TSM1285 Demo Board
TSM1285-EVB Rev. 1.0
Page 5
Evaluation with TSM1285
Demo Board Only
Required Equipment
TSM1285
Demo
Board
DC Power Supply
Low-noise Signal Generator Stanford Research
Systems Model DS360 or better w/ BNC cable
Ammeter
In order to evaluate the TSM1285 using the TSM1285
demo board only, additional input signals for the CS
SCLK and SHDN pins will be necessary along with an
oscilloscope to monitor the inputs and output. The
following steps are to be performed:
1) Set the voltage of the power supply between
+2.7V and +3.6V and turn it off. Connect the
positive terminal of the DC power supply to pin 12
labeled as “3.3V” on X1, and the ground terminal
to pin 2 labeled as “GND”. Refer to Figure 6.
2) Timing signals for the TSM1285 input signals
AIN, CS, SHDN, and SCLK should be set
according to the desired measurement based
while following the product datasheet
specifications. Refer to the TSM1285 product
data sheet “Description of Operation” for details.
Access to these pins is available through the 34-
pin socket, X1, labeled as “SCLK”, “CS
"
,
"
SHDN
"
, and “DOUT”. The corresponding pins on
X1 are 10, 8, 4, and 6, respectively.
3) To measure the supply current of the TSM1285,
place jumper J2 to position 2-3. Then, apply an
external power supply to J1. An ammeter can
now be connected in series with the power supply
for a supply current measurement of the
TSM1285. The supply current should be less
than 650µA. Please refer to Figure 6 and table 1.
Figure 6. TSM1285 Evaluation Board Circuit
