Texas Instruments THS5671A Evaluation Module THS5671EVM THS5671EVM 데이터 시트
제품 코드
THS5671EVM
W3
3
2
1
THS56x1A
EXTLO
5 VA
EXTIO
BIAS
R14
Generating a Voltage Reference
Figure 3-4. Jumper Configuration for Internal Reference Voltage
3.5.2 Onboard External Reference
To select the onboard external reference voltage, the user should follow the jumper configuration shown in
Table 3-6. Jumper Configuration for External VREF
Jumper
Pins 1 and 2
Pins 2 and 3
VREF setting
W3
Jumper not installed
N/A
W4
Jumper installed
Jumper not installed
It is important to understand that the reference voltage plays a fundamental part in the conversion
process. Changes in the value of the reference voltage are reflected in the full-scale range of the device.
The variation in voltage for the reference should, ideally, contribute less than 1/2 an LSB of error to the
total conversion process.
process. Changes in the value of the reference voltage are reflected in the full-scale range of the device.
The variation in voltage for the reference should, ideally, contribute less than 1/2 an LSB of error to the
total conversion process.
External reference voltages can be supplied via W4; see
for details.
29
SLAU032C
–
February 2001
–
Revised April 2011
User Configurations
Copyright
©
2001
–
2011, Texas Instruments Incorporated