Overview
The AD7641BCPZRL is an 18-bit, 2 MSPS (Mega Samples Per Second), charge redistribution Successive Approximation Register (SAR) analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component operates from a single 2.5 V power supply and features a high-speed, fully differential ADC with internal conversion clock, internal reference, and error correction circuits. It is available in a 48-VFQFN Exposed Pad, CSP package and is specified to operate from −40°C to +85°C.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | 18 | Bits | |||
| Analog Input Voltage Range | VIN+ − VIN− | −VREF | +VREF | V | |
| Operating Input Voltage | VIN+, VIN− to AGND | −0.1 | AVDD + 0.1 | V | |
| Analog Input CMRR | fIN = 100 kHz | 58 | dB | ||
| Input Current | 2 MSPS throughput | 18 | μA | ||
| Throughput Speed | Wideband warp, warp modes | 500 | ns | ||
| Throughput Rate | Wideband warp, warp modes | 2 | MSPS | ||
| Internal Reference Voltage | @ 25°C | 2.038 | 2.048 | 2.058 | V |
| Temperature Drift | −40°C to +85°C | ±10 | ppm/°C |
Key Features
- Single-Supply Operation: Operates from a single 2.5 V power supply.
- High-Speed Sampling: Supports two high sampling rate modes (wideband warp and warp) and a fast mode (normal) for asynchronous rate applications.
- Internal Reference: Features a 2.048 V internal reference with a typical temperature drift of ±10 ppm/°C.
- Flexible Interface: Offers versatile parallel (16- or 8-bit bus) or 2-wire serial interfaces.
- Superior Linearity: No missing 18-bit codes, ensuring high linearity.
- Hardware Factory Calibration: Calibrated and tested to ensure both AC and DC parameters such as SNR, gain, offset, and linearity.
Applications
- Communications: Suitable for high-speed data acquisition in communication systems.
- Automatic Test Equipment (ATE): Used in automated testing equipment due to its high accuracy and speed.
- General Data Acquisition: Ideal for various data acquisition applications requiring high resolution and speed.
Q & A
- What is the resolution of the AD7641BCPZRL ADC?
The AD7641BCPZRL has an 18-bit resolution.
- What is the maximum sampling rate of the AD7641BCPZRL?
The maximum sampling rate is 2 MSPS.
- What type of interface does the AD7641BCPZRL support?
The AD7641BCPZRL supports both parallel (16- or 8-bit bus) and 2-wire serial interfaces.
- What is the operating voltage range of the AD7641BCPZRL?
The operating voltage range is 2.37 V to 2.63 V for both analog and digital supplies.
- Does the AD7641BCPZRL have an internal reference?
Yes, it features a 2.048 V internal reference.
- What is the temperature range for the AD7641BCPZRL?
The AD7641BCPZRL operates from −40°C to +85°C.
- What is the typical temperature drift of the internal reference?
The typical temperature drift is ±10 ppm/°C.
- Is the AD7641BCPZRL Pb-free?
Yes, the AD7641BCPZRL is available in Pb-free packages only.
- What is the input current at 2 MSPS throughput?
The input current is 18 μA at 2 MSPS throughput.
- Does the AD7641BCPZRL support hardware factory calibration?
Yes, it is hardware factory calibrated and tested for both AC and DC parameters.
