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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1031 Datasheet

Low Power Voltage Reference

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TC1031 pdf
TC1031
Linear Building Block – Low Power Voltage Reference with
Programmable Hysteresis Comparator and Shutdown
Features
• Combines Comparator and 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, Active: 6µA (Typ.),
Shutdown Mode: 0.1µA (Typ.)
• Rail-to-Rail Inputs and Outputs
• Operates Down to VDD = 1.8V
• Programmable Hysteresis
Applications
• Power Management Circuits
• Battery Operated Equipment
• Consumer Products
Device Selection Table
Part Number
TC1031CEUA
Package
8-Pin MSOP
Temperature
Range
-40°C to +85°C
Package Type
8-Pin MSOP
VSS 1
SHDN 2
INA+ 3
INA- 4
8 OUT
7 VDD
TC1031CEUA 6 VREF
5 HYST
General Description
The TC1031 is a low-power comparator and voltage
reference designed specifically for low-power applica-
tions. The TC1031 is designed for operation from a
single supply, however operation from dual supplies is
also possible. The power supply current drain is
independent of the magnitude of the power supply
voltage. The TC1031 can operate from two 1.5V
alkaline cells, and operation is ensured to VDD = 1.8V.
Typical active supply current is 6µA. Rail-to-rail inputs
and outputs allow operation from low supply voltages
with large input and output signal swings.
The TC1031 provides a simple method for adding user-
adjustable hysteresis without feedback or complex
external circuitry. Hysteresis is adjusted with a simple
resistor divider on the HYST input. A shutdown input,
SHDN, disables the comparator and voltage reference
and reduces supply current to less than 0.1µA
(maximum) when taken low.
The TC1031 is packaged in a space-saving 8-Pin
MSOP, making it ideal for applications requiring high
integration, small size and low power.
Functional Block Diagram
1
VSS
TC1031
8 OUT
SHDN 2
IN+ 3
IN- 4
Voltage
Reference
7 VDD
6
VREF
5
HYST
© 2002 Microchip Technology Inc.
DS21342B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1031 Datasheet

Low Power Voltage Reference

No Preview Available !

TC1031 pdf
TC1031
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.
TC1031 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Typical values apply at 25°C and VDD = 3.0V; TA = -40° to +85°C, and VDD = 1.8V to 5.5V, unless
otherwise specified.
Symbol
Parameter
Min Typ Max Units
Test Conditions
VDD
IQ
ISHDN
Supply Voltage
Supply Current, Operating
Supply Current, Shutdown
1.8 — 5.5 V
— 6 10 µA All Outputs Open, SHDN = VDD
— — 0.1 µA SHDN = VSS
Shutdown Input
VIH
VIL
ISI
Comparator
Input High Threshold
Input Low Threshold
Shutdown Input Current
80% VDD
——
V
— 20% VDD
V
— ±100 nA
ROUT (SD) Output Resistance in Shutdown
20 — — MSHDN = VSS
COUT (SD) Output Capacitance in Shutdown
— — 5 pF SHDN = VSS
TSEL
Select Time
— 20 — µsec VOUT Valid from SHDN = VIH
RL=10kto VSS
TDESEL
Deselect Time
— 500 — nsec VOUT Invalid from SHDN = VIL
RL=10kto VSS
VICMR
Common-Mode Input Voltage Range VSS – 0.2
— VDD + 0.2 V
VOS Input Offset Voltage (Note 1)
–5 — +5 mV VDD = 3V, VCM = 1.5V
IB Input Bias Current
— — ±100 pA TA = 25°C
IN+, IN- = VDD to VSS
VOH Output High Voltage
VDD – 0.3
V RL = 10kto VSS
VOL Output Low Voltage
— 0.3
V RL = 10kto VDD
CMRR
Common Mode Rejection Ratio
66 — — dB TA = 25°C, VDD = 5V
VCM = VDD to VSS
PSRR
Power Supply Rejection Ratio
60 — — dB TA = 25°C, VDD = 1.8V to 5V
VCM = 1.2V
ISRC
Output Source Current
1 — — mA IN+ = VDD, IN- = VSS
VDD = 1.8V,
Output Shorted to VSS
ISINK
Output Sink Current
2 — — mA IN+ = VSS, IN- = VDD,
VDD = 1.8V,
Output Shorted to VDD
VHYST
Voltage Range at HYST Pin
VREF – 0.08 —
VREF
V
IHYST
Hysteresis Input Current
— — ±100 nA
tPD1 Response Time
— 4 — µsec 100mV Overdrive; CL = 100pF
tPD2 Response Time
— 6 — µsec 100mV Overdrive; CL = 100pF
Note 1: VOS is measured as (VUT + VLT – 2VREF)/2 where VUT is the upper hysteresis threshold and VLT is the lower hysteresis threshold with
VREF – VHYST set to 10mV. This represents the asymmetry of the hysteresis thresholds around VREF
DS21342B-page 2
© 2002 Microchip Technology Inc.


Part Number TC1031
Description Low Power Voltage Reference
Maker Microchip Technology
Total Page 12 Pages
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