Datasheet

ADCINA[7:0]
ADCINB[7:0]
ADCLO
ADCREFIN
ADCExternalCurrentBiasResistor ADCRESEXT
ADCREFP
V
DD1A18
V
DD2A18
V
SS1AGND
V
SS2AGND
V
DDAIO
V
SSAIO
V
DDA2
V
SSA2
ADCReferencePositiveOutput
ADCREFM
ADCReferenceMediumOutput
ReferenceI/OPower
Analoginput0−3VwithrespecttoADCLO
Connecttoanalogground
ADCAnalogPowerPin(1.9V/1.8V)
ADCAnalogPowerPin(1.9V/1.8V)
ADCAnalogPowerPin(3.3V)
ADCAnalogI/OGroundPin
ADCAnalogPowerPin(3.3V)
ADCREFPandADCREFMshouldnot
beloadedbyexternalcircuitry
ADCAnalogGroundPin
ADC16-ChannelAnalogInputs
Connecttoanaloggroundifinternalreferenceisused
ADCAnalogGroundPin
ADCAnalogGroundPin
22k
2.2 Fμ
(A)
2.2 Fμ
(A)
TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
www.ti.com SPRS439M –JUNE 2007–REVISED AUGUST 2012
Figure 4-9 shows the ADC pin-biasing for internal reference and Figure 4-10 shows the ADC pin-biasing
for external reference.
A. TAIYO YUDEN LMK212BJ225MG-T or equivalent
B. External decoupling capacitors are recommended on all power pins.
C. Analog inputs must be driven from an operational amplifier that does not degrade the ADC performance.
Figure 4-9. ADC Pin Connections With Internal Reference
Copyright © 2007–2012, Texas Instruments Incorporated Peripherals 79
Submit Documentation Feedback
Product Folder Link(s): TMS320F28335 TMS320F28334 TMS320F28332 TMS320F28235 TMS320F28234
TMS320F28232