1033
SAM4CP [DATASHEET]
43051E–ATPL–08/14
45.5.14 10-Bit ADC Characteristics
Note:
1. Average current consumption performing conversion in free run mode @ 16 MHz ADC Clock. F
S
= 510 kS/s.
Note:
1. ADVREF input range limited to VDDIO if VDDIO < VDDIN.
Notes: 1.
t
CONV
= (TRACKTIM + 24) / f
CK_ADC.
2.
F
S
= 1 / t
CONV.
3. Refer to
Section 45.5.14.1 “Track and Hold Time versus Source Output Impedance, Effective Sampling Rate”
.
Table 45-33. ADC Power Supply Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
VDDIN
Supply Voltage Range
(VDDIN)
2.5
3.3
3.6
V
I
VDDIN
Current Consumption on
VDDIN
ADC ON
(1)
, Internal Voltage Reference
ON generating ADVREF = 3.0V
ADC ON
(1)
, Internal Voltage Reference
OFF, ADVREF externally supplied
—
450
700
μ
A
—
220
350
Table 45-34. ADC Voltage Reference Input Characteristics (ADVREF pin)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
ADVREF
ADVREF Input Voltage Range
(1)
Internal Voltage Reference OFF
2.4
—
V
VDDIN
V
R
ADVREF
ADVREF Input Resistance
ADC ON, Internal Voltage Reference OFF
9
14
19
k
Ω
I
ADVREF
Current Consumption on ADVREF
ADVREF = 2.4V
-35%
170
+35%
μ
A
ADVREF = 3.3V
235
ADVREF = 3.6V
260
C
ADVREF
Decoupling capacitor on ADVREF
100
—
—
nF
Table 45-35. ADC Timing Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
f
CK_ADC
ADC Clock Frequency
3.0V
VDDIN
3.6V
2.5V
VDDIN
3.0V
—
—
16
14
MHz
t
CONV
ADC Conversion Time
(1)
f
CK_ADC
= 16 MHz, t
TRACK
= 500 ns
1.95
—
—
μ
s
F
S
Sampling Rate
(2)
V
VDDIN
> 3.0V, f
CK_ADC
= 16 MHz
V
VDDIN
> 2.5V, f
CK_ADC
= 14 MHz
—
—
510
380
kS/s
t
ON
Startup Time
ADC only
—
—
40
μ
s
t
TRACK
Track and Hold Time
(3)
2.5V
VDDIN
3.0V
3.0V < VDDIN < 3.6V
1000
500
—
—
ns