for the AD9257BCPZRL7-40?
The device requires a single 1.8 V power supply.
- What is the typical power consumption per channel at 65 MSPS?
The typical power consumption per channel at 65 MSPS is 55 mW.
- What are the key dynamic performance metrics of the AD9257BCPZRL7-40?
The key metrics include an SNR of 75.5 dB and an SFDR of 91.6 dBc, both to Nyquist.
- What type of output does the AD9257BCPZRL7-40 use?
The device uses serial LVDS (ANSI-644, default) output.
- Does the AD9257BCPZRL7-40 support individual channel power-down?
Yes, individual channel power-down is supported, consuming less than 2 mW when all channels are disabled.
- What interface is used for setup and control of the AD9257BCPZRL7-40?
The device uses an SPI interface for setup and control.
- What are some of the applications for the AD9257BCPZRL7-40?
Applications include medical imaging, portable ultrasound, quadrature and diversity radio receivers, optical networking, and test equipment.
- What is the package type and temperature range of the AD9257BCPZRL7-40?
The device is available in a 64-Lead LFCSP package and is specified over the industrial temperature range of -40°C to +85°C.
