Rainbow Electronics DS18B20-PAR - Manual (Page 18)

DS18B20-PAR
18 of 19
AC ELECTRICAL CHARACTERISTICS (-55°C to +100°C; V
PU
=3.0V to 5.5V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
Temperature Conversion t
CONV
9-bit resolution 93.75 ms 1
Time 10-bit resolution 187.5 ms 1
11-bit resolution 375 ms 1
12-bit resolution 750 ms 1
Time to Strong Pullup
On t
SPON
Start Convert T or
Copy Scratchpad
Command Issued
10 µs
Time Slot t
SLOT
60 120 µs 1
Recovery Time t
REC
1 µs 1
Write 0 Low Time r
LOW0
60 120 µs 1
Write 1 Low Time t
LOW1
1 15 µs 1
Read Data Valid t
RDV
15 µs 1
Reset Time High t
RSTH
480 µs 1
Reset Time Low t
RSTL
480 960 µs 1,2
Presence Detect High t
PDHIGH
15 60 µs 1
Presence Detect Low t
PDLOW
60 240 µs 1
Capacitance C
IN/OUT
25 pF
NOTES:
1. Refer to timing diagrams in Figure 17.
2. If
t
RSTL
> 960
µ
s, a power on reset may occur.
TYPICAL PERFORMANCE CURVE Figure 16
DS18B20-PAR Typical Error Curve
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 10 20 30 40 50 60 70
Reference Temp (C)
Therm
om
eter E
rror (C)
Mean Error
+3
σ
Error
-3
σ
Error