mc68hc908qf4 Freescale Semiconductor, Inc, mc68hc908qf4 Datasheet - Page 183

• Manufacturer Part Number: mc68hc908qf4
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

17.10 Analog-to-Digital (ADC) Converter Characteristics
17.10.1 ADC Electrical Operating Conditions
17.10.2 ADC Performance Characteristics
MC68HC908QF4 — Rev. 1.0
MOTOROLA
Condition A
Condition B
Input voltages
Resolution (1 LSB)
Absolute accuracy
Conversion range
Power-up time
Conversion time
Sample time
Zero input reading
Full-scale reading
Input capacitance
Input leakage
ADC supply current (V
1. Source impedances greater than 10 kΩ adversely affect internal RC charging time during input sampling.
2. Zero-input/full-scale reading requires sufficient decoupling measures for accurate conversions.
3. The external system error caused by input leakage current is approximately equal to the product of R source and input
(Total unadjusted error)
current.
(1)
(3)
Characteristic
(3)
(2)
ATD supply
ADC internal clock
Ambient temperature
ATD supply
ADC internal clock
Ambient temperature
DD
The ADC accuracy characteristics below are guaranteed over two operating
conditions as stated here.
= 3 V)
Freescale Semiconductor, Inc.
Condition A
Condition B
Condition A
Condition B
For More Information On This Product,
Characteristic
Go to: www.freescale.com
Electrical Specifications
Symbol
V
t
I
E
RES
V
ADPU
t
Z
C
t
F
ADAD
ADC
ADIN
ADS
TUE
I
AIN
ADI
ADI
ADI
IL
10.5
8.99
Min
V
V
Typical = 0.45
FE
16
16
00
—
—
—
—
5
SS
SS
Analog-to-Digital (ADC) Converter Characteristics
± 1.5
± 2.0
Max
14.1
10.5
V
V
± 1
FF
17
01
—
—
DD
DD
8
t
t
t
ADIC
ADIC
ADIC
Symbol
f
f
V
V
ADIC
ADIC
Unit
LSB
Hex
Hex
T
T
mV
mA
pF
µA
DD
DD
A
A
V
V
cycles
cycles
cycles
0.008
Min
2.7
2.3
Electrical Specifications
T
8
0
Includes quantization
L
t
t
t
ADIC
ADIC
ADIC
Comments
Not tested
V
V
Enabled
IN
IN
Max
= 1/f
= 1/f
= 1/f
3.6
2.7
T
T
63
—
—
—
—
= V
= V
1
H
H
DD
SS
ADIC
ADIC
ADIC
Data Sheet
MHz
Unit
kHz
°C
°C
V
V
183