PGA411-Q1: Excitation signal setting method

Taemin Ahn

Part Number: PGA411-Q1

Hi team

Excitation signal setting
: 10KHz, 5Vrms (Vp-p 14.04V) Please tell me how to set

1) Since the excitation is directly amplified by PGA411, many settings are required. Please tell me about the register setting

2) Input voltage check: adjust the excitation signal voltage level to the voltage of Vext (PIN 24). Please tell me the input voltage that will output 5Vrms

Thanks,

over 7 years ago

0 Clancy Soehren over 7 years ago

TI__Mastermind 23810 points

Taemin,

For 5VRMS, you will choose one of these two options (just below and just above 5VRMS):
EXTOUT = 1
EXTOUT_GL = F

EXTOUT = 2
EXTOUT_GL = 0

For VEXT, you can choose 13V or 14V.

0 Taemin Ahn over 7 years ago in reply to Clancy Soehren

Intellectual 795 points

Hi Clancy

Thank you for your help.
I have additional questions.

EXTOUT = 1 & EXTOUT_GL = F & Supply voltage Vext = 13V
EXTOUT = 2 & EXTOUT_GL = 0 & Supply voltage Vext = 14V
EXTOUT = 1 & EXTOUT_GL = F & Supply voltage Vext = 14V
EXTOUT = 2 & EXTOUT_GL = 0 & Supply voltage Vext = 13V

Is all of the above correct?

Thnks,
Taemin

0 Clancy Soehren over 7 years ago in reply to Taemin Ahn

TI__Mastermind 23810 points

Yes, that looks correct.

MODEVEXT = 3 for VEXT = 13V
MODEVEXT = 4 for VEXT = 14V

Data converters

Data converters forum

PGA411-Q1: Excitation signal setting method