Overview
The AD6644, identified by the part number 5962-9961601HXA, is a high-performance analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for high-speed applications, featuring a 14-bit resolution and a sampling rate of up to 65 MSPS (Mega Samples Per Second). The AD6644 incorporates advanced technologies such as a dc-coupled amplifier front end, on-chip track-and-hold circuitry, and an innovative multipass architecture to achieve exceptional performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | Up to 65 MSPS |
| Analog Input Voltage Range | ±0.5 V, ±1.0 V, ±2 V (user configurable) |
| Input Resistance | 100 Ω, 200 Ω, 400 Ω (depending on input range) |
| Input Capacitance | 4.0 pF to 7.0 pF |
| Analog Input Bandwidth | 100 MHz |
| Channel-to-Channel Isolation | 90 dB |
| Transient Response | 15.3 ns |
| Overvoltage Recovery Time | 40 ns to 200 ns (depending on input level) |
| Supply Voltages | ±5.0 V (analog), 5.0 V (analog-to-digital conversion), 3.3 V (digital output) |
| Operating Temperature Range | −40°C to +85°C |
| Package Type | 68-lead ceramic leaded chip carrier |
Key Features
- High-speed, 14-bit, 65 MSPS ADC with dc-coupled amplifier front end.
- User-configurable input amplitude options.
- On-chip track-and-hold circuitry and multipass architecture for high performance.
- Independent channels with matched gain for each channel.
- Fully tested and characterized performance.
- High input impedance and gain provided by the AD8037 and AD8138 amplifiers.
- Excellent channel-to-channel isolation and transient response.
Applications
The AD6644 is suitable for a variety of high-speed applications, including:
- Medical Imaging and Diagnostic Equipment
- Radar and Electronic Warfare Systems
- High-Speed Data Acquisition Systems
- Communications and Telecommunications Equipment
- Aerospace and Defense Systems
Q & A
- What is the resolution and sampling rate of the AD6644? The AD6644 has a 14-bit resolution and a sampling rate of up to 65 MSPS.
- What are the available input voltage ranges for the AD6644? The AD6644 offers user-configurable input voltage ranges of ±0.5 V, ±1.0 V, and ±2 V.
- What is the input resistance of the AD6644? The input resistance varies depending on the input range, with values of 100 Ω, 200 Ω, and 400 Ω.
- What is the operating temperature range of the AD6644? The AD6644 operates within a temperature range of −40°C to +85°C.
- What type of package does the AD6644 use? The AD6644 is packaged in a 68-lead ceramic leaded chip carrier.
- What are the supply voltages required for the AD6644? The AD6644 requires ±5.0 V for analog signal conditioning, 5.0 V for analog-to-digital conversion, and 3.3 V for the digital output stage.
- How does the AD6644 achieve high performance? The AD6644 uses on-chip track-and-hold circuitry and an innovative multipass architecture to achieve high performance.
- Is the AD6644 suitable for high-speed applications? Yes, the AD6644 is designed for high-speed applications and features a dc-coupled amplifier front end and high input impedance.
- What are some common applications of the AD6644? Common applications include medical imaging, radar and electronic warfare systems, high-speed data acquisition systems, communications and telecommunications equipment, and aerospace and defense systems.
- Is the AD6644 fully tested and characterized? Yes, the AD6644 is fully tested and characterized to ensure reliable performance.
