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參數(shù)資料
| 型號(hào)： | TC43 |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | LINEAR BUILDING BLOCK - VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE |
| 中文描述： | 線性積木-電壓基準(zhǔn)，雙運(yùn)算放大器，雙通道比較器關(guān)斷模式 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 75K |
| 代理商： | TC43 |
3
TC43
LINEAR BUILDING BLOCK –
VOLTAGE REFERENCE, DUAL OP AMP,
DUAL COMPARATOR WITH SHUTDOWN MODE
PRELIMINARY INFORMATION
ELECTRICAL CHARACTERISTICS: (Cont.)
T
A
= Over Operating Temperature Range, V
DD
= 5.0V
±
10%,
V
SS
= 0V, SHDN = V
DD
, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Comparators (Cont.)
T
DESEL
CMPTR1 Deselect time
(HI-Z from SHDN = V
IL
)
Differential Input Voltage Range
Input Common Mode Voltage Range
Input Offset Voltage
Input Bias Current
Output High Voltage
—
5
—
μ
sec
V
IN
V
IN(CM)
V
OS
I
B
V
OH
Both V
IN
s > = V
SS
Note 3, 5
V
CM
= (V
DD
– V
SS
)/2
IN
+
or IN
–
R
L
= 10k
to V
SS
,
1.8 < V
DD
< 5.5V
R
L
= 10k
to V
DD
1.8 < V
DD
< 5.5V
V
IN
(+) = V
DD
, V
IN
(–) = V
SS
V
DD
= 1.8V, Output
Shorted to V
SS
V
IN
(–) = V
DD
, V
IN
(+) = V
SS
V
DD
= 1.8V, Output
Shorted to V
DD
100mV Overdrive (Note 4)
10mV Overdrive (Note 4)
SHDN = V
SS
SHDN = V
SS
(Note 5)
—
V
SS
– 10
—
—
—
—
50
—
V
DD
V
DD
+10
—
—
V
V
mVDC
pA
V
V
DD
– 0.3
V
OL
Output Low Voltage
—
—
0.3
V
I
OH
Output Source Current
(Continuous)
1.3
3
8
mA
I
OL
Output Sink Current
(Continuous)
2.5
6
15
mA
t
PD1
t
PD2
R
OUT
(SD)
C
OUT
(SD)
Voltage Reference
V
REF
Response Time
Response Time
Output Resistance in Shutdown
Output Capacitance in Shutdown
—
—
20
—
15
60
—
3
—
—
—
5
μ
sec
μ
sec
M
pF
Reference Voltage
Load Regulation
No Load
0mA < I
SOURCE <
5mA
V
DD
= 5V, T
A
= 25
°
C
1.152
—
1.200
– 300
1.248
—
V
μ
V/mA
C
L(REF)
N
VREF
NOTES:
1. The reference and one comparator remain active in SHUTDOWN mode.
2. Op Amp configured as a voltage follower (inverting input connected to output; signal applied to non-inverting input).
3. Input common-mode voltage should not be allowed to go negative by more than 0.3V.
4. V
= 5.0V; C
= 100pF.
5. Guaranteed by Design
Load Capacitance
Voltage Noise
—
—
—
100
100
—
pF
100Hz to 100kHz
μ
V
RMS
DETAILED DESCRIPTION
The TC43 is the first of a series of very low power, Linear
Building Block products targeted at low voltage, single
supply applications. The TC43 minimum operating voltage
is 1.8V and maximum supply current is only 15
μ
A (fully
enabled). It combines two comparators, two op amps and a
voltage reference in a single package. A shutdown mode is
incorporated for easy adaptation to system power manage-
ment schemes. During shutdown, all but one comparator
and the voltage reference are disabled (i.e. powered down
and with their respective outputs at high impedance). The
“still awake” comparator and voltage reference can be used
as wake-up timer, power supply monitor, LDO controller or
other continuous duty circuit function.
Operational Amplifiers
Both op amps have rail-to-rail outputs, and an input
common range that includes ground. Input offset voltage is
1.0mV and input bias current is only 50pA. The outputs are
protected against short circuits. Both op amps are disabled
(powered down and outputs at high impedance) during
shutdown.
Comparators
Both comparators feature complimentary outputs with
current sinking capability of 2.5mA. Inputs and outputs are
rail-to-rail. Comparator CMPTR1 is disabled (powered down
and outputs at high impedance) during shutdown. CMPTR2
remains fully enabled during shutdown.
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