ata6616 ATMEL Corporation, ata6616 Datasheet - Page 215

• Manufacturer Part Number: ata6616
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

4.18
4.18.1
4.18.2
9132A–AUTO–10/08
DRAFT
ADC – Analog to Digital Converter
Features
Overview
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The ATtiny167 features a 10-bit successive approximation ADC. The ADC is connected to a
11-channel Analog Multiplexer which allows 16 differential voltage input combinations and 11
single-ended voltage inputs constructed from the pins PA7..PA0 or PB7..PB4. The differential
input is equipped with a programmable gain stage, providing amplification steps of 8x or 20x on
the differential input voltage before the A/D conversion. The single-ended voltage inputs refer to
0V (AGND).
The ADC contains a Sample and Hold circuit which ensures that the input voltage to the ADC is
held at a constant level during conversion. A block diagram of the ADC is shown in
Internal reference voltages of nominally 1.1V or 2.56V are provided On-chip. Alternatively, AVcc
can be used as reference voltage for single ended channels. There are also options to output
the internal 1.1V or 2.56V reference voltages or to input an external voltage reference and
turn-off the internal voltage reference. These options are selected using the REFS[1:0] bits of
the ADMUX control register and using AREFEN and XREFEN bits of the AMISCR control
register.
10-bit Resolution
1.0 LSB Integral Non-linearity
± 2 LSB Absolute Accuracy
13 - 260 µs Conversion Time (Low - High Resolution)
Up to 15 kSPS at Maximum Resolution
11 Multiplexed Single Ended Input Channels
8 Differential input pairs with selectable gain
Temperature sensor input channel
Voltage from Internal Current Source Driving (ISRC)
Optional Left Adjustment for ADC Result Readout
0 - AVcc ADC Input Voltage Range
Selectable 1.1V / 2.56V ADC Voltage Reference
Free Running or Single Conversion Mode
ADC Start Conversion by Auto Triggering on Interrupt Sources
Interrupt on ADC Conversion Complete
Sleep Mode Noise Canceler
Unipolar / Bipolar Input Mode
Input Polarity Reversal Mode
ATA6616/ATA6617 [Preliminary]
Figure
4-82.
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