AT43USB355_06 datasheet(59/115 Pages) ATMEL

59 / 115 page

AT43USB355

2603G–USB–04/06

Analog-to-digital

Converter

Feature list:

•

10-bit Resolution

•

4 LSB Integral Non-linearity

•

±2 LSB Absolute Accuracy

•

12 – 768 µs Conversion Time

•

Up to 83 kSPS at Maximum Resolution

•

12 Multiplexed Input Channels

•

Rail-to-rail Input Range

•

Free Running or Single Conversion Mode

•

Interrupt on ADC Conversion Complete

The AT43USB355 features a 10-bit successive approximation ADC. The ADC is connected to

a 12-channel Analog Multiplexer to pins AD0 – AD11. The ADC contains a Sample and Hold

Amplifier that ensures that the input voltage to the ADC is held at a constant level during con-

version. A block diagram of the ADC is shown in Figure 22.

An external reference voltage must be applied to the V

REF pin. This voltage must be in the

range between 2.4V and the VCEXTA voltage.

Figure 22. Analog-to-digital Converter Block Schematic

ADC Conversion

Complete IRQ

8-bit Data Bus

ADC Multiplexer

Select (ADMUX)

Prescaler

ADC Ctrl and Staus

ADC Data Register

(ADCH/ADCL)

Conversion Logic

10-bit DAC

Sample and Hold

Comparator

Analog

Inputs

VREF

AT43USB355 데이터시트(PDF) 59 Page - ATMEL Corporation

AT43USB355 데이터시트(HTML) 59 Page - ATMEL Corporation

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

데이터시트 다운로드

링크 URL