Rainbow Electronics MAX6577 - Manual

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General Description
The MAX6576/MAX6577 are low-cost, low-current tem-
perature sensors with a single-wire output. The MAX6576
converts the ambient temperature into a square wave
with a period proportional to absolute temperature (°K).
The MAX6577 converts the ambient temperature into a
square wave with a frequency proportional to absolute
temperature. The MAX6576 offers accuracy of ±3°C at
+25°C, ±4.5°C at +85°C, and ±5°C at +125°C. The
MAX6577 offers accuracy of ±3°C at +25°C, ±3.5°C at
+85°C, and ±4.5°C at +125°C.
Both devices feature a single-wire output that minimizes
the number of pins necessary to interface with a micro-
processor. The period/frequency range of the output
square wave can be selected by hard-wiring the two
time-select pins (TS0, TS1) to either V
DD or GND. The
MAX6576/MAX6577 are available in space-saving 6-pin
SOT23 packages.
Applications
Critical µP and µC Temperature Monitoring
Portable Battery-Powered Equipment
Cell Phones
Battery Packs
Hard Drives/Tape Drives
Networking and Telecom Equipment
Medical Equipment
Automotive
Features
♦ Simple Single-Wire Output
♦ Two Output Types Available
Temperature to Period (µs) (MAX6576)
Temperature to Frequency (Hz) (MAX6577)
♦ ±0.8°C Accuracy at +25°C (±3°C max)
♦ No External Components
♦ Operates from +2.7V to +5.5V Supply Voltage
♦ Low 140µA Typical Supply Current
♦ Standard Operating Temperature Range:
-40°C to +125°C
♦ Small 6-Pin SOT23 Package
MAX6576/MAX6577
SOT Temperature Sensors with
Period/Frequency Output
________________________________________________________________ Maxim Integrated Products 1
+2.7V TO +5.5V
GND TS0
TS1
OUT
0.1 µ F 0.1 µ F
V DD
MAX6576
MAX6577
µ P
GND
I/O
V CC
19-1484; Rev 0; 4/99
PART
MAX6576 ZUT
MAX6577 ZUT -40°C to +125°C
-40°C to +125°C
TEMP. RANGE
PIN-
PACKAGE
6 SOT23
6 SOT23
Typical Operating Circuit
Ordering Information
SOT
TOP MARK
AABI
AABJ
GND
TS0 N.C.
1 6 OUT
5 TS1
V
DD
MAX6576
MAX6577
SOT23-6
TOP VIEW
2
3 4
Pin Configuration