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TC43 Datasheet(PDF) 3 Page - TelCom Semiconductor, Inc

Part No. TC43
Description  LINEAR BUILDING BLOCK - VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE
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Maker  TELCOM [TelCom Semiconductor, Inc]
Homepage  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC43 Datasheet(HTML) 3 Page - TelCom Semiconductor, Inc

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TC43
LINEAR BUILDING BLOCK –
VOLTAGE REFERENCE, DUAL OP AMP,
DUAL COMPARATOR WITH SHUTDOWN MODE
PRELIMINARY INFORMATION
ELECTRICAL CHARACTERISTICS: (Cont.) TA = Over Operating Temperature Range, VDD = 5.0V ±10%,
VSS = 0V, SHDN = VDD, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Comparators (Cont.)
TDESEL
CMPTR1 Deselect time
5
µsec
(HI-Z from SHDN = VIL)
VIN
Differential Input Voltage Range
Both VINs > = VSS
——
VDD
V
VIN(CM)
Input Common Mode Voltage Range
Note 3, 5
VSS
—VDD
V
VOS
Input Offset Voltage
VCM = (VDD – VSS)/2
– 10
+10
mVDC
IB
Input Bias Current
IN+ or IN
—50
pA
VOH
Output High Voltage
RL = 10kΩ to VSS,VDD – 0.3
V
1.8 < VDD < 5.5V
VOL
Output Low Voltage
RL = 10kΩ to VDD
0.3
V
1.8 < VDD < 5.5V
IOH
Output Source Current
VIN (+) = VDD, VIN (–) = VSS
1.3
3
8
mA
(Continuous)
VDD = 1.8V, Output
Shorted to VSS
IOL
Output Sink Current
VIN (–) = VDD, VIN (+) = VSS
2.5
6
15
mA
(Continuous)
VDD = 1.8V, Output
Shorted to VDD
tPD1
Response Time
100mV Overdrive (Note 4)
—15
µsec
tPD2
Response Time
10mV Overdrive (Note 4)
60
µsec
ROUT(SD)
Output Resistance in Shutdown
SHDN = VSS
20
M
COUT(SD)
Output Capacitance in Shutdown
SHDN = VSS (Note 5)
3
5
pF
Voltage Reference
VREF
Reference Voltage
No Load
1.152
1.200
1.248
V
Load Regulation
0mA < ISOURCE < 5mA
– 300
µV/mA
VDD = 5V, TA = 25°C
CL(REF)
Load Capacitance
100
pF
NVREF
Voltage Noise
100Hz to 100kHz
100
µVRMS
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
µA (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.
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
DD = 5.0V; CL = 100pF.
5. Guaranteed by Design


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