Maxim MAX14921ECS+T

Монитор батареиMulti-Chemistry-40°C ~ 85°C (TA)

Overview

3.5- And 4.5-Digit, Single-Chip ADCs With LCD Drivers The MAX1492/MAX1494 low-power, 3.5- and 4.5-digit, analog-to-digital converters (ADCs) with integrated liquid crystal display (LCD) drivers operate from a single 2.7V to 5.25V power supply. They include an internal reference, a high-accuracy on-chip oscillator, and a triplexed LCD driver. An internal charge pump generates the negative supply needed to power the integrated input buffer for single-supply operation. The ADC is configurable for either a �2V or �200mV input range and outputs its conversion results to an LCD and/or to a microcontroller (�C). �C communication is facilitated through an SPI�-/QSPI�-/MICROWIRE�-compatible serial interface. The MAX14921ECS+ is a 3.5-digit (�1999 count) device, and the MAX1494 is a 4.5-digit (�19,999 count) device.

EXTERNAL REFERENCE (INTREF BIT = 0, bypass REF+ and REF- to GND with 0.1�F or larger capacitors) REF Input Voltage Absolute REF Input Voltage to GND V

Features

Applications

• Golf carts
• Electric-powered machinery
• Fork lifts
• Grid power infrastructure
• Cell phone towers
• A/C power substations
• Internet infrastructure equipment
• Aviation ground support systems
• Tower communications
• Weather stations