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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1040 Datasheet

Dual Low Power Comparator and Voltage Reference

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TC1040 pdf
TC1040
Linear Building Block – Dual Low Power Comparator and
Voltage Reference with Shutdown
Features
• Combines Two Comparators and a Voltage
Reference in a Single Package
• Optimized for Single Supply Operation
• Small Package: 8-Pin MSOP
• Ultra Low Input Bias Current: Less than 100pA
• Low Quiescent Current, Operating: 10µA (Typ.)
Shutdown Mode: 6µA (Typ.)
• Rail-to-Rail Inputs and Outputs
• Operates Down to VDD = 1.8V
• Reference and One Comparator Remain Active in
Shutdown to Provide Supervisory Functions
Applications
• Power Supply Circuits
• Battery Operated Equipment
• Consumer Products
• Replacements for Discrete Components
Device Selection Table
Part Number
TC1040CEUA
Package
8-Pin MSOP
Temperature
Range
-40°C to +85°C
Package Type
8-Pin MSOP
OUTA 1
VSS 2
INA+ 3
INB- 4
8 OUTB
7 VDD
TC1040CEUA
6 REF
5 SHDN
General Description
The TC1040 is a mixed-function device combining two
comparators and a voltage reference in a single 8-pin
package. The inverting input of Comparator A and the
non-inverting input of Comparator B are internally
connected to the reference.
This increased integration allows the user to replace
two packages, which saves space, lowers supply
current and increases system performance. The
TC1040 operates from two 1.5V alkaline cells down to
VDD = 1.8V. It requires only 10µA typical of supply
current, which significantly extends battery life. A low
power shutdown input (SHDN) disables one of the
comparators, placing its outputs in a high-impedance
state. This mode saves battery power and allows
comparator outputs to share common analog lines
(multiplexing). Shutdown current is 6µA (typical).
Rail-to-rail inputs and outputs allow operation from low
supply voltages with large input and output signal
swings.
Packaged in an 8-Pin MSOP, the TC1040 is ideal for
applications requiring low power level detection.
Functional Block Diagram
OUTA 1
TC1040
8 OUTB
VSS 2
INA+ 3
INB- 4
AB
––
Voltage
Reference
VSS
7 VDD
6
REF
5
SHDN
© 2002 Microchip Technology Inc.
DS21345B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1040 Datasheet

Dual Low Power Comparator and Voltage Reference

No Preview Available !

TC1040 pdf
TC1040
1.0 ELECTRICAL
CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ......................................................6.0V
Voltage on Any Pin .......... (VSS – 0.3V) to (VDD + 0.3V)
Junction Temperature....................................... +150°C
Operating Temperature Range............. -40°C to +85°C
Storage Temperature Range .............. -55°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC1040 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Typical values apply at 25°C and VDD = 3.0V. Minimum and maximum values apply for TA = -40° to
+85°C and VDD = 1.8V to 5.5V, unless otherwise specified.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VDD Supply Voltage
IQ Supply Current Operating
ISHDN
Supply Current, Shutdown
Shutdown Input
VIH Input High Threshold
VIL Input Low Threshold
ISI Shutdown Input Current
Comparators
ROUT(SD)
COUT(SD)
TSEL
Output Resistance in Shutdown
Output Capacitance in Shutdown
Select Time (For Valid Output)
1.8
80% VDD
20
10
0.05
20
TDESEL
Deselect Time
— 500
VIR
VOS
IB
VOH
VOL
PSRR
Input Voltage Range
Input Offset Voltage
Input Bias Current
Output High Voltage
Output Low Voltage
Power Supply Rejection Ratio
VSS – 0.2
-5
-5
VDD – 0.3
60
ISRC
Output Source Current
1—
ISINK
Output Sink Current
2—
tPD1 Response Time
tPD2 Response Time
Voltage Reference
VREF
Reference Voltage
IREF(SOURCE) Source Current
IREF(SINK)
Sink Current
CL(REF)
Load Capacitance
EVREF
Voltage Noise
eVREF
Noise Density
—4
—6
1.176
50
50
1.200
20
1.0
5.5 V
15 µA All outputs unloaded, SHDN = VDD
0.1 µA SHDN = VSS
20% VDD
±100
V
V
nA
5
VDD + 0.2
+5
+5
±100
0.3
M
pF
µsec
nsec
V
mV
pA
V
V
dB
mA
mA
µsec
µsec
SHDN = VSS, COMPB only
SHDN = VSS, COMPB only
(SHDN = VIH to VOUT)
RL =10kto VSS, COMPB only
(SHDN = VIL to VOUT)
RL =10kto VSS, COMPB only
VDD = 3V, TA = 25°C
TA = -40°C to 85°C
TA = 25°C, INA+, INB- = VDD to VSS
RL = 10kto VSS
RL = 10kto VDD
TA = 25°C
VDD = 1.8V to 5V
INA+ = VDD, INB- = VSS
Output Shorted to VSS
VDD = 1.8V
INA+ = VSS, INB- =VDD,
Output Shorted to VDD
VDD = 1.8V
100mV Overdrive, CL = 100pF
10mV Overdrive, CL = 100pF
1.224
100
V
µA
µA
pF
µVRMS 100Hz to 100kHz
µV/Hz 1kHz
DS21345B-page 2
© 2002 Microchip Technology Inc.


Part Number TC1040
Description Dual Low Power Comparator and Voltage Reference
Maker Microchip Technology
Total Page 14 Pages
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