Datasheet

DS1722
ELECTRICAL CHARACTERISTICS: DIGITAL THERMOMETER
11 of 14
(-55°C to +120°C, 2.65V ≤ V
DDA
≤ 5.5V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
-40°C to +85°C ±2.0
Thermometer Error T
°C
ERR
-55°C to +120°C ±3.0
Resolution 8 12 bits
8-bit conversions 67.5 75
9-bit conversions 125 150
ms
Conversion Time t
CONVT
10-bit conversions 250 300
11-bit conversions 500 600
12-bit conversions 1000 1200
AC ELECTRICAL CHARACTERISTICS: 3-WIRE INTERFACE
(-55°C to +120°C, 2.65V ≤ V
DD
≤ 5.5V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
Data to SCLK Setup t 35 ns 5, 6
DC
SCLK to Data Hold t 35 ns 5, 6
CDH
SCLK to Data Valid t 80 ns 5, 6, 7
CDD
SCLK Low Time t 100 ns 6
CL
SCLK High Time t 100 ns 6
CH
SCLK Frequency t DC 5.0 MHz 6
CLK
SCLK Rise and Fall t
R
, t 200 ns
F
CE to SCLK Setup t 400 ns 6
CC
SCLK to CE Hold t 100 ns 6
CCH
CE Inactive Time t 400 ns 6
CWH
CE to Output High Z t 40 ns 5, 6
CDZ
SCLK to Output High Z t 40 ns 5, 6
CCZ
TIMING DIAGRAM: 3-WIRE READ DATA TRANSFER Figure 9