TC1043CEQRTR Microchip Technology, TC1043CEQRTR Datasheet - Page 5

• Manufacturer Part Number: TC1043CEQRTR
• Description: IC DUAL OPAMP/COMP W/VREF 16QSOP
• Manufacturer: Microchip Technology
• Type: Amplifier, Comparator, Referencer

Specifications of TC1043CEQRTR

• Package / Case: 16-QSOP
• Applications: General Purpose
• Mounting Type: Surface Mount
• Number Of Channels: 2 Channels
• Output Type: Push-Pull
• Response Time: 4 us
• Offset Voltage (max): 1.5 mV
• Input Bias Current (max): 100 pA
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Supply Current (max): 30 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.0
The TC1043 is one of a series of very low power, linear
building block products targeted at low voltage, single
supply applications. The TC1043 minimum operating
voltage is 1.8V and typical supply current is only 20µA
(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 management schemes. During shut-
down, all but one comparator and the voltage reference
are disabled (i.e. powered down with their respective
outputs at high impedance). The “still awake” compar-
ator and voltage reference can be used as a wake-up
timer, power supply monitor, LDO controller or other
continuous duty circuit function.
3.1
The TC1043 contains two comparators. The compara-
tors input range extends beyond both supply voltages
by 200mV and the outputs will swing to within several
millivolts of the supplies, depending on the load current
being driven.
The comparators exhibit a propagation delay and sup-
ply current which are largely independent of supply
voltage. The low input bias current and offset voltage
make them suitable for high impedance precision appli-
cations.
Comparator CMPTR1 is disabled during shutdown and
has a high impedance output. Comparator CMPTR2
remains active.
3.2
The TC1043 contains two rail-to-rail op amps. The
amplifiers’ input range extends beyond both supplies
by 200mV and the outputs will swing to within several
millivolts of the supplies depending on the load current
being driven.
The amplifier design is such that large signal gain, slew
rate and bandwidth are largely independent of supply
voltage. The low input bias current and offset voltage of
the TC1043 make it suitable for precision applications.
Both op amps are disabled during shutdown and have
high output impedance.
3.3
A 2.0% tolerance, internally biased, 1.20V bandgap
voltage reference is included in the TC1043. It has a
push-pull output capable of sourcing and sinking at
least 50µA. The voltage reference remains fully
enabled during shutdown.
©
2002 Microchip Technology Inc.
DETAILED DESCRIPTION
Comparators
Operational Amplifiers
Voltage Reference
3.4
SHDN at V
tor. The SHDN input cannot be allowed to float. When
not used, connect it to V
output and the two disabled op amp outputs are in a
high impedance state when shutdown is active. The
disabled comparator’s inputs and the two disabled op
amp inputs can be driven from rail-to-rail by an external
voltage when the TC1043 is in shutdown. No latch-up
will occur when the device is driven to its enabled state
when SHDN is set to V
Shutdown Input
IL
disables both op amps and one compara-
IH
DD
.
. The disabled comparator’s
TC1043
DS21347B-page 5