Overview
The MAX1142ACAP+ is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX1142/MAX1143 family, known for their high-speed and low-power operation. The MAX1142ACAP+ is designed to operate with a single +5V supply and features a serial interface compatible with SPI, QSPI, and MICROWIRE devices. It includes an internal track/hold circuit, a clock generator, and an internal bandgap reference, making it suitable for various applications requiring precise analog-to-digital conversion.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 14 | Bits | |||
| Sampling Rate | Bipolar | 200ksps | |||
| Unipolar | 150ksps | ||||
| SINAD | fIN = 5kHz | 81 | 82 | dB | |
| SNR | fIN = 5kHz | 82 | dB | ||
| THD | fIN = 5kHz | -88 | dB | ||
| SFDR | fIN = 5kHz | 90 | dB | ||
| Input Range (Unipolar) | 0 | 12 | V | ||
| Input Range (Bipolar) | -12 | 12 | V | ||
| Power Supply | +5V | ||||
| Power Consumption (Unipolar Mode) | 7.5mA | ||||
| Shutdown Current | 2.5µA | ||||
| Package Type | 20-SSOP |
Key Features
- 200ksps (bipolar) and 150ksps (unipolar) sampling rate
- 14-bit resolution with no missing codes and 1LSB INL guaranteed
- Excellent dynamic performance: SINAD ≥ 81dB, SNR ≥ 82dB, THD ≥ -88dB, SFDR ≥ 90dB
- Single +5V supply operation
- Low power consumption: 7.5mA in unipolar mode and 2.5µA in shutdown mode
- Software-configurable unipolar and bipolar input ranges: 0 to +12V and ±12V for MAX1142
- Internal or external reference and clock options
- Three user-programmable logic outputs for external multiplexer or PGA control
- Direct interface to SPI, QSPI, and MICROWIRE devices without external logic
Applications
- Industrial process control
- Industrial I/O modules
- Data-acquisition systems
- Medical instruments
- Portable and battery-powered equipment
Q & A
- What is the resolution of the MAX1142ACAP+ ADC?
The MAX1142ACAP+ has a 14-bit resolution.
- What are the sampling rates for the MAX1142ACAP+?
The sampling rates are 200ksps for bipolar inputs and 150ksps for unipolar inputs.
- What is the input range for the MAX1142ACAP+?
The input range is 0 to +12V for unipolar and ±12V for bipolar inputs.
- What is the power supply requirement for the MAX1142ACAP+?
The MAX1142ACAP+ operates on a single +5V supply.
- How much power does the MAX1142ACAP+ consume in unipolar mode?
The power consumption is 7.5mA in unipolar mode.
- What is the shutdown current of the MAX1142ACAP+?
The shutdown current is 2.5µA.
- Can the MAX1142ACAP+ use an external reference and clock?
Yes, the MAX1142ACAP+ supports both internal and external reference and clock options.
- What type of interface does the MAX1142ACAP+ support?
The MAX1142ACAP+ supports SPI, QSPI, and MICROWIRE interfaces.
- What are some typical applications for the MAX1142ACAP+?
Typical applications include industrial process control, industrial I/O modules, data-acquisition systems, medical instruments, and portable and battery-powered equipment.
- What is the package type of the MAX1142ACAP+?
The package type is 20-SSOP.
