LTC1392 LINER [Linear Technology], LTC1392 Datasheet
LTC1392
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LTC1392 Summary of contents
Page 1
... A/D converter with sample-and-hold, a high accuracy bandgap reference and a 3-wire half-duplex serial interface. The LTC1392 can be programmed to measure ambient temperature, power supply voltage and an external volt- age at the differential input pins, that can also be used for current measurement using an external sense resistor. ...
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... Supply Voltage (V ) ................................................ 7V CC Input Voltage ................................. – 0. Output Voltage ............................... – 0. Operating Temperature Range LTC1392C............................................... LTC1392I........................................... – Junction Temperature.......................................... 125 C Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL C HARA TERISTICS C PARAMETER Power Supply To Digital Conversion ...
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... CLK Temperature Conversion Only Temperature Conversion Only 5V 250kHz CC CLK 250kHz CC CLK Temperature Conversion Only LTC1392 MIN TYP MAX UNITS 0 – 4.5 4.74 V 2.4 4. – 0.1 ...
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... LTC1392 RECOM ENDED OPERATING CONDITIONS The denotes specifications which apply over the operating temperature range ( for commercial grade and – industrial grade). Note 1: Absolute maximum ratings are those values beyond which the life of the device may be impaired. ...
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... IN shifted into this input. D (Pin 2): Digital Output. The A/D result is shifted out OUT of this output. CLK (Pin 3): Shift Clock. This clock synchronizes the serial data. CS (Pin 4): Chip Select Input. A logic low on this input enables the LTC1392. W BLOCK DIAGRAM INPUT 1 D SHIFT IN REGISTER ...
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... U U APPLICATIONS INFORMATION The LTC1392 is a micropower data acquisition system designed to measure temperature, an on-chip power supply voltage and a differential input voltage. The LTC1392 contains the following functional blocks: 1. On-chip temperature sensor 2. 10-bit successive approximation capacitive ADC 3. Bandgap reference 4. Analog multiplexer (MUX) 5 ...
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... LTC1392 for the next data exchange. INPUT DATA WORD Data transfer is initiated by a falling chip select (CS) signal. After CS falls, the LTC1392 looks for a start bit. Once the start bit is received, the next three bits are shifted into the W ...
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... Table 2 describes the exact relationship of output data to measured temperature or equation 1 can be used to calculate the temperature. Temperature ( C) = Output Code/4 – 130 Note that the LTC1392C is only specified for operation over the temperature range and the LTC1392I over the – range. Performance at tempera ...
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... REMARKS which will ensure that the leads and wires are at the same temperature as the surface. The thermal time constant of the LTC1392 in still air is about 22 seconds (see the graph in the Typical Performance Charateristics section). At- taching an LTC1392 to a small metal fin (which also ...
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... CS P1 LTC1392 OUTPUT 0 – OUT 0% TO 100 CLK GND CS 100pF SENSOR: PANAMETRICS #RHS 500pF 76% 1.7pF/%RH 0 FILM RESISTOR –5V 1k* MPU LTC1392 • TA03 P1.4 MPU (e.g., 8051) P1.3 P1.2 1392 TA04 ...
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... S8 Package 8-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 8 0.228 – 0.244 (5.791 – 6.197) 1 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) LTC1392 0.400* (10.160) MAX 0.130 0.005 (3.302 0.127) ...
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... R TOLERANCES FILM RESISTOR COMMENT Compatible with Standard Thermocouples ( Differential or 2-Channel Multiplexed, Single Supply Differential or 2-Channel Multiplexed, Single Supply SPI, QSPI Compatible, Single 5V or 3V, Low R 3 Pins, Current Out Pin 80 LTC1392 1 P1 MPU D IN OUT (e.g., 8051 ...