Overview
The AD6644ASTZ-65 is a high-speed, high-performance, monolithic 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. It is part of the third generation in a wideband ADC family, following the AD9042 and AD6640. This ADC is designed for multichannel, multimode receivers and is integrated into the SoftCell® transceiver chipset. The AD6644ASTZ-65 includes all necessary functions such as track-and-hold (TH) and reference on-chip, providing a complete conversion solution. It is built on Analog Devices' high-speed complementary bipolar process (XFCB) and utilizes an innovative, multipass circuit architecture.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 | Bits |
| Sample Rate | 65 | MSPS |
| Sampling Jitter | < 300 | fs |
| Spurious-Free Dynamic Range (SFDR) | 100 | dB |
| Power Dissipation | 1.3 | W |
| Analog Input Stage | Fully Differential | |
| Digital Output Format | Twos Complement | |
| Digital Output Supply | 3.3 V | |
| Package Type | 52-Lead LQFP (10mm x 10mm) | |
| Operating Temperature Range | –25°C to +85°C |
Key Features
- Guaranteed sample rate of 65 MSPS with a 40 MSPS version available
- Sampling jitter less than 300 fs
- 100 dB multitone spurious-free dynamic range (SFDR) through the Nyquist band
- 1.3 W power dissipation
- Fully differential analog input stage
- Pin compatible to AD6645
- Twos complement digital output format
- 3.3 V CMOS compatible digital outputs
- Data-ready for output latching
- Complete solution including reference and track-and-hold on-chip
Applications
- Multichannel, multimode receivers
- AMPS, IS-136, CDMA, GSM, WCDMA
- Single channel digital receivers
- Antenna array processing
- Communications instrumentation
- Radar and infrared imaging
- Instrumentation
Q & A
- What is the resolution of the AD6644ASTZ-65?
The AD6644ASTZ-65 has a resolution of 14 bits.
- What is the maximum sample rate of the AD6644ASTZ-65?
The maximum sample rate is 65 MSPS, with a 40 MSPS version also available.
- What is the spurious-free dynamic range (SFDR) of the AD6644ASTZ-65?
The SFDR is 100 dB through the Nyquist band.
- What is the power dissipation of the AD6644ASTZ-65?
The power dissipation is 1.3 W.
- What type of analog input stage does the AD6644ASTZ-65 have?
The AD6644ASTZ-65 has a fully differential analog input stage.
- What is the digital output format of the AD6644ASTZ-65?
The digital output format is twos complement.
- What is the operating temperature range of the AD6644ASTZ-65?
The operating temperature range is from –25°C to +85°C.
- What package type is the AD6644ASTZ-65 available in?
The AD6644ASTZ-65 is packaged in a 52-lead plastic low profile quad flat package (LQFP).
- What are some common applications of the AD6644ASTZ-65?
Common applications include multichannel, multimode receivers, single channel digital receivers, antenna array processing, communications instrumentation, radar, and infrared imaging.
- Is the AD6644ASTZ-65 compatible with digital ASICs?
Yes, the digital outputs can be run on a 3.3 V supply, making it easy to interface with digital ASICs.
