Linear 600 Quick Start Manual

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 600
DESCRIPTION
Demonstration circuit 600 simplifies the evaluation of
the LTC1540CDD comparator in the tiny, 3mm × 3mm,
DFN (Dual in-line, Flat, No-leads) chip-scale package.
Electrical performance of this LTC1540 is the same as
previous versions. This version is only a packaging en-
hancement.
An evaluation circuit can easily be built on this board
without handling the tiny DFN device. Pads are provided
for adding external components and holes are available
for jumpers, signal I/O and supply wires. Supply bypass
capacitors are already on the board. Alternatively adding
two 4-pin headers (0.1" spacing) converts the board to a
standard 8-pin DIP format for use with a socket on a
second circuit board.
The backside of this evaluation board is void of metal to
allow wiring into an existing system with the board rest-
ing on top of other components.
Table 1. Typical Performance Summary (Single 3V Supply, T
PARAMETER
Supply Current
Offset Voltage
Input Bias Current
Propagation Delay
Output Swing
Reference Voltage
Device Top Mark Identifier: LAAS
EVALUATION CARD FOR THE LTC1540 IN THE DFN PACKAGE
=25°C) Visit www.linear.com for complete data sheet.
A
CONDITION
10mV Overdrive
100mV overdrive
Voltage from Either Supply Rail
About the LTC1540CDD
The LTC1540 is a Nano-power Voltage Comparator with
a Built In Voltage Reference
Ultra-low Quiescent Current of only 300nA
1.2V, 2% Tolerance Voltage Reference
Adjustable Hysteresis
50µsec Propagation Delay
Input Voltage Range From V
Output Sources 40mA
Total Supply Voltage Range: 2V to 11V
LTC1540CDD
- +
to V -1.3V
VALUE
280nA
12mV
±10pA
70µsec
60µsec
400mV
1.182V
1