DS56 Dallas Semiconductor, DS56 Datasheet

DS56

Manufacturer Part Number

DS56

Description

Manufacturer

Dallas Semiconductor

Datasheets

1.DS56.pdf (6 pages)

2.DS56.pdf (6 pages)

Specifications of DS56

Case

SOP8

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Current page: 1 of 6
Download datasheet (96Kb)

FEATURES

§ Factory calibrated for sensitivity of +6.20

§ Measurement range of -40°C to +125°C

§ Integrated temperature sensor and voltage

§ Two independent temperature setpoints with

§ Narrow-body SO8 (150-mil) package

§ Wide power supply range (2.7V

§ Functionally compatible with LM56xIM

§ Applications include monitoring disk drives,

DESCRIPTION

The DS56 Dual Temperature Comparator has two independent open-drain thermostat outputs and

respective trip point inputs. The trip points are set with external resistors that divide down the 1.25V

internal bandgap voltage reference. The voltage resulting from this resistive division is compared with the

voltage corresponding to the device’ s junction temperature to define the thermostat output logic state. The

internal temperature sensor has a typical sensitivity of +6.2mV/°C and DC offset of +395 mV at 0°C.

Both thermostat outputs have 5°C of hysteresis.

For applications that require temperature measurement as well as control, the temperature sensor voltage

is brought out to a pin.

The DS56 is packaged in a compact 150-mil, 8-pin SOIC. Applications include disk drives, printers,

office equipment, HVAC, appliances, or any power/cost/temperature-sensitive environments.

www.dalsemi.com

mV/°C and thermometer accuracy of ±2.0°C

over the 0°C to 85°C range and ±3°C over the

40°C to 0°C and +85°C to +125°C range

reference

respective logic outputs with set hysteresis

5.5V)

printers, office equipment, HVAC,

appliances, or any power/cost/temperature-

sensitive environments.

1 of 6

Dual Temperature Comparator

PIN ASSIGNMENT

PIN DESCRIPTION

GND

OUT2

OUT1

REF

TEMP

DS56S 8-Pin SOIC (150-mil)

GND

REF

- Bandgap Voltage Reference

- Temperature Trip Point 2

- Temperature Trip Point 1

- Ground

- Temp Sensor Output Voltage

- Thermostat output for Trip

- Power Supply Voltage (2.7V

to 5.5V)

Output

Point 2

Point 1

OUT1

OUT2

TEMP

PRELIMINARY

102299

DS56

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