ds7505 Maxim Integrated Products, Inc., ds7505 Datasheet - Page 3

• Manufacturer Part Number: ds7505
• Description: High-precision Digital Thermometer And Thermostat
• Manufacturer: Maxim Integrated Products, Inc.

AC ELECTRICAL CHARACTERISTICS (continued)
(1.7V ≤ V
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10: After this period, the first clock pulse is generated.
Note 11: The DS7505 provides an internal hold time of at least 75ns on the SDA signal to bridge the undefined region of SCL’s
Note 12: For example, if C
Note 13: This timeout applies only when the DS7505 is holding SDA low. Other devices can hold SDA low indefinitely and the
EEPROM Data Retention
Bus Free Time Between a STOP
and START Condition
START and Repeated START
Hold Time from Falling SCL
Low Period of SCL
High Period of SCL
Repeated START Condition
Setup Time to Rising SCL
Data-Out Hold Time from Falling
SCL
Data-In Setup Time to Rising
Rise Time of SDA and SCL
(Receive)
Fall Time of SDA and SCL
(Receive)
Spike Suppression Filter Time
(Deglitch Filter)
STOP Setup Time to Rising SCL
Capacitive Load for Each Bus
Line
Input Capacitance
Serial Interface Reset Time
DD
PARAMETER
All voltages are referenced to ground.
Internal heating caused by O.S. loading causes the DS7505 to read approximately 0.5°C higher if O.S. is sinking the
max-rated current.
Specified in 12-bit conversion mode. Quantization error must be considered when converting in lower resolutions.
I
I
I
V
E
See the timing diagram (Figure 1). All timing is referenced to 0.9 x V
falling edge.
DS7505 does not reset.
DD
DD
DD
DD
2
≤ 3.7V, T
Copy occurs at +25°C.
specified with O.S. pin open.
specified with V
specified with A0, A1, A2 = 0V or V
must be > 2.0V.
_______________________________________________________________________________________
A
= -55°C to +125°C, unless otherwise noted.)
B
Digital Thermometer and Thermostat
= 300pF, then t
DD
at 3.0V and SDA, SCL = 3.0V, T
SYMBOL
t
TIMEOUT
t
t
t
t
t
HD:STA
HD:DAT
SU:STO
SU:STA
SU:DAT
t
t
t
EEDR
t
HIGH
LOW
t
BUF
C
C
t
t
SS
R
F
B
I
R(MIN)
-40°C to +125°C (Note 8)
(Note 9)
(Notes 9, 10)
(Note 9)
(Note 9)
(Note 9)
(Notes 9, 11)
(Note 9)
(Notes 9, 12)
(Notes 9, 12)
(Note 9)
SDA time low (Note 13)
DD
= t
.
F(MIN)
= 50ns.
CONDITIONS
A
= -55°C to +85°C.
DD
and 0.1 x V
DD
.
0.1C
0.1C
20 +
20 +
MIN
600
600
100
600
1.3
1.3
0.6
10
75
0
0
B
B
TYP
5
MAX
300
300
400
325
0.9
50
UNITS
Years
ms
pF
pF
µs
ns
µs
µs
ns
µs
ns
ns
ns
ns
ns
3