MK61FN1M0VMD12 FREESCALE [Freescale Semiconductor, Inc], MK61FN1M0VMD12 Datasheet - Page 47

• Manufacturer Part Number: MK61FN1M0VMD12
• Description: K61 Sub-Family Data Sheet
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

1. Typical values assume V
2. DC potential difference.
3. This resistance is external to MCU. The analog source resistance should be kept as low as possible in order to achieve the
4. To use the maximum ADC conversion clock frequency, the ADHSC bit should be set and the ADLPC bit should be clear.
5. For guidelines and examples of conversion rate calculation, download the ADC calculator tool: http://cache.freescale.com/
Freescale Semiconductor, Inc.
Symbol
reference only and are not tested in production.
best results. The results in this datasheet were derived from a system which has <8 Ω analog source resistance. The R
C
files/soft_dev_tools/software/app_software/converters/ADC_CALCULATOR_CNV.zip?fpsp=1
C
C
AS
rate
rate
time constant should be kept to <1ns.
V
AS
ADC conversion
rate
ADC conversion
rate
Description
Table 28. 16-bit ADC operating conditions (continued)
R
Figure 18. ADC input impedance equivalency diagram
AS
DDA
K61 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
≤ 13 bit modes
No ADC hardware
averaging
Continuous
conversions enabled,
subsequent conversion
time
16 bit modes
No ADC hardware
averaging
Continuous
conversions enabled,
subsequent conversion
time
Conditions
= 3.0 V, Temp = 25°C, f
C
AS
Z
AS
V
ADIN
INPUT PIN EQUIVALENT
Pad
leakage
due to
input
protection
Preliminary
ADCK
INPUT PIN
INPUT PIN
INPUT PIN
INPUT PIN
SIMPLIFIED
20.000
37.037
CIRCUIT
Min.
= 1.0 MHz unless otherwise stated. Typical values are for
Typ.
Peripheral operating requirements and behaviors
—
—
1
Z
ADIN
818.330
461.467
CHANNEL SELECT
Max.
R
R
R
R
ADIN
ADIN
ADIN
ADIN
SIMPLIFIED
CIRCUIT
Ksps
Ksps
Unit
C
ADIN
ADC SAR
ENGINE
Notes
5
5
AS
47
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