LM77CIM-3 National Semiconductor, LM77CIM-3 Datasheet - Page 5

• Manufacturer Part Number: LM77CIM-3
• Description: IC, TEMP SENSOR, 10BIT, ± 1.5°C, 8-SOIC
• Manufacturer: National Semiconductor

Specifications of LM77CIM-3

• Ic Output Type: Digital
• Sensing Accuracy Range: ± 1.5°C
• Supply Current: 250µA
• Supply Voltage Range: 3V To 5.5V
• Resolution (bits): 10bit
• Sensor Case Style: SOIC
• No. Of Pins: 8
• Accuracy %: 3°C
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

I
V
t
t
t
t
t
t
OH
OF
1
2
3
4
5
Symbol
OL
Serial Bus Digital Switching Characteristics
Unless otherwise noted, these specifications apply for +V
for LM77CIM-3 and LM77CIMM-3, CL (load capacitance) on output lines = 80 pF unless otherwise specified. Boldface limits apply
for T
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
Note 2: When the input voltage (V
maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 5 mA to four.
Note 3: Reflow temperature profiles are different for lead-free and non-lead-free packages.
Note 4: Human body model, 100 pF discharged through a 1.5 kΩ resistor. Machine model, 200 pF discharged directly into each pin.
Note 5: LM77 θ
250°C/W for the MSOP-8 (MUA08A) package.
Note 6: While the LM77 has a full-scale-range in excess of 128°C, prolonged operation at temperatures above 125°C is not recommended.
Note 7: Both part numbers of the LM77 will operate properly over the +V
accuracy at their nominal supply voltage. Accuracy will typically degrade 1°C/V of variation in +V
Note 8: Typicals are at T
Note 9: Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
Note 10: 9 bits + sign, two's complement
Note 11: This specification is provided only to indicate how often temperature data is updated. The LM77 can be read at any time without regard to conversion
state (and will yield last conversion result). If a conversion is in process it will be interrupted and restarted after the end of the read.
Note 12: For best accuracy, minimize output loading. Higher sink currents can affect sensor accuracy with internal heating. This can cause an error of 0.64°C at
full rated sink current and saturation voltage based on junction-to-ambient thermal resistance.
Symbol
A
= T
J
SCL (Clock) Period
Data in Set-Up Time to SCL High
Data Out Stable after SCL Low
SDA Low Set-Up Time to SCL Low (Start Condition)
SDA High Hold Time after SCL High (Stop Condition)
= T
JA
Logic “1” Output Leakage Current
Low Level Output Voltage
T_CRIT_A Output Saturation Voltage I
T_CRIT_A Delay
Output Fall Time
MIN
(thermal resistance, junction-to-ambient) when attached to a printed circuit board with 2 oz. foil is: 200°C/W for the SOP-8 (M08A) package,
to T
A
MAX
= 25°C and represent most likely parametric norm.
; all other limits T
Parameter
I
) at any pin exceeds the power supplies (V
Parameter
A
= T
J
= +25°C, unless otherwise noted.
V
I
(Note
C
I
OL
OUT
O
OH
L
= 3 mA
= 400 pF
= 3 mA
S
Conditions
= + V
= 4.0 mA
=+5 Vdc ±10% for LM77CIM-5 and LM77CIMM-5, +V
12)
S
supply voltage range of 3V to 5.5V . The devices are tested and specified for rated
S
I
< GND or V
5
I
> +V
Conditions
S
S
) the current at that pin should be limited to 5 mA. The 20 mA
as it varies from the nominal value.
(Note
Typical
8)
(Note
Typical
(Note
Limits
8)
250
0.4
0.8
10
10013604
1
9)
(Note
(Note
Limits
100
100
100
2.5
S
0
=+3.3 Vdc ±10%
Conversions
(max)
15)
9)
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μA (max)
ns (max)
V (max)
V (max)
(Limit)
Units
μs(min)
ns(min)
ns(min)
ns(min)
ns(min)
(Limit)
Units