Electrical Specifications
Analog-to-Digital Converter (ADC) Characteristics
19.13 Analog-to-Digital Converter (ADC) Characteristics
Characteristic
Symbol
Min
Typ
Max
Unit
Notes
VDDAD should be tied to
VDDAD
Supply voltage
4.5
—
5.5
V
the same potential as
VDD via separate traces
VADIN
BAD
VDDAD
VADIN <= VDDAD
Input voltages
0
10
—
—
—
—
—
—
—
—
V
Bits
Resolution
10
± 4
AAD
Absolute accuracy
ADC internal clock
Conversion range
Power-up time
—
LSB
Includes quantization
fADIC
RAD
tAIC = 1/fADIC
500 k
VSSAD
1.048 M
VDDAD
Hz
V
tADPU
tADC
tADS
MAD
ZADI
FADI
CADI
IVREF
tAIC cycles
tAIC cycles
tAIC cycles
16
16
5
—
17
—
Conversion time
Sample time
Monotonicity
Guaranteed
VADIN = VSSAD
ADIN = VDDAD
Zero input reading
Full-scale reading
Input capacitance
VREFH/VREFL current
000
3FC
—
—
—
003
3FF
30
Hex
Hex
pF
V
—
Not tested
—
1.6
—
mA
Absolute accuracy
(8-bit truncation mode)
AAD
—
—
—
—
—
± 1
LSB
LSB
Includes quantization
Quantization error
(8-bit truncation mode)
+ 7/8
– 1/8
MC68HC908MR32 • MC68HC908MR16 — Rev. 6.0
MOTOROLA
Data Sheet
299
Electrical Specifications
FREESCALE [ Freescale ]
