Overview
The MAX1112CAP is a low-power, 8-bit, 8-channel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is designed for high-efficiency data acquisition and features a single 4.5V to 5.5V supply operation. It is particularly suited for applications requiring low power consumption and multiple input configurations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Power Consumption at 50ksps | 135 | µA |
| Power Consumption at 1ksps (Power-Down) | 13 | µA |
| Sampling Rate | Up to 50 | ksps |
| Number of Analog Inputs (MAX1112) | 8 (Single-Ended) or 4 (Differential) | |
| Internal Reference Voltage | 4.096 | V |
| Serial Interface Compatibility | SPI, QSPI, MICROWIRE | |
| Operating Temperature Range | 0°C to +70°C (MAX1112CAP), -40°C to +85°C (MAX1112EAP) | |
| Package Type | 20-pin SSOP |
Key Features
- Single 4.5V to 5.5V supply operation
- Low power consumption: 135µA at 50ksps, 13µA at 1ksps in power-down mode
- 8-channel single-ended or 4-channel differential inputs
- Internal track/hold, voltage reference, and clock
- SPI, QSPI, and MICROWIRE-compatible serial interface
- Software-configurable unipolar or bipolar inputs
- Automatic power-down mode with SHDN input pin control
- Total unadjusted error: ±1 LSB (max), ±0.3 LSB (typ)
Applications
- Portable data logging
- Hand-held measurement devices
- Medical instruments
- System diagnostics
- Solar-powered remote systems
- 4mA to 20mA-powered remote data-acquisition systems
Q & A
- What is the supply voltage range for the MAX1112CAP?
The MAX1112CAP operates from a single 4.5V to 5.5V supply.
- How many analog inputs does the MAX1112CAP have?
The MAX1112CAP has 8 analog inputs, which can be configured as single-ended or differential inputs.
- What is the maximum sampling rate of the MAX1112CAP?
The MAX1112CAP can sample at rates up to 50ksps.
- What serial interface standards is the MAX1112CAP compatible with?
The MAX1112CAP is compatible with SPI, QSPI, and MICROWIRE serial interface standards.
- How does the power-down mode work on the MAX1112CAP?
The MAX1112CAP has a software-programmable, 2µA automatic power-down mode that can be controlled using the SHDN input pin. Accessing the serial interface automatically powers up the device.
- What is the operating temperature range for the MAX1112CAP?
The operating temperature range for the MAX1112CAP is 0°C to +70°C, and for the MAX1112EAP, it is -40°C to +85°C.
- What package type is the MAX1112CAP available in?
The MAX1112CAP is available in a 20-pin SSOP package.
- What are some common applications for the MAX1112CAP?
- How accurate is the MAX1112CAP in terms of total unadjusted error?
The total unadjusted error for the MAX1112CAP is ±1 LSB (max) and ±0.3 LSB (typ).
- Can the MAX1112CAP be used with external reference voltages?
