Overview
The AD9258BCPZ-125 is a high-performance, dual 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is designed to support communications applications where high performance, low power consumption, small size, and versatility are crucial. The AD9258 features a multistage, differential pipelined architecture with integrated output error correction logic and wide bandwidth differential sample-and-hold analog input amplifiers. It operates from a single 1.8 V analog supply and a separate 1.8 V digital output driver supply, supporting both CMOS and LVDS output modes.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Sample Rate | 20 | 125 | MSPS | |
| 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) | 750 | mW | ||
| Input Span (VREF = 1.0 V) | 2 V p-p | |||
| Input Capacitance | 8 pF | |||
| Input Common-Mode Voltage | 0.9 V | |||
| Reference Input Resistance | 6 kΩ | |||
| SNR @ 70 MHz and 125 MSPS | 77.6 dBFS | |||
| SFDR @ 70 MHz and 125 MSPS | 88 dBc | |||
Key Features
- High SNR and SFDR: 77.6 dBFS and 88 dBc at 70 MHz and 125 MSPS, respectively.
- Low Power Consumption: Up to 750 mW at 125 MSPS.
- Flexible Output Modes: Supports 1.8 V CMOS or LVDS output modes.
- Integrated Sample-and-Hold Inputs: Wide bandwidth differential sample-and-hold analog input amplifiers.
- Programmable Internal ADC Voltage Reference: Eases design considerations.
- On-Chip Dither Option: Improves SFDR performance with low power analog input.
- Integer 1-to-8 Input Clock Divider: Enhances flexibility in clocking options).
- SPI-Compatible Serial Interface: For setup and control, including data formatting, clock DCS, power-down, test modes, and voltage reference mode).
- Pin Compatibility: With AD9268, AD9251, AD9231, and AD9204 family of products for easy migration).
Applications
The AD9258BCPZ-125 is designed for various high-performance communications applications, including:
- Wireless Infrastructure: Base stations and repeaters).
- Medical Imaging: MRI, CT scanners, and other medical imaging equipment).
- Test and Measurement: High-speed data acquisition systems).
- Radar Systems: Phased array radar and other radar applications).
- IF Sampling: Frequencies up to 300 MHz).
Q & A
- What is the resolution of the AD9258BCPZ-125?
The AD9258BCPZ-125 has a resolution of 14 bits).
- What are the sample rate options for the AD9258BCPZ-125?
The sample rates available are 20 MSPS, 80 MSPS, 105 MSPS, and 125 MSPS).
- What are the supported output modes for the AD9258BCPZ-125?
The device supports 1.8 V CMOS and LVDS output modes).
- What is the power consumption of the AD9258BCPZ-125 at 125 MSPS?
The power consumption is up to 750 mW at 125 MSPS).
- Does the AD9258BCPZ-125 have an integrated voltage reference?
Yes, it has a programmable internal ADC voltage reference).
- What is the input span for the AD9258BCPZ-125 when VREF is 1.0 V?
The input span is 2 V p-p when VREF is 1.0 V).
- What is the SNR of the AD9258BCPZ-125 at 70 MHz and 125 MSPS?
The SNR is 77.6 dBFS at 70 MHz and 125 MSPS).
- Is the AD9258BCPZ-125 pin compatible with other ADCs?
Yes, it is pin compatible with the AD9268, AD9251, AD9231, and AD9204 family of products).
- What interface is used for setup and control of the AD9258BCPZ-125?
A 3-wire SPI-compatible serial interface is used for setup and control).
- What are the temperature range specifications for the AD9258BCPZ-125?
The device is specified over the industrial temperature range of −40°C to +85°C).
