Datasheet

1449
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
47.8 12-bit DAC Characteristics
External voltage reference for DAC is ADVREF. See the ADC voltage reference characteristics Table 47-29,
“ADVREF Electrical Characteristics,” on page 1438.
Note: DAC Clock (f
DAC
)= 5 MHz, f
S
= 200 kHz, IBCTL = 01.
Note: DAC Clock (f
DAC
)= 50 MHz, f
S
= 2 MHz, f
IN
= 241 kHz, IBCTL = 01, FFT using 1024 points or more, Frequency band = [10
kHz,1 MHz] – Nyquist conditions fulfilled.
Table 47-48. Analog Power Supply Characteristics
Symbol Parameter Conditions Min Typ Max Units
V
VDDIN
Analog Supply 2.4 3.0 3.6 V
I
VDDIN
Current Consumption
Sleep Mode (Clock OFF) 3 µA
Fast Wake-up (Standby Mode, Clock on) 2 3 mA
Normal Mode with 1 Output ON
(IBCTLDACCORE = 01, IBCTLCHx =10)
—4.3 5.6mA
Normal Mode with 2 Outputs ON
(IBCTLDACCORE =01, IBCTLCHx =10)
—5 6.5mA
Table 47-49. Channel Conversion Time and DAC Clock
Symbol Parameter Conditions Min Typ Max Units
f
DAC
Clock Frequency 1 50 MHz
t
CP_DAC
Clock Period 20 1000 ns
t
REFRESH
Refresh Time Between
Conversions
—20µs
f
S
Sampling Frequency 0.05 2 MHz
t
START-UP
Startup time
From Sleep Mode to Normal Mode:
- Voltage Reference OFF
- DAC Core OFF
20 30 40
µs
From Fast Wake-Up to Normal Mode:
- Voltage Reference ON
- DAC Core OFF
2.5 3.75 5
t
CONV
Conversion Time 25 t
CP_DAC
Table 47-50. Static Performance Characteristics
Parameter Conditions Min Typ Max Units
Resolution 12 bit
Integral Non-linearity (INL)
2.4V < V
VDDIN
<2.7V -6 +6
LSB
2.7V < V
VDDIN
<3.6V -2.5 ±1 +2.5
Differential Non-linearity (DNL)
2.4V < V
VDDIN
<2.7V
-2.5 ±1 +2.5 LSB
2.7V < V
VDDIN
<3.6V
Offset Error -32 ±8 32 LSB
Gain Error -32 ±2 32 LSB