The TMP03/TMP04 is a monolithic temperature detector that generates a modulated serial digital output that varies in direct proportion to the temperature of the device. An onboard sensor generates a voltage precisely proportional to absolute temperature which is compared to an internal voltage reference and input to a precision digital modulator. The ratiometric encoding format of the serial digital output is independent of the clock drift errors common to most serial modulation techniques such as voltage-to- frequency converters. Overall accuracy is ±1.5°C (typical) from -25°C to +100°C, with excellent transducer linearity. The digital output of the TMP04 is CMOS/TTL compatible, and is easily interfaced to the serial inputs of most popular microprocessors. The open-collector output of the TMP03 is capable of sinking 5 mA. The TMP03 is best suited for systems requiring isolated circuits utilizing optocouplers or isolation transformers.

The TMP03 and TMP04 are specified for operation at supply voltages from 4.5 V to 7 V. Operating from +5 V, supply current (unloaded) is less than 1.3 mA.

The TMP03/TMP04 are rated for operation over the -40°C to +100°C temperature range in the low cost TO-92, SO-8, and TSSOP-8 surface mount packages. Operation extends to +150°C with reduced accuracy.

The TMP03/TMP04 is a powerful, complete temperature measurement system with digital output, on a single chip. The onboard temperature sensor follows in the footsteps of the TMP01 low power programmable temperature controller, offering excellent accuracy and linearity over the entire rated temperature range without correction or calibration by the user.

The sensor output is digitized by a first-order sigma-delta modulator, also known as the "charge balance" type analog-to-digital converter. This type of converter utilizes time-domain oversampling and a high accuracy comparator to deliver 12 bits of effective accuracy in an extremely compact circuit.

Basically, the sigma-delta modulator consists of an input sampler, a summing network, an integrator, a comparator, and a 1-bit DAC. Similar to the voltage-to-frequency converter, this architecture creates in effect a negative feedback loop whose intent is to minimize the integrator output by changing the duty cycle of the comparator output in response to input voltage changes. The comparator samples the output of the integrator at a much higher rate than the input sampling frequency, called oversampling. This spreads the quantization noise over a much wider band than that of the input signal, improving overall noise performance and increasing accuracy.

The modulated output of the comparator is encoded using a circuit technique (patent pending) which results in a serial digital signal with a mark-space ratio format that is easily decoded by any microprocessor into either degrees centigrade or degrees Fahrenheit values, and readily transmitted or modulated over a single wire. Most importantly, this encoding method neatly avoids major error sources common to other modulation techniques, as it is clock-independent.

Part#	Temp Res(°C/LSB)	25°C Temp Error (Deg C)	Resolution (Bits)	# Chan	DAC Outputs	Interface	Temp Range(s)	Supply Voltage Range	Product Description	Price* (1000-4999)	Sensor Output
TMP03	0.3	±3	16	0	---	PWM	-40 to +100	+4.5V to +7V	Serial PWM-Output Temperature Sensor w/ Open-Collector Output	$3.27	PWM
TMP04	0.3	±3	16	0	---	PWM	-40 to +100	+4.5V to +7V	Serial PWM-Output Temperature Sensor w/ CMOS/TTL Output	$3.27	PWM
AD7814	0.25	n/a	10	0	---	Serial, SPI	-55 to +125	+2.7V to +5.5V	10-Bit Digital Temperature Sensor in 6-Lead SOT-23	$1.00	DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM)
AD7414	0.25	n/a	10	0	---	I2C, Serial	-40 to +125	+2.7V to +5.5V	SMBus/I2C, 10-Bit Digital Temperature Sensor in 6-Pin SOT w/ SMBus Alert and Over-Temperature Pin	$1.04	I²C ®, SMBus
AD7415	0.25	±2	10	0	---	I2C, Serial	-40 to +125	+2.7V to +5.5V	SMBus/I2C, 10-Bit Digital Temperature Sensor in 5-Pin SOT	$1.04	I²C ®, SMBus
AD7416	0.25	n/a	10	0	---	I2C, Serial	-40 to +125	+2.7V to +5.5V	10-Bit Temperature-to-Digital Converter, -40°C to +125°C, ±2°C Accuracy	$1.00	I²C ®
AD7314	0.25	±1	10	0	---	Serial, SPI	-35 to +85	+2.65V to +5.5V	Low Voltage, 10-Bit Digital Temperature Sensor in 8-Lead µSOP	$0.66	DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM)
AD7818	0.25	±1	10	1	---	Serial, SPI	-40 to +85	+2.7V to +5.5V	9 µs, 10-Bit ADC w/ On-Chip Temperature Sensor & Over-Temperature Output	$2.34	MICROWIRE (TM), QSPI (TM), SPI (TM)
AD7418	0.25	±1	10	2	---	I2C, Serial	-40 to +125	+2.7V to +5.5V	10-Bit ADC, Programmable Hi-Low Temp Limits w/ Over-Temp Alert, , Auto Pwr Dwn @ EOC	$2.34	I²C ®
ADT7316	0.25	±0.5	10	3	12-Bit x 4	I2C, I2C/SPI, Serial, SM Bus, SPI	-40 to +120	+2.7V to +5.5V	SPI/I2C® Compatible,10-Bit Digital Temperature Sensor With Quad Voltage-Output 12-Bit DAC	$6.46	I²C ®, QSPI (TM), SMBus, SPI (TM)
ADT7317	0.25	±0.5	10	3	10-Bit x 4	I2C, I2C/SPI, SM Bus, SPI	-40 to +120	+2.7V to +5.5V	SPI/I2C® Compatible,10-Bit Digital Temperature Sensor w/ Quad 10-Bit Voltage Output DAC	$3.51	DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SMBus, SPI (TM)
ADT7318	0.25	+0.5	10	3	8-Bit x 4	I2C, I2C/SPI, Serial, SM Bus, SPI	-40 to +120	+2.7V to +5.5V	SPI/I2C® Compatible,10-Bit Digital Temperature Sensor & Quad Voltage Output 8-Bit DAC	$2.23	DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SMBus, SPI (TM)
AD7817	0.25	±1	10	4	---	Serial, SPI	-40 to +85	+2.7V to +5.5V	4-Channel, 9 µs, 10-Bit ADC with On-Chip Temperature Sensor & Over-Temperature Flag	$3.29	MICROWIRE (TM), QSPI (TM), SPI (TM)
AD7417	0.25	±1	10	5	---	I2C, Serial	-40 to +125	+2.7V to +5.5V	4-Channel, 10-Bit ADC w/ on-Chip Temperature Sensor, Programmable Setpoints, and Overtemp Flag Out	$2.99	I²C ®
ADT7516	0.25	n/a	10	7	12-Bit x 4	I2C/SPI, Serial, SPI	-40 to +120	+2.7V to +5.5V	SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 12-Bit Voltage DAC Control Outputs	$7.74	I²C ®, SPI (TM)
ADT7411	0.25	+0.5	10	10	n/a	I2C, I2C/SPI, Serial, SPI	-40 to +120	+2.7V to +5.5V	SPI®-/I2C®-Compatible, 10-Bit ADC w/ Local & Remote Temp Msmt, 8 GP Analog Inputs, and VDD monitor	$2.22	DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SPI (TM)
ADT7408	0.0625	±1	12	0	---	I2C, SM Bus	-20 to +125	+3V to +3.6V	± 2 Degree C Accurate, 12-Bit Digital Temperature Sensor	$0.87	I²C ®, SMBus
ADT75	0.0625	n/a	12	0	---	I2C, Serial, SM Bus	-55 to +125	+3V to +5.5V	±1 Deg C Accuracy, 12-Bit Digital Temperature Sensor	$0.66	I²C ®, SMBus
ADT7301	0.03125	n/a	13	0	---	Serial, SPI	-40 to +150	+2.7V to +5.5V	13-Bit, ±1ºC Accurate, MicroPower Digital Temperature Sensor in 6-Lead SOT-23 and 8-Lead MSOP	$1.21	DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM)
ADT7302	0.03125	n/a	13	0	---	Serial, SPI	-40 to +125	+2.7V to +5.25V	±2°C Accurate, MicroPower Digital Temperature Sensor in 6-Lead SOT-23	$0.78	DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM)
TMP06	0.025	±0.5	12	0	---	PWM	-40 to +150	+2.7V to +5.5V	0.5°C Accurate PWM Temperature Sensor in 5-Lead SC-70 or SOT-23 w/ Open Drain Output	$0.66	PWM
TMP05	0.025	±0.5	12	0	---	PWM	-40 to +150	+2.7V to +5.5V	0.5°C Accurate PWM Temperature Sensor in 5-Lead SC-70 or SOT-23 w/ CMOS/TTL Output	$0.66	PWM
TMP01	n/a	±0.5	n/a	0	---	Analog, Switch (Off/On)	-55 to +125	+4.5V to +13.2V	Low Power, Programmable Temperature Sensor/ Controller w/ upper/lower setpoints	$2.67	+5mV/°K, Thermostatic Switch

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.