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参数资料
| 型号： | TC1068MQR |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | QSOP-16 |
| 文件页数： | 8/14页 |
| 文件大小： | 76K |
| 代理商： | TC1068MQR |
3
TC1068
SMBus Thermal Sensor with
External Diode Input
TC1068-1 2/8/99
2001 Microchip Technology Inc. DS21352A
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
IDIODE-HIGH
External Diode
(D+) – (D–) ~ 0.65V
—
100
—
A
High Source Current
IDIODE-LOW
External Diode
(D+) – (D–) ~ 0.65V
—
10
—
A
Low Source Current
VD-SOURCE
D– Source Voltage
—
0.7
—
V
tCONV
Conversion Time
From CHIP STOP to Conv.
54
83
112
msec
Complete (Note 2)
CR
Conversion Rate Accuracy
See Conversion Rate Register Desc.
–35
—
+35
%
2-Wire SMBus Interface
VIH
Logic Input High
2.2
——
V
VIL
Logic Input Low
—
0.8
V
VOL
SDA Output Low
IOL = 2 mA (Note 3)
—
0.4
V
IOL = 4 mA (Note 3)
—
0.6
V
CIN
Input Capacitance SDA, SCL
—
5
—
pF
ILEAK
I/O Leakage
–1
0.1
1
A
NOTES: 1. Operating current is an average value (including external diode injection pulse current) integrated over multiple conversion cycles. Transient
current may exceed this specification.
2. For true reccurring conversion time see Conversion Rate register description.
3. Output current should be minimized for best temperature accuracy. Power dissipation within the TC1068 will cause self-heating and
temperature drift error.
4. Refer to Application Note 64.
SMBus PORT AC TIMING: VDD = 3.3V, –55 ≤ (TA = TJ) ≤ 125°C; CL = 80 pF, unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
fSMB
SMBus Clock Frequency
10
—
100
KHz
tLOW
Low Clock Period
10% to 10%
4.7
—
sec
tHIGH
High Clock Period
90% to 90%
4
—
sec
tR
SMBus Rise Time
10% to 90%
—
1,000
nsec
tF
SMBus Fall Time
90% to 10%
—
300
nsec
tSU(START)
Start Condition Setup Time
90% SCL to 10% SDA
4
—
sec
(for Repeated Start Condition)
tH(START)
Start Condition Hold Time
4
—
sec
tSU-DATA
Data in Setup Time
1000
—
nsec
tH-DATA
Data in Hold Time
1250
—
nsec
tSU(STOP)
Stop Condition Setup Time
4
—
sec
tIDLE
Bus Free Time Prior to
4.7
—
sec
New Transition
ELECTRICAL CHARACTERISTICS (CONT): VDD = 3.3V, –55°C ≤ TA ≤ 125°C,unless otherwise noted.
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