MK20DN512VMC10 FREESCALE [Freescale Semiconductor, Inc], MK20DN512VMC10 Datasheet - Page 45

• Manufacturer Part Number: MK20DN512VMC10
• Description: K20 Sub-Family
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

1. Typical values assume V
2. ADC must be configured to use the internal voltage reference (VREF_OUT)
3. PGA reference is internally connected to the VREF_OUT pin. If the user wishes to drive VREF_OUT with a voltage other
4. For single ended configurations the input impedance of the driven input is R
5. The analog source resistance (R
6. The minimum sampling time is dependent on input signal frequency and ADC mode of operation. A minimum of 1.25µs
7. ADC clock = 18 MHz, ADLSMP = 1, ADLST = 00, ADHSC = 1
8. ADC clock = 12 MHz, ADLSMP = 1, ADLST = 01, ADHSC = 1
6.6.1.4 16-bit ADC with PGA characteristics with Chop enabled
Freescale Semiconductor, Inc.
I
Symbol
Symbol
DDA_PGA
I
DC_PGA
reference only and are not tested in production.
than the output of the VREF module, the VREF module must be disabled.
in PGA gain without affecting other performances. This is not dependent on ADC clock frequency.
time should be allowed for F
8 MHz ADC clock.
C
rate
ADC conversion
rate
Description
Supply current
Input DC current
(ADC_PGA[PGACHPb] =0)
Description
Table 29. 16-bit ADC with PGA operating conditions (continued)
DDA
Table 30. 16-bit ADC with PGA characteristics
in
≤ 13 bit modes
No ADC hardware
averaging
Continuous conversions
enabled
Peripheral clock = 50
MHz
16 bit modes
No ADC hardware
averaging
Continuous conversions
enabled
Peripheral clock = 50
MHz
Conditions
= 3.0 V, Temp = 25°C, f
=4 kHz at 16-bit differential mode. Recommended ADC setting is: ADLSMP=1, ADLSTS=2 at
Low power
(ADC_PGA[PGALPb]=0)
Gain =1, V
V
Gain =64, V
V
Conditions
CM
CM
AS
K20 Sub-Family Data Sheet, Rev. 1, 6/2012.
=0.5V
=0.1V
), external to MCU, should be kept as minimum as possible. Increased R
REFPGA
Table continues on the next page...
General Business Information
REFPGA
=1.2V,
=1.2V,
Preliminary
ADCK
18.484
37.037
Min.
= 6 MHz unless otherwise stated. Typical values are for
Min.
—
—
—
Typ.
Peripheral operating requirements and behaviors
—
—
1
PGAD
Typ.
1.54
0.57
420
/2
1
Max.
450
250
Max.
644
—
—
Ksps
Ksps
Unit
Unit
μA
μA
μA
A
AS
Notes
causes drop
Notes
7
8
2
3
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