TC1040 Datasheet, PDF (1/14 Pages) Microchip Technology – Linear Building Block . Dual Low Power Comparator and Voltage Reference with Shutdown

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 V_DD = 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
V_{SS 2}
INA+ 3
INB- 4
8 OUTB
7 V_DD
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
V_DD = 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
V_SS ²
INA+ ³
INB- ⁴
A
B
–
–
Voltage
Reference
V_SS
7 _VDD
6
REF
5
SHDN
© 2002 Microchip Technology Inc.
DS21345B-page 1