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ATtiny261A Datasheet(PDF) 188 Page - ATMEL Corporation

Part # ATtiny261A
Description  8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
PDF  292 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATtiny261A Datasheet(HTML) 188 Page - ATMEL Corporation

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188
8197A–AVR–10/09
ATtiny261A/461A/861A
19.6 ADC Characteristics
Note:
1. VDIFF must be below VREF.
2. Not tested in production.
Table 19-7.
ADC Characteristics, Single Ended Channels. T = -40
°C - 85°C
Symbol
Parameter
Condition
Min
Typ
Max
Units
Resolution
10
Bits
Absolute accuracy
(Including INL, DNL, and
Quantization, Gain and Offset
Errors)
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
2LSB
VREF = 4V, VCC = 4V,
ADC clock = 1 MHz
3LSB
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
Noise Reduction Mode
1.5
LSB
VREF = 4V, VCC = 4V,
ADC clock = 1 MHz
Noise Reduction Mode
2.5
LSB
Integral Non-Linearity (INL)
(Accuracy after Offset and
Gain Calibration)
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
1LSB
Differential Non-linearity (DNL)
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
0.5
LSB
Gain Error
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
2.5
LSB
Offset Error
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
1.5
LSB
Conversion Time
Free Running Conversion
13
260
µs
Clock Frequency
50
1000
kHz
AVCC
Analog Supply Voltage
VCC - 0.3
VCC + 0.3
V
AREF
External Voltage Reference
Single Ended Conversions
2.0
AVCC
V
Differential Conversions
2.0
AVCC - 1.0
V
VIN
Input Voltage
Single Ended Conversions
GND
VREF
Differential Conversions
0
AVCC
(1)
V
Input Bandwidth
Single Ended Conversions
38.5
kHz
Differential Conversions
4
VINT
Internal 1.1V Reference
1.0
1.1
1.2
V
Internal 2.56V Reference (1)
VCC > 3.0V
2.3
2.56
2.8
V
RREF
Reference Input Resistance
35
k
Ω
RAIN
Analog Input Resistance
100
M
Ω
ADC Conversion Output
0
1023
LSB



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