TS3005 Demo Board
A 1.55V to 5.25V, 1.35µA, 1.7ms to 33hrs Silicon Timer
FEATURES
5V Supply Voltage
FOUT/PWMOUT Output Period Range:
o
47.4ms ≤ t
FOUT
≤ 27.6hrs
o
RSET = 10MΩ
PWMOUT Output Duty Cycle:
o
63% for FDIV2:0 = 000
o
CPWM = 0.1µF
PWMOUT Duty Cycle Reduction
o
1MΩ Potentiometer
Fully Assembled and Tested
2in x 2in 2-layer circuit board
DESCRIPTION
The demo board for the TS3005 is a completely
assembled and tested circuit board that can be used
for evaluating the TS3005. The TS3005 is a single-
supply,
second-generation
Touchstone
Semi
oscillator/timer fully specified to operate at a supply
voltage range of 1.55V to 5.25V while consuming less
than 1.5μA(max) supply current. Requiring only a
resistor to set the base output frequency (or output
period) at 49Hz (or 20.5ms) with a 50% duty cycle,
the TS3005 timer/oscillator is compact, easy-to-use,
and versatile. Optimized for ultra-long life, low
frequency, battery-powered/portable applications, the
TS3005 joins the TS3001, TS3002, TS3003, TS3004,
and TS3006 in Touchstone’s CMOS timer family in its
“NanoWatt Analog™” series of high-performance
analog integrated circuits.
The TS3005 requires only an RSET = 10MΩ resistor
to set the FOUT/PWMOUT output period range to
between 47.4ms and 27.6 hours. To change the
output period, an FDIV2:0 combination can be
selected. With an on-board 0.1µF CPWM capacitor,
the duty cycle of PWMOUT is set at approximately
63%. Further reduction of the duty cycle is available
with an on-board 1MΩ potentiometer. The complete
circuit is designed at a supply voltage of 5V. The
TS3005 is fully specified over the -40°C to +85°C
temperature range and is available in a low-profile,
10-pin 3x3mm TDFN package with an exposed back-
side paddle.
Product datasheet and additional documentation can
be
found
on
the
factory web
site
at
COMPONENT LIST
DESIGNATION
C1
C2
R1, R2
PWM_ADJ
U1
VDD,F_OUT,
PWM_OUT
J1, FDIV0, FDIV1,
FDIV2
QTY
1
1
2
1
1
3
3
DESCRIPTION
0.1µF ±10%
capacitor (0805)
4.7µF ±10%
capacitor (0805)
10MΩ ± 1% (0805)
1MΩ Potentiometer
TS3005
Test points
Jumper
ORDERING INFORMATION
Order Number
TS3005DB
Description
TS3005
Demo Board
Figure 1. TS3005 Demo Board Circuit
Page 1
© 2013 Touchstone Semiconductor, Inc. All rights reserved.
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
