Overview
The MAX1149 is a low-power, 14-bit, multichannel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device features an internal track/hold (T/H), voltage reference, and clock, making it suitable for a variety of data-acquisition applications. The MAX1149 operates from a single +2.7V to +3.6V supply and supports software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14-bit |
| Conversion Rate | 116 ksps |
| Supply Voltage (Analog/Digital) | +2.7V to +3.6V |
| Reference Type | Internal, External (1.5V to VDD) |
| Internal Reference Voltage | +2.500V |
| Interface | SPI, QSPI, MICROWIRE |
| Operating Temperature | -40°C to 85°C |
| Package/Case | 20-TSSOP (0.173", 4.40mm Width) |
| Power Dissipation | 879 mW |
Key Features
- Internal track/hold (T/H), voltage reference, and clock.
- Software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
- 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices.
- Serial strobe output (SSTRB) for convenient connection to digital signal processors.
- Hardware shutdown and two software power-down modes to reduce power consumption.
- Quick turn-on time, allowing power-down between conversions with supply current under 120µA.
Applications
- Multiplexed A/D Converters
- Data-acquisition systems
- Digital signal processing systems
- Industrial control and automation
- Medical devices and diagnostic equipment
Q & A
- What is the resolution of the MAX1149 ADC?
The MAX1149 has a resolution of 14 bits.
- What is the operating voltage range of the MAX1149?
The MAX1149 operates from a single +2.7V to +3.6V supply.
- What types of analog inputs does the MAX1149 support?
The MAX1149 supports software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
- What interface does the MAX1149 use for communication?
The MAX1149 uses a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices.
- How does the MAX1149 manage power consumption?
The MAX1149 features hardware shutdown and two software power-down modes to reduce power consumption, with supply current under 120µA during quick turn-on.
- What is the internal reference voltage of the MAX1149?
The internal reference voltage of the MAX1149 is +2.500V.
- What is the maximum operating temperature of the MAX1149?
The maximum operating temperature of the MAX1149 is 85°C.
- In what package is the MAX1149 available?
The MAX1149 is available in a 20-pin TSSOP package.
- What is the power dissipation of the MAX1149?
The power dissipation of the MAX1149 is 879 mW.
- Is there an evaluation kit available for the MAX1149?
