TMS320F2810PBKA datasheet(106/173 Pages) TI

106 / 173 page

ADCINA[7:0]

ADCINB[7:0]

ADCLO

ADCBGREFIN

ADC External Current Bias Resistor

ADCRESEXT

ADCREFP

DDA1

DDA2

SSA1

SSA2

AVDDREFBG

AVSSREFBG

DDAIO

SSAIO

DD1

SS1

Test Pin

ADC Reference Positive Input

ADCREFM

ADC Reference Medium Input

ADC Analog Power

ADC Reference Power

ADC Analog I/O Power

ADC Digital Power

Analog Input 0-3 V With Respect to ADCLO

Connect to Analog Ground

Analog 3.3 V

Analog Ground

1.8 V can use the same 1.8-V (or 1.9-V)

supply as the digital core but separate the

two with a ferrite bead or a filter

Digital Ground

ADC 16-Channel Analog Inputs

2 V

1 V

(D)

1 F -

10 F

1 F -

10 F

24.9 k

/20 k

(C)

106

TMS320F2810, TMS320F2811, TMS320F2812

SPRS174U – APRIL 2001 – REVISED JULY 2019

www.ti.com

Submit Documentation Feedback

Product Folder Links: TMS320F2810 TMS320F2811 TMS320F2812

Detailed Description

External decoupling capacitors are recommended on all power pins.

Analog inputs must be driven from an operational amplifier that does not degrade the ADC performance.

Use 24.9 kΩ for ADC clock range 1–18.75 MHz; use 20 kΩ for ADC clock range 18.75–25 MHz.

It is recommended that buffered external references be provided with a voltage difference of (ADCREFP –

ADCREFM) = 1 V ± 0.1% or better.

External reference is enabled using bit 8 in the ADCTRL3 Register at ADC power up. In this mode, the accuracy of

external reference is critical for overall gain. The voltage ADCREFP – ADCREFM will determine the overall accuracy.

Do not enable internal references when external references are connected to ADCREFP and ADCREFM. See the

TMS320x281x DSP Analog-to-Digital Converter (ADC) Reference Guide for more information.

Figure 6-6. ADC Pin Connections With External Reference

TMS320F2810PBKA Datasheet(PDF) 106 Page - Texas Instruments

TMS320F2810PBKA Datasheet(HTML) 106 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL