Overview
The AD7858LBR-REEL is a high-performance, low-power 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7858L series, which is optimized for low power consumption. It operates from a single 3 V or 5 V power supply and is designed for a variety of applications requiring high accuracy and low power dissipation.
The AD7858L features automatic calibration on power-up, system and self-calibration options, and flexible power management including automatic power-down after conversion. It is available in 24-lead packages such as DIP, SOIC, and SSOP, making it versatile for different design needs.
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Number of Bits | 12 | ||
| Number of Inputs | 8 single-ended or 4 pseudo-differential | ||
| Conversion Rate | 100 kHz | ||
| Supply Voltage | 3 V to 5.5 V | V | Analog and Digital |
| Power Consumption | 4.5 mW (VDD = 3 V) | mW | Normal operation |
| Power-Down Mode | 1.15 mW (VDD = 3 V, 10 kSPS) | mW | |
| Operating Temperature | -40°C to +85°C | °C | |
| Package Type | 24-lead SOIC, DIP, SSOP | ||
| Reference Type | External, Internal | ||
| Data Interface | SPI, QSPI, 8051/µP compatible |
Key Features
- Automatic calibration on power-up and system/self-calibration options to ensure accurate operation over time and temperature.
- Flexible power management options including automatic power-down after conversion to minimize power consumption.
- Operates with reference voltages from 1.2 V to VDD and has an analog input range from 0 V to VDD.
- Supports eight single-ended or four pseudo-differential input channels.
- Versatile serial I/O port compatible with SPI, QSPI, and 8051/µP interfaces.
- Low power consumption, typically 4.5 mW for normal operation and 1.15 mW in power-down mode at 10 kSPS (VDD = 3 V).
Applications
- Battery-powered systems such as personal digital assistants, medical instruments, and mobile communications devices.
- Pen computers and other portable devices.
- Instrumentation and control systems requiring high accuracy and low power.
- High-speed modems and other communication equipment.
Q & A
- What is the conversion rate of the AD7858L?
The AD7858L has a conversion rate of 100 kHz.
- What are the available package types for the AD7858L?
The AD7858L is available in 24-lead DIP, SOIC, and SSOP packages.
- What is the power consumption of the AD7858L in normal operation?
The AD7858L consumes typically 4.5 mW of power in normal operation at VDD = 3 V.
- Does the AD7858L support pseudo-differential inputs?
- What are the operating temperature ranges for the AD7858L?
The operating temperature range for the AD7858L is from -40°C to +85°C.
- What types of calibration does the AD7858L support?
The AD7858L supports automatic calibration on power-up, system calibration, and self-calibration.
- What data interfaces are supported by the AD7858L?
The AD7858L supports SPI, QSPI, and 8051/µP compatible serial interfaces.
- How many input channels does the AD7858L have?
The AD7858L has eight single-ended or four pseudo-differential input channels.
- What is the reference voltage range for the AD7858L?
The reference voltage range for the AD7858L is from 1.2 V to VDD.
- Does the AD7858L have power-down options?
