Overview
The AD7859BSZ is a high-speed, low-power, 8-channel, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is optimized for speed and operates from a single 3 V or 5 V power supply. It features self-calibration and system calibration options to ensure accurate operation over time and temperature. The AD7859BSZ is part of the AD7859 family, which includes variants optimized for different performance criteria, such as the AD7859L for low power applications.
Key Specifications
| Parameter | Value |
|---|---|
| Converter Type | ADC, Successive Approximation |
| Resolution | 12-bit |
| Number of Analog In Channels | 8 |
| Sampling Rate | 200 kSPS |
| Supply Voltage | 3 V to 5.5 V (Analog and Digital) |
| Power Consumption | 25 mW (normal operation), 1.3 mW (power-down mode at 3 V, 10 kSPS) |
| Input Voltage Range | 0 to VREF (unipolar), –VREF/2 to +VREF/2 about VREF/2 (bipolar) |
| Output Bit Code | Straight Binary, 2's Complement Binary |
| Data Interface | Parallel (16-bit or 8-bit) |
| Package / Case | 44-QFP |
| Operating Temperature | -40°C to 85°C |
| Integral Nonlinearity (INL) | 1 LSB |
| Differential Nonlinearity | 1 LSB |
| Signal to Noise Ratio (SNR) | 71 dB |
Key Features
- High-speed operation with a throughput rate of 200 kHz.
- Low power consumption with automatic power-down options after conversion.
- Self-calibration and system calibration for accurate operation.
- Pseudo-differential sampling scheme with a track-and-hold input stage acquiring signals in 500 ns.
- Flexible parallel interface supporting 16-bit or 8-bit data transfer.
- Available in 44-pin PQFP and PLCC packages.
- CMOS construction ensuring low power dissipation.
- On-chip registers for control, status, test, and calibration.
Applications
- Battery-powered systems such as personal digital assistants and medical instruments.
- Mobile communications and high-speed modems.
- Instrumentation and control systems.
- Pen computers and other portable devices.
Q & A
- What is the AD7859BSZ?
The AD7859BSZ is a high-speed, low-power, 8-channel, 12-bit analog-to-digital converter produced by Analog Devices Inc. - What are the operating voltage ranges for the AD7859BSZ?
The device operates from a single 3 V to 5.5 V power supply for both analog and digital sections. - What is the sampling rate of the AD7859BSZ?
The AD7859BSZ has a sampling rate of 200 kSPS. - What are the power-down options for the AD7859BSZ?
The device features automatic power-down options after conversion, reducing power consumption significantly. - What types of calibration does the AD7859BSZ support?
The device supports self-calibration and system calibration to ensure accurate operation over time and temperature. - What is the input voltage range for the AD7859BSZ?
The input voltage range is 0 to VREF (unipolar) and –VREF/2 to +VREF/2 about VREF/2 (bipolar). - What is the data interface of the AD7859BSZ?
The device supports a parallel interface with options for 16-bit or 8-bit data transfer. - In what packages is the AD7859BSZ available?
The device is available in 44-pin PQFP and PLCC packages. - What are some typical applications of the AD7859BSZ?
Typical applications include battery-powered systems, mobile communications, instrumentation and control systems, and pen computers. - What is the operating temperature range of the AD7859BSZ?
The operating temperature range is -40°C to 85°C.
