mc68hc912bd32 Freescale Semiconductor, Inc, mc68hc912bd32 Datasheet - Page 264

• Manufacturer Part Number: mc68hc912bd32
• Description: 16-bit Device Composed Of Standard On-chip Peripherals
• Manufacturer: Freescale Semiconductor, Inc

Preliminary Electrical Characteristics
MC68HC912BD32 Rev 1.0
8-Bit resolution
8-Bit Differential non-linearity
8-Bit Integral non-linearity
8- Bit Absolute error
10-Bit Resolution
10-Bit Differential non-linearity
10-Bit Integral non-linearity
10-Bit Absolute error
Maximum source impedance
1. V
2. At V
3. These values include quantization error which is inherently 1/2 count for any A/D converter.
4. Maximum source impedance is application-dependent. Error resulting from pin leakage depends on junction leakage into
the pin and on leakage due to charge-sharing with internal capacitance.
Error from junction leakage is a function of external source impedance and input leakage current. Expected error in result
value due to junction leakage is expressed in voltage (V
where I
clock speed, the number of channels being scanned, and source impedance. For 8-bit conversions, charge pump leakage
is computed as follows:
RH
REF
V
OFF
V
RL
= 5.12V, one 8-bit count = 20 mV, and one 10-bit count = 5mV.
DD
is a function of operating temperature. Charge-sharing effects with internal capacitors are a function of ATD
5.12V; V
(1)
5.0 Vdc 5%, V
1
Characteristic
(2),(3)
(2),(3)
Table 71 Analog Converter Characteristics (Operating)
DDA
(2)
(2)
V
(2)
SSA
(2)
V
Freescale Semiconductor, Inc.
SS
ERRJ
For More Information On This Product,
5.12V
0 Vdc, T
Preliminary Electrical Characteristics
.25pF
Go to: www.freescale.com
A
V
DDA
T
L
to T
V
ERRJ
ERRJ
R
S
H
, ATD Clock
):
ATDCLK/(8
Symbol
1 count
1 count
R
DNL
DNL
INL
INL
AE
AE
R
S
S
I
OFF
number of channels)
2 MHz, unless otherwise noted
Min
0.5
-1
-2
-2
1
1
Typical
20
20
5
See note
Max
0.5
1
2
2
1
1
(4)
count
count
count
count
count
count
Unit
mV
mV
K
6-elec