Temperature Sensors, ED Inventory

MAX6654MEE+T

Analog Devices Inc.

The MAX6654 is a precise digital thermometer that reports the temperature of both a remote P-N junction and its own die. The remote junction can be a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type or 2N3906 PNP type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±1°C for multiple transistor manufacturers, with no calibration needed. The remote junction can also be a common-collector PNP, such as a substrate PNP of a microprocessor (µP).The 2-wire serial interface accepts standard System Management Bus (SMBus), Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user, or programmed to operate in a single-shot mode. The adjustable conversion rate allows the user to optimize supply current and temperature update rate to match system needs. When the conversion rate is faster than 1Hz, the conversion results are available as a 7-bit-plus-sign byte with a 1°C LSB. When the conversion rate is 1Hz or slower, the MAX6654 enters the extended mode. In this mode, 3 additional bits of temperature data are available in the extended resolution register, providing 10-bit-plus-sign resolution with a 0.125°C LSB. Singleshot conversions also have 0.125°C per LSB resolution when the conversion rate is 1Hz or slower.A parasitic resistance cancellation (PRC) mode can also be invoked for conversion rates of 1Hz or slower by setting bit 4 of the configuration register to 1. In PRC mode, the effect of series resistance on the leads of the external diode is canceled. The 11-bit conversion in PRC mode is performed in The MAX6654 default low-temperature measurement limit is 0°C. This can be extended to -64°C by setting bit 5 of the configuration register to 1.The MAX6654 is available in a small, 16-pin QSOP surface-mount package.ApplicationsComputers: Desktop, Workstation, ServerMultichip ModulesNotebook ComputersServersTest and Measurement EquipmentThin ClientsWorkstations

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
Farnell	MAX6654MEE+T	2440	2500	* $0.00	* $0.00	* $0.00	* $0.00	* $0.00	* $4.08
Mouser Electronics	MAX6654MEE+T	2475	1	$5.56	$5.28	$4.48	$4.24	$4.01	$3.91
Newark	MAX6654MEE+T	2440	1	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00

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DS1626U+T&R

Maxim Integrated

Thermostats High-Precision 3-Wire Digital Thermometer and Thermostat

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	DS1626U+T&R-ND	0							$1.96
Ameya360	DS1626U+T&R	3000		$0.00	$0.00	$0.00	$0.00	$0.00	$2.51
AVNET Asia Pacific	DS1626U+T&R	0	3000						$2.03
AVNET Europe	DS1626U+T&R	0	3000						* $6.54
AVNET Express	DS1626U+T&R	0	3000	$2.33	$2.33	$2.33	$2.33	$2.33	$2.33
Future Electronics	DS1626U+T&R	3000	3000	$0.00	$0.00	$0.00	$0.00	$0.00	$2.15
Mouser Electronics	700-DS1626UT&R	6028	1	$7.64	$5.96	$4.84	$4.16	$3.26	$2.98
Win Source	DS1626U+T&R	1240	2

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HIH-4010-004

Honeywell S&C

Board Mount Humidity Sensors - 40 C to + 85 C Humidity Sensors

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	480-4959-ND	145		$24.33	$19.86	$17.87	$15.39	$14.40	$14.40
Farnell	HIH-4010-004	32	1	* $137.86	* $115.92	* $115.92	* $115.92	* $115.92	* $115.92
Mouser Electronics	785-HIH-4010-004	0	50			$70.29	$70.06	$70.06	$70.06
Newark	HIH-4010-004	32	1	$136.67	$136.67	$136.67	$136.67	$136.67	$136.67

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