Overview
The AD9258BCPZ-105, produced by Analog Devices Inc., is a dual, 14-bit analog-to-digital converter (ADC) designed for high-performance applications. This ADC features a multistage, differential pipelined architecture with integrated output error correction logic, making it suitable for communications and other high-speed data acquisition applications. It operates from a single 1.8 V analog supply and a separate 1.8 V digital output driver supply, which can be configured for either CMOS or LVDS outputs. The device is available in a 64-lead Lead Frame Chip Scale Package (LFCSP) and is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Sample Rate | 20 | - | 125 | MSPS |
| Resolution | - | - | 14 bits | - |
| Analog Supply Voltage (AVDD) | 1.7 | 1.8 | 1.9 | V |
| Digital Output Supply Voltage (DRVDD) | 1.7 | 1.8 | 1.9 | V |
| Power Consumption (DC Input) | 590 | 750 | 777 | mW |
| Input Span (VREF = 1.0 V) | - | - | 2 V p-p | - |
| Input Capacitance | - | - | 8 pF | - |
| SNR @ 70 MHz and 125 MSPS | - | - | 77.6 dBFS | - |
| SFDR @ 70 MHz and 125 MSPS | - | - | 88 dBc | - |
Key Features
- High performance with SNR = 77.6 dBFS and SFDR = 88 dBc at 70 MHz and 125 MSPS.
- Low power consumption: 750 mW at 125 MSPS.
- 1.8 V analog supply operation and 1.8 V CMOS or LVDS output supply.
- Integrated ADC sample-and-hold inputs and duty cycle stabilizer.
- IF sampling frequencies up to 300 MHz.
- Optional on-chip dither for improved SFDR performance.
- Programmable internal ADC voltage reference.
- Flexible power-down options and standard 3-wire SPI-compatible serial interface.
- Pin compatibility with the AD9268, AD9251, AD9231, and AD9204 family of products.
Applications
The AD9258 is designed to support various high-performance applications, particularly in communications. Key applications include:
- Wireless infrastructure and base stations
- Medical imaging and diagnostic equipment
- Aerospace and defense systems
- High-speed data acquisition systems
- Test and measurement equipment
Q & A
- What is the resolution of the AD9258 ADC?
The AD9258 is a 14-bit analog-to-digital converter.
- What are the operating temperature ranges for the AD9258?
The AD9258 operates over the industrial temperature range of −40°C to +85°C.
- What are the available output formats for the AD9258?
The AD9258 can output data in CMOS or LVDS formats).
- What is the maximum sample rate of the AD9258?
The maximum sample rate of the AD9258 is 125 MSPS).
- Does the AD9258 have integrated sample-and-hold inputs?
Yes, the AD9258 features integrated ADC sample-and-hold inputs).
- What is the power consumption of the AD9258 at 125 MSPS?
The power consumption at 125 MSPS is approximately 750 mW).
- Is the AD9258 compatible with other ADC models from Analog Devices?
Yes, the AD9258 is pin compatible with the AD9268, AD9251, AD9231, and AD9204 family of products).
- What interface is used for setup and control of the AD9258?
The AD9258 uses a 3-wire SPI-compatible serial interface for setup and control).
- Does the AD9258 have an on-chip dither option?
Yes, the AD9258 has an optional on-chip dither for improved SFDR performance).
- What is the input span for the AD9258 when VREF is 1.0 V?
The input span is 2 V p-p when VREF is 1.0 V).
