MC908AP16CFAE Datasheet, PDF (304/324 Pages) Freescale Semiconductor, Inc – Table of Contents

Electrical Specifications
22.8 5V ADC Electrical Characteristics
Table 22-7. ADC Electrical Characteristics (5V)
Characteristic⁽¹⁾
Symbol
Min
Max
Unit
Supply voltage
V_DDA
4.5
5.5
V
Input range
Resolution
V_ADIN
0
B_AD
10
V_DDA
V
10
bits
Absolute accuracy
A_AD
—
± 1.5
LSB
ADC internal clock
f_ADIC
500 k
1.048 M
Hz
Conversion range
R_AD
V_REFL
V_REFH
V
ADC voltage reference
high
V_REFH
—
V_DDA + 0.1
V
ADC voltage reference
low
V_REFL
V_SSA – 0.1
—
V
Conversion time
t_ADC
16
17
t_ADIC
cycles
Sample time
t_ADS
5
—
t_ADIC
cycles
Monotonicity
M_AD
Guaranteed
Zero input reading
Z_ADI
000
001
HEX
Full-scale reading
F_ADI
3FD
3FF
HEX
Input capacitance
C_ADI
—
20
pF
Input impedance
R_ADI
20 M
—
Ω
V_REFH/V_REFL
I_VREF
—
1.6
mA
1. V_DD = 4.5 to 5.5 Vdc, V_SS = 0 Vdc, T_A = T_L to T_H, unless otherwise noted.
Notes
V_DDA is an dedicated pin and should
be tied to V_DD on the PCB with
proper decoupling.
V_ADIN ≤ V_DDA
Includes quantization.
±0.5 LSB = ±1 ADC step.
t_ADIC = 1/f_ADIC
V_ADIN = V_REFL
V_ADIN = V_REFH
Not tested.
Not tested.
MC68HC908AP Family Data Sheet, Rev. 4
302
Freescale Semiconductor