The AD8494/AD8495/AD8496/AD8497 are precision instrumentation amplifiers with thermocouple cold junction compensators on an integrated circuit. They produce a high level (5 mV/°C) output directly from a thermocouple signal by combining an ice point reference with a precalibrated amplifier. They can be used as standalone thermometers or as switched output setpoint controllers using either a fixed or remote setpoint control.The AD8494/AD8495/AD8496/AD8497 can be powered from a single-ended supply (less than 3 V) and can measure temperatures below 0°C by offsetting the reference input. To minimize self-heating, an unloaded AD849x typically operates with a total supply current of 180 μA, but it is also capable of delivering in excess of ±5 mA to a load.The AD8494 and AD8496 are precalibrated by laser wafer trimming to match the characteristics of J type (iron-constantan) thermocouples; the AD8495 and AD8497 are laser trimmed to match the characteristics of K type (chromel-alumel) thermo-couples. See Table 1 on the data sheet for the optimized ambient temperature range of each part.The AD8494/AD8495/AD8496/AD8497 allow a wide variety of supply voltages. With a 5 V single supply, the 5 mV/°C output allows the devices to cover nearly 1000 degrees of a thermo-couple’s temperature range.The AD8494/AD8495/AD8496/AD8497 work with 3 V supplies, allowing them to interface directly to lower supply ADCs. They can also work with supplies as large as 36 V in industrial systems that require a wide common-mode input range.Product Highlights Complete, precision laser wafer trimmed thermocouple signal conditioning system in a single IC package. Flexible pinout provides for operation as a setpoint controller or as a standalone Celsius thermometer. Rugged inputs withstand 4 kV ESD and provide over-voltage protection (OVP) up to VS ± 25 V. Differential inputs reject common-mode noise on the thermocouple leads. Reference pin voltage can be offset to measure 0°C on single supplies. Available in a small, 8-lead MSOP that is fully RoHS compliant. div#landing_page_sec ul { padding:0 0 15px 10px; margin:0px; } div#landing_page_sec li { padding:3px 0 2px 20px; margin:0px; list-style:none; background:url(/static/imported-files/embedded_html/images/li_img.gif) no-repeat 7px 9px; display:block; color:#000000; font-family: Arial, Helvetica, sans-serif; }Applications K type thermocouple temperature measurement Setpoint controller Celsius thermometer Universal cold junction compensator White goods (oven, stove top) temperature measurements Exhaust gas temperature sensing Catalytic converter temperature sensing

Microprocessor Supervisory Circuit Features:Pin-compatible with MAX1232 and Dallas DS1232Adjustable precision voltage monitor with 4.5 V and 4.75 V optionsAdjustable strobe monitor with 150 ms, 600 ms, or 1.2 sec optionsNo external componentsSpecified from 40C to +85C

Dual, 0.2 V/C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier Features: Low input offset voltage: 125 µV (maximum) Low input offset voltage drift 0.2 µV/°C (typical) 1.5 µV/°C (maximum) Ultralow supply current: 500 µA per amplifier Fully specified at VS = 3 V, 5 V, ±5 V High speed performance −3 dB bandwidth: 105 MHz Slew rate: 160 V/µs Settling time to 0.1%: 35 ns Rail-to-rail outputs See data sheet for additional featuresADA4805-2-EP supports defense and aerospace applications (AQEC standard) Download the ADA4805-2-EP data sheet (pdf) Extended industrial temperature range (−55°C to +125°C) Controlled manufacturing baseline 1 assembly/test site 1 fabrication site Enhanced product change notification Qualification data available upon request V62/16621 DSCC Drawing Number

10 MHz, 14.5 nV/Hz, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifier Features: Power supply rejection ratio (PSRR): 98 dB minimum  Common-mode rejection ratio (CMRR): 95 dB minimum Offset voltage: 120 μV maximum Single-supply operation: 2.7 V to 5.5 V  Dual-supply operation: ±1.35 V to ±2.75 V  Wide bandwidth: 10 MHz  Rail-to-rail input and output  Low noise 2 μV p-p from 0.1 Hz to 10 Hz  14.5 nV/√Hz at 1 kHz  Very low input bias current: 2 pA maximum

18 V, 725 A, 4 MHz CMOS RRIO Operational Amplifier Features: Low power at high voltage (18 V): 725 μA maximum Low offset voltage: 2.2 mV maximum over entire common-mode range Low input bias current: 15 pA maximum Gain bandwidth product: 4 MHz typical at Av = 100 Unity-gain crossover: 4 MHz typical −3 dB closed-loop bandwidth: 2.1 MHz typical Single-supply operation: 3 V to 18 V Dual-supply operation: ±1.5 V to ±9 V Unity-gain stable

LINE - RS232, RS485, RS422 ROHS COMPLIANT: YES

VOLT REF, 2.048V, MSOP, -40 TO 125DEG C ROHS COMPLIANT: YES

VOLT REF, 2.048V, MSOP, -40 TO 125DEG C ROHS COMPLIANT: YES

OPERATIONAL AMPLIFIER;

ANALOGUE SWITCHES;