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The AD9268BCPZ-125 is a dual-channel, 16-bit, 125 MSPS analog-to-digital converter (ADC) launched by Analog Devices (ADI), designed to support communication applications that require high performance, low cost, small size, and versatility. It has the following advantages:

The on-chip jitter option improves SFDR performance through low-power analog input.

The proprietary differential input maintains excellent signal-to-noise ratio (SNR) performance at a maximum input frequency of 300 MHz.

It is powered by a single 1.8V supply, while the digital output driver is powered by an independent supply to support 1.8V CMOS or LVDS output.

The Standard Serial Port Interface (SPI) supports various product features and functions, such as: data formatting (offset binary, binary complement or Gray code), clock DCS enabling, power-saving mode, test mode, and reference voltage mode, etc.

Compatible with the AD9258 pin, it enables 16-bit products to be easily migrated to 14-bit products. The AD9268BCPZ-125 is also pin-compatible with the AD9251, AD9231 and AD9204 series products, which are targeted at applications with lower sampling rates and low power consumption.

Overview

The AD9268BCPZ-125 is a dual-channel, 16-bit, 125 MSPS analog-to-digital converter (ADC) designed to support communication applications that require high performance, low cost, small size and versatility.

This dual-channel ADC core adopts a multi-level, differential pipeline architecture and integrates output error correction logic. Each ADC features a wide bandwidth, differential sampling-holding analog input amplifier, supporting a variety of input ranges selectable by the user. The AD9268BCPZ-125 integrated reference voltage source simplifies the design. Duty cycle stabilizers can be used to compensate for the fluctuations in the duty cycle of the ADC clock, enabling the converter to maintain excellent performance.

The ADC output data of the AD9268BCPZ-125 can be directly routed to two external 16-bit output ports, which can be set to 1.8V CMOS or LVDS.

When necessary, the flexible power-saving options of the AD9268BCPZ-125 can significantly reduce power consumption.

Settings and control programming are accomplished using a three-wire SPI-compatible serial interface.

The AD9268BCPZ-125 is packaged in a 64-pin LFCSP package and has a rated temperature range of -40 °C to +85°C in the industrial temperature range.

Application scenarios

The AD9268BCPZ-125 is suitable for diversity radio systems, multi-mode digital receivers, I/Q demodulation systems and broadband data transmission equipment. Typical applications of ‌ include:

Communication

Diversity radio system

Multimode digital Receiver (3G

GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA

I/Q demodulation system

Intelligent antenna system

General Software-defined Radio

Broadband Data application

Ultrasonic equipment

In addition, the AD9268BCPZ-125 mainly features the following functional characteristics:

SNR = 78.2 dBFS at 70 MHz and 125 MSPS

SFDR = 88 dBc @ 70 MHz and 125 MSPS

Low power consumption: 750 mW at 125 MSPS

Powered by a 1.8V analog power supply

1.8V CMOS or LVDS output power supply

Input integers 1 to 8 into the clock divider

The intermediate frequency sampling frequency is up to 300 MHz

The small-signal input noise at 200ω input is 153.6 dBm/Hz

Impedance at 70 MHz and 125 MSPS

Optional in-chip perturbation

Programmable internal ADC reference voltage source

Integrated ADC sampling-hold input

Flexible analog input range :1 V peak-to-peak value to 2 V peak-to-peak value

Differential analog input with a bandwidth of 650 MHz

ADC clock duty cycle stabilizer

95 dB channel isolation/crosstalk

Serial port control

User-configurable built-in self-test (BIST) function

Energy-saving and power-saving mode

Shenzhen Mingjiada Electronics Co., ltd. is a globally renowned supplier of ADI analog-to-digital converters, specializing in providing AD9268BCPZ-125 products. If needed, real-time inventory can be inquired through the official website (www.hkmjd.com).