Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Fiche technique télécharger pdf (Page 78)

XMEGA B1 [DATASHEET]

Atmel-8330H-AVR-ATxmega64B1-128B1_datasheet–AVR–12/2014

Notes: 1. Maximum numbers are based on characterisation and not tested in production, and valid for 10% to 90% input voltage range.

2. Unless otherwise noted all linearity, offset and gain error numbers are valid under the condition that external V

REF

is used.

Table 36-12. Gain Stage Characteristics

Gain error

Differential

mode

External reference -5

/1.6 -5

/2.0 -6

Bandgap ±10

Temperature drift 0.02 mV/K

Operating voltage drift 2 mV/V

Gain error

Single ended

unsigned mode

External reference -8

/1.6 -8

/2.0 -8

Bandgap ±10

Temperature drift 0.03 mV/K

Operating voltage drift 2 mV/V

Symbol Parameter Condition

(2)

Min. Typ. Max. Units

Symbol Parameter Condition Min. Typ. Max. Units

Input resistance Switched in normal mode 4.0 k

sample

Input capacitance Switched in normal mode 4.4 pF

Signal range Gain stage output 0 AV

- 0.3 V

Propagation delay ADC conversion rate 1

Clk

ADC

cycles

Clock rate Same as ADC 100 1800 kHz

Gain error

0.5x gain, normal mode -1

1x gain, normal mode -1

8x gain, normal mode -1

64x gain, normal mode 10

Offset error,

input referred

0.5x gain, normal mode 10

1x gain, normal mode 10

8x gain, normal mode -20

64x gain, normal mode -150

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 144 145

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