MAX1298

 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

V_DD to GND...........................-0.3V to +6V
SHO to GND...............................................-0.3V to (V_DD + 0.3V)
Analog Inputs to GND
     (AIN0, AIN1, AIN2, AIN3, AIN4,
     AIN5, REF)............................................-0.3V to (V_DD + 0.3V)
Digital Inputs to GND (DIN, SCLK, CS).......-0.3V to (V_DD + 0.3V)
Digital Outputs to GND (DOUT, SSTRB)......-0.3V to (V_DD + 0.3V)
Digital Output Sink Current ....................25mA
Maximum Current into Any Pin..................50mA
Continuous Power Dissipation (T_A = +70°C)
   16-Pin SSOP (derate 8.00mW/°C above +70°C) .....667mW
Operating Temperature Range
   MAX129_ _EAE............................................-40°C to +85°C
Junction Temperature......................+150°C
Storage Temperature Range ......................-65°C to +150°C
Lead Temperature (soldering, 10s) ............+300°C

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 a floating common, 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.