• 简体中文
• English

MAX1298A, MAX1298B, MAX1298C：12-Bit Serial-Output Temperature Sensors with 5-Channel ADC

12-Bit ADCs with ±1° C Internal Temperature Sensor Also Measure Remote Temperatures

The MAX1298/MAX1299 implement local and remote temperature sensing with 12-bit resolution, using +5V and +3V supply voltages, respectively. Accuracy is ±1°C from 0 to +70°C, with no calibration needed. The devices feature an algorithmic switched-capacitor analog-to-digital converter (ADC), an on-chip clock, and a 3-wire serial interface compatible with SPI, QSPI™, and MICROWIRE®. The MAX1298/MAX1299 also perform fully differential voltage measurements with 12-bit resolution and separate track-and-hold (T/H) for positive and negative inputs. Both devices accept versatile input modes consisting of two 3-channel signal pairs, five 1-channel signals relative to an AIN5, or VDD/4 relative to ground. An external reference may be used for more accurate voltage measurements. Typical power consumption is only 1.3mW (MAX1299). A shutdown mode and two standby modes provide multiple strategies for prolonging battery life in portable applications that require limited sampling throughput. The MAX1298/MAX1299 are available in 16-pin SSOP packages.

Key Features Local and Remote Temperature Sensing 12-Bit Resolution for Temperature and Voltage Inputs ±1°C Accuracy from -40°C to +85°C Fully Differential Inputs Single-Supply Operation +4.75V to +5.25V (MAX1298) +2.7V to +3.6V (MAX1299) 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface Internal Precision Voltage Reference 2.50V (MAX1298) 1.20V (MAX1299) Space-Saving 16-Pin SSOP Package

MAX1298, MAX1298A, MAX1298B, MAX1298C, MAX1299, MAX1299A, MAX1299B, MAX1299C: Functional Diagram Applications/Uses Handheld Instruments (PDAs, Palmtops) Industrial Process Controls Medical Equipment

DataSheet

Parametrics

Related Products

• MAX111：Low-Cost, 2-Channel, ±14-Bit Serial ADCs

Ordering Information