Overview
The AD6649BCPZ from Analog Devices Inc. is a mixed-signal intermediate frequency (IF) receiver designed to support communications applications. It features dual 14-bit, 250 MSPS analog-to-digital converters (ADCs) and a wideband digital downconverter (DDC). This device is optimized for low cost, small size, wide bandwidth, and versatility, making it suitable for various communication systems such as CDMA2000 and GSM/EDGE.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 14 | |
| Sampling Rate | 250 MSPS | |
| Number of A/D Converters | 2 | |
| Min Supply Voltage | 1.7 V | |
| Supply Voltage | 1.8 V | |
| Package | 64-VFQFN Exposed Pad, CSP | |
| Number of Pins | 64 | |
| Interface | SPI, Serial | |
| Power Dissipation | 1.16 W | |
| Nominal Supply Current | 271 mA |
Key Features
- Dual 14-bit, 250 MSPS ADCs with multistage, differential pipelined architecture and integrated output error correction logic.
- Wideband digital downconverter (DDC) with four cascaded signal processing stages: a 32-bit frequency translator (NCO), an optional sample rate converter, a fixed FIR filter, and an fS/4 fixed-frequency NCO.
- Programmable threshold detector for automatic gain control (AGC) and fast detect output bits to monitor incoming signal power.
- Integrated voltage reference and duty cycle stabilizer to maintain excellent performance.
- LVDS output ports operating at ANSI or reduced swing levels.
- SPI interface for control and configuration.
Applications
The AD6649BCPZ is designed for various communication systems, including:
- CDMA2000 and GSM/EDGE receivers.
- IF diversity receivers requiring wide bandwidth and high sampling rates.
- Communications applications where low cost, small size, and versatility are crucial.
Q & A
- What is the sampling rate of the AD6649BCPZ?
The sampling rate of the AD6649BCPZ is 250 MSPS.
- How many ADCs are integrated into the AD6649BCPZ?
The AD6649BCPZ features dual 14-bit ADCs.
- What is the minimum supply voltage for the AD6649BCPZ?
The minimum supply voltage is 1.7 V.
- What type of interface does the AD6649BCPZ use for control and configuration?
The AD6649BCPZ uses an SPI interface.
- What is the power dissipation of the AD6649BCPZ?
The power dissipation is 1.16 W.
- What are the key components of the digital downconverter (DDC) in the AD6649BCPZ?
The DDC includes a 32-bit frequency translator (NCO), an optional sample rate converter, a fixed FIR filter, and an fS/4 fixed-frequency NCO.
- How does the AD6649BCPZ support automatic gain control (AGC)?
The AD6649BCPZ supports AGC through a programmable threshold detector and fast detect output bits to monitor incoming signal power.
- What type of output ports does the AD6649BCPZ have?
The AD6649BCPZ has LVDS output ports operating at ANSI or reduced swing levels.
- What is the package type of the AD6649BCPZ?
The package type is 64-VFQFN Exposed Pad, CSP.
- What are some typical applications of the AD6649BCPZ?
Typical applications include CDMA2000 and GSM/EDGE receivers, and IF diversity receivers requiring wide bandwidth and high sampling rates.
