Datasheet

308
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
Notes: 1. On AT90PWM2B/3B, this value will be close to the value at 500kHz.
2. 125KHz when input signal is synchronous with amplifier clock.
26.8 DAC Characteristics
Zero Error (Offset)
Single Ended Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 1MHz
-4 0 LSB
Single Ended Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 500 kHz
-2 2.5 LSB
Differential Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 1MHz
-0.5 -0.5 LSB
Differential Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 500 kHz
-0.5 -0.5 LSB
Conversion Time Single Conversion 8 320 µs
Clock Frequency 50 2000 kHz
AV
CC
Analog Supply Voltage V
CC
- 0.3 V
CC
+ 0.3 V
V
REF
Reference Voltage
Single Ended Conversion 2.0 AV
CC
V
Differential Conversion 2.0 AV
CC - 0.2
V
V
IN
Input voltage
Single Ended Conversion GND V
REF
Differential Conversion -V
REF
/Gain +V
REF
/Gain
Input bandwidth
Single Ended Conversion 38.5 kHz
Differential Conversion 4
(2)
kHz
A
REF
Internal Voltage Reference 2.46 2.56 2.66 V
R
REF
Reference Input Resistance 30 k
R
AIN
Analog Input Resistance 100 M
I
HSM
Increased Current
Consumption
High Speed Mode
Single Ended Conversion
380 µA
Table 26-5. ADC Characteristics - T
A
= -40C to +105C, V
CC
= 2.7V to 5.5V (unless otherwise noted) (Continued)
Symbol Parameter Condition Min Typ Max Units
Table 26-6. DAC Characteristics - T
A
= -40C to +105C, V
CC
= 2.7V to 5.5V (unless otherwise noted)
Symbol Parameter Condition Min Typ Max Units
I
OUT
Output current 100 µA