TS3006DB TOUCHSTONE | Alldatasheet
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Technical content
© 2013 Touchstone Semiconductor, Inc. All rights reserved.
FEATURES
5V Supply Voltage FOUT Output Period: 40µs(25kHz) o RSET = 4.32MΩ Fully Assembled and Tested 2in x 2in 2-layer circuit board COMPONENT LIST DESIGNATION QTY DESCRIPTION C2 1 4.7µF ±10% capacitor (0805) R1 1 4.32MΩ ± 1% (0805) U1 1 TS3006 VDD,F_OUT 2 Test points
DESCRIPTION
The TS3006 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 2.4 μA(max) supply current. Requiring only a resistor to set the base output fr equency (or output period) at 25k Hz (or 40µs) w ith a 50% duty cycle, the TS3006 timer/oscillator is compact, easy-to-use, and versatile. Optimized for ultra -long life, low frequency, battery-powered/portable applications, TS3006 joins the TS 3001, TS3002, TS3004, and TS3005 in Touchstone’s CMOS timer family in its “NanoWatt Analog™” series of high -performance analog integrated circuits. The TS3006 requires only a n RSET = 4.32MΩ resistor to set the FOUT output period to 40µs(25kHz). The complete circuit is designed at a supply voltage of 5V. The TS3006 is fully specified over the -40°C to +85°C temperature range and is available in a low -profile, 8-pin 3x3 mm TDFN package with an exposed back-side paddle. Product datasheet and additional documentation can be found on the factory web site at www.touchstonesemi.com.
ORDERING INFORMATION
A 1.55V to 5.25V, 1.9µA, 9kHz to 300kHz Silicon Timer Figure 1. TS3006 Demo Board Circuit
The TS3006 requires only an RSET = 4.32MΩ resistor to set the FOUT/PW MOUT output period to 40µs(25kHz). The complete circuit is designed at a supply voltage of 5V and it is shown in Figure 1. The TS3006 is a user-programmable oscillator where the period of the square wave at its FOUT terminal is generated by an external resistor connected to the RSET pin. The output period is given by: O T ( ) 1 08 11 S T Equation 1. FOUT Frequency Calculation With RSET = 4.32MΩ, the FOUT period is approximately 40µs (25kHz) with a 50% duty cycle. As design aids, Tables 1 lists TS3006’s typical O T frequency for various standard values for RSET. QUICK START PROCEDURE Required Equipment TS3006 Demo Board DC Power Supply Oscilloscope Model Agilent DSO1014A or equivalent One 10X, 15p //10MΩ oscilloscope probe To evaluate the TS3006 silicon timer, the following steps are to be performed: 1) Before connecting the DC power supply to the demo board, turn on the power supply, set the DC voltage to 5V, and then turn it off. 2) Connect the DC power supply positive terminal to the test point labeled VDD. Connect the negative terminal of the DC power supply to the test point labeled GND. 3) To monitor the FOUT output signal, connect the signal terminal of an oscilloscope probe to th e test point labeled F OUT and the ground terminal to the test point labeled GND. 4) Select a channel on the oscilloscope and set the vertical voltage sca le and the vertical position to 2V/DIV and 0V, respectively. Set the horizontal time scale to 5µs/DIV. The coupling should be DC coupling. Turn on the power supply. The supply current will vary depending on the load on the output . Given the default set -up on the board, the FOUT output period is approximately 40µs. With an output load of 15pF on FOUT due to the oscilloscope probe , the supply current should be less than 4µA. RSET (MΩ) FOUT (kHz) 0.360 300 1 108 2.49 43.37 4.32 25 6.81 15.86 9.76 11.07 12 9 Table 1: FOUT vs RSET
630 Alder Drive, Milpitas, CA 95035 TS3006DB r1p0
Figure 3. Top Layer View #1 Figure 4. Top Layer View #2 Figure 5. Bottom Layer (GND) #2 Figure 2. FOUT Period vs RSET Figure 6. Bottom Layer (GND) #2