TS1005 Op Amp Demo Board FEATURES DESCRIPTION The demo board for the TS1005 is a completely assembled and tested circuit board that can be used for evaluating the TS1005. The TS1005 is a precision CMOS operational amplifier fully specified to operate over a supply voltage range from 0.8V to 5.5V with a GBWP of 20kHz. Fully specified at 1.8V, the TS1005 is optimized for ultra-long-life battery powered applications. The TS1005 exhibits a typical input bias current of 2pA, and rail-to-rail input and output stages. 0.8V to 5.5V Single-supply operation AC-coupled Inverting configuration supplied Fully Assembled and Tested 2mm x 2mm 2-layer demo board COMPONENT LIST DESIGNATION QTY DESCRIPTION C1, C2, C3, C5 4 C4, C6 2 R2 1 R7 1 R5, R6, R10 3 R8, R9 2 R1, R3, R4 3 U1, U2 2 VDD ,Vin ,Vout ,GND 11 0.1µF ± 10% capacitors (0805) 1µF ±10% capacitors (0805) 665kΩ ± 1% resistor (0805) 500kΩ ± 1% resistor (0805) 1MΩ ± 1% resistors (0805) 1.25MΩ ± 1% resistors (0805) 2MΩ ± 1% resistors (0805) TS1005 operational amplifiers Test points The TS1005 is fully specified over the industrial temperature range (-40°C to +85°C). The TS1005 evaluation board is offered with either a PCB-space saving 5-lead SC70 or 5-lead SOT23 packaging. Product data sheets and additional documentation can be found on factory web site at www.touchstonesemi.com. Ordering Information Order Number TS1005DB TS1005DB-SOT Figure 1. Inverting Configuration Description SC70 Packaging Demo Board SOT23 Packaging Demo Board Figure 2. TS1005-SOT Evaluation Board Page 1 © 2013 Touchstone Semiconductor, Inc. All rights reserved. TS1005 Op Amp Demo Board Inverting configuration Description The TS1005DB evaluation board with SC70 packaging provides one configuration, namely an inverting configuration. The TS1005DB-SOT evaluation board with SOT23 packaging provides two configurations for evaluating the TS1005 operational amplifier in one single PCB board, namely a noninverting configuration located on the left-hand side of the board and an inverting configuration located on the right-hand side of the board. In both cases, the input to each circuit is AC-coupled. The demo board provides a re-biasing scheme at one-half the power supply or VDD/2 for the inverting configuration and at VDD/4 for the non-inverting configuration. The TS1005 demo board provides a dedicated power supply for the non-inverting circuit and a dedicated power supply for the inverting circuit. This provides the user the flexibility of evaluating one circuit at a time or both at the same time. In both the non-inverting and the inverting configuration, the AC-coupling capacitor creates a high pass filter. The resulting cut-off frequency, fC, is given as: f C= I =- 6 10 In this case, 6=1MΩ and 10=1MΩ. his results in a signal gain of -1 with a circuit bandwidth of 10kHz and an overall circuit bandwidth range of 1.6Hz to 10kHz. Quick Start Procedures Required Equipment TS1005 demo board DC Power Supply, Single or Dual Output Function Generator 4-channel Oscilloscope wo 1MΩ oscilloscope probes 1 2 In the non-inverting circuit, = 5=1MΩ and = 5=0.1µF. In the inverting case, = 10=1MΩ and C=C1=0.1µF. In both cases, these component values generate a high-pass cut-off frequency of 1.6Hz. Default Configurations Non-Inverting configuration In the non-inverting configuration, the circuit’s transfer function is given by the following equation: I In an inverting configuration, the circuit’s transfer function is given by the following equation: =1 With =2MΩ and =2MΩ the circuit signal gain is 2 with a circuit bandwidth of 10kHz. This results in an overall circuit bandwidth range of 1.6Hz to 10kHz. Non-Inverting Configuration In order to evaluate the TS1005 operational amplifier in the non-inverting configuration, the following steps are to be performed: 1) Before connecting the DC power supply to the demo board power test points, turn on the power supply and set the DC voltage to 5.5V and then turn it off. 2) Set the function generator frequency to 500Hz and output level with a VOH = 2.35V and a VOL = 2.15V. This sets the input signal swing to 200mVPP, centered at 2.25V. 3) In order to monitor the input and output signal, select two channels on the oscilloscope and set the vertical voltage scale and the vertical position on each channel to 100mV/DIV and -2.25V, respectively. Set the horizontal time scale to 500µs/DIV. 4) Connect the positive terminal of the DC power supply to VDD and the ground terminal to GND. Page 2 TS1005DB r1p1 RTFDS TS1005 Op Amp Demo Board 5) Connect the signal output of the function generator to Vin and the ground terminal to GND. 6) To monitor the input, connect the signal terminal of one of the oscilloscope probes to Vin and the ground terminal to GND. To monitor the output, use the second probe to connect the signal terminal to VOUT and the ground terminal to GND. 7) Turn on the power supply and check that the power supply current is approximately 4.3µA. 8) Turn on the function generator. 3) In order to monitor the input and output signal, select two channels on the oscilloscope and set the vertical voltage scale and the vertical position on each channel to 100mV/DIV and -2.25V, respectively. Set the horizontal time scale to 500µs/DIV. 4) Connect the positive terminal of the DC power supply to VDD and the ground terminal to GND. 5) Connect the signal output of the function generator to Vin and the ground terminal to GND. 9) Observe the input and output signal. The output signal is an amplified version of the input signal with an output swing of approximately 400mVPP , corresponding to a signal gain of two. 6) To monitor the input, connect the signal terminal of one of the oscilloscope probes to Vin and the ground terminal to GND. To monitor the output, use the second probe to connect the signal terminal to VOUT and the ground terminal to GND. Inverting Configuration 7) Turn on the power supply and check that the power supply current is approximately 3.8µA. In order to evaluate the TS1005 operational amplifier in the inverting configuration, the following steps are to be performed: 1) Before connecting the DC power supply to the demo board, turn on the power supply and set the DC voltage to 5.5V and then turn it off. 8) Turn on the function generator. 9) Observe the input and output signal. The output signal is an inverted version of the input signal and the swing should be 200mVPP. 2) Set the function generator output frequency to 500Hz and output level with a VOH = 2.35V and a VOL = 2.15V. This sets the input swing to 200mVPP, centered at 2.25V. Figure 3. Non-Inverting Configuration TS1005DB r1p1 RTFDS Figure 4. TS1005DB Evaluation Board Page 3 TS1005 Op Amp Demo Board Figure 5. TS1005DB-SOT Top Layer #1 Figure 7. TS1005DB-SOT Bottom Layer (GND) #1 Page 4 Figure 6. TS1005DB-SOT Top Layer #2 Figure 8. TS1005DB-SOT Bottom Layer (GND) #2 TS1005DB r1p1 RTFDS TS1005 Op Amp Demo Board Figure 9. TS1005DB Top Layer #1 Figure 11. TS1005DB Bottom Layer (GND) #1 Touchstone Semiconductor, Inc. 630 Alder Drive, Milpitas, CA 95035 +1 (408) 215 - 1220 ▪ www.touchstonesemi.com Figure 10. TS1005DB Top Layer #1 Figure 12. TS1005DB Bottom Layer (GND) #2 Page 5 TS1005DB r1p1 RTFDS