MAX1098/MAX1099 10-Bit Serial-Output Temperature Sensors with 5-Channel ADC General Description Features The MAX1098/MAX1099 implement both local and Local and Remote Temperature Sensing remote temperature sensing with 10-bit resolution, using 12-Bit Resolution for Temperature and 10-Bit +5V and +3V supply voltages, respectively. Accuracy Resolution for Voltage Inputs is 1C from 0C to +70C, with no calibration needed. 1C Accuracy from -40C to +85C The devices feature an algorithmic switched-capacitor Fully Differential Inputs analog-to-digital converter (ADC), on-chip clock, and Single-Supply Operation 3-wire serial interface compatible with SPI, QSPI, and +4.75V to +5.25V (MAX1098) MICROWIRE . +2.7V to +3.6V (MAX1099) The MAX1098/MAX1099 also perform fully differential 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface voltage measurements with 10-bit resolution and separate track-and-hold (T/N) for positive and negative inputs. Both Internal Precision Voltage Reference 2.50V (MAX1098) devices accept versatile input modes consisting of two 3-channel signal pairs, five 1-channel signals relative to 1.20V (MAX1099) AIN5, or V /4 relative to ground. An external reference Space-Saving 16-Pin SSOP Package DD may be used for more accurate voltage measurements. Typical power consumption is only 1.3mW (MAX1099). A Ordering Information shutdown mode and two standby modes provide multiple strategies for prolonging battery life in portable applica- TEMP. SENSE TEMP PIN- tions that require limited sampling throughput. PART ACCURACY RANGE PACKAGE (C) The MAX1098/MAX1099 are available in 16-pin SSOP packages. MAX1098CEAE+ -40C to +85C 16 SSOP 4.0 MAX1099CEAE+ -40C to +85C 16 SSOP 4.0 Applications Temperature/Voltage Supervision of +Denotes a lead(Pb)-free/RoHS-compliant package. Workstations and Communications Equipment Hand-Held Instruments QSPI is a trademark of Motorola, Inc. Medical Equipment MICROWIRE is a registered trademark of National Semiconductor Corp. Industrial Process Control Pin Configuration Temperature Error MAX1098 TEMPERATURE ERROR TOP VIEW + vs. INTERNAL DIODE TEMPERATURE AIN1 1 16 AIN0 1.0 SHO 2 15 AIN5 AIN2 3 14 REF 0.5 MAX1098 AIN3 4 13 GND MAX1099 AIN4 5 12 V DD 0 GND 6 11 SCLK SSTRB 7 10 DIN -0.5 CS 8 9 COUT SSOP -1.0 -60 -40 -20 0 20 40 60 80 100 Typical Operating Circuit appears at end of data sheet. TEMPERATURE (C) 19-1728 Rev 1 3/12 TEMPERATURE ERROR (C) MAX1098/9-29MAX1098/MAX1099 10-Bit Serial-Output Temperature Sensors with 5-Channel ADC Absolute Maximum Ratings V to GND ............................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD A SHO to GND............................................. -0.3V to (V + 0.3V) 16-Pin SSOP (derate 7.1mW/C above +70C) .......571.4mW DD Analog Inputs to GND Operating Temperature Range (AIN0AIN5, REF) ................................ -0.3V to (V + 0.3V) MAX109 CEAE .............................................. -40C to +85C DD Digital Inputs to GND (DIN, SCLK, CS) ... -0.3V to (V + 0.3V) Junction Temperature ......................................................+150C DD Digital Outputs to GND (DOUT, SSTRB) . -0.3V to (V + 0.3V) Storage Temperature Range ............................ -65C to +150C DD Digital Output Sink Current ................................................25mA Lead Temperature (soldering, 10s) .................................+300C Maximum Current into Any Pin...........................................50mA Soldering Temperature (reflow) .......................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (V = +4.75V to +5.25V (MAX1098), V = +2.7V to +3.6V (MAX1099), external reference, V = +2.5V (MAX1098), V = +1.2V DD DD REF REF (MAX1099), f = 2.5MHz, T = T to T , unless otherwise noted. Typical values are at T = +25C.) SCLK A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) Resolution RES 10 Bits Relative Accuracy (Note 2) INL 1 LSB Differential Nonlinearity DNL 1 LSB Offset Error Inputs AIN0AIN5 1 LSB Offset Temperature Coefficient 10 V/C Gain Error Inputs AIN0AIN5, offset nulled 1 LSB V /4 Absolute Error 1 LSB DD Gain Temperature Coefficient 2 ppm/C Channel-to-Channel Offset 0.25 LSB Matching CONVERSION RATE Voltage measurement 1.1 t Conversion Time (Note 3) ms CONV Temperature measurement 2.2 t Track/Hold Acquisition Time 16 s ACQ t Aperture Delay 30 ns APR f Internal Clock Frequency 57.6 62.3 65.5 kHz CLK ANALOG INPUTS (AIN0AIN5) Input Voltage Range (Note 4) Measurement with respect to IN-, Figure 1 -2V +2V V REF REF Common-Mode Range V V DD Input Current (Note 5) 0.1 5 A Input Capacitance 16 pF Maxim Integrated 2 www.maximintegrated.com