K60P100M100SF2 Datasheet, PDF (47/73 Pages) Freescale Semiconductor, Inc – Up to 100 MHz ARM Cortex-M4 core with DSP instructions delivering 1.25 Dhrystone MIPS per MHz

Peripheral operating requirements and behaviors
Table 27. 16-bit ADC with PGA characteristics (continued)
Symbol
ENOB
Description
Effective number
of bits
Conditions
• Gain=1, Average=4
• Gain=1, Average=8
• Gain=64, Average=4
• Gain=64, Average=8
• Gain=1, Average=32
• Gain=2, Average=32
• Gain=4, Average=32
• Gain=8, Average=32
• Gain=16, Average=32
• Gain=32, Average=32
• Gain=64, Average=32
Min.
Typ.¹
Max.
Unit
Notes
TBD
12.3
—
bits
16-bit
TBD
12.7
—
bits
differential
mode,
TBD
8.4
—
bits
f_in=500Hz
TBD
8.7
—
bits
TBD
13.3
—
bits
TBD
13.1
—
bits
TBD
12.5
—
bits
TBD
11.8
—
bits
TBD
11.1
—
bits
TBD
10.2
—
bits
TBD
9.3
—
bits
SINAD
Signal-to-noise
plus distortion
ratio
See ENOB
6.02 × ENOB + 1.76
dB
1. Typical values assume V_DDA =3.0V, Temp=25°C, f_ADCK=6MHz unless otherwise stated.
2. Between IN+ and IN-. The PGA draws a DC current from the input terminals. The magnitude of the DC current is a strong
function if input common mode voltage (V_CM) and the PGA gain.
3. This is the input leakage current of the module in addition to the PAD leakage current.
4. _{Gain = 2}^PGAG
5. When the PGA gain is changed, it takes some time to settle the output for the ADC to work properly. During a gain
switching, a few ADC outputs should be discarded (minimum two data samples, may be more depending on ADC
sampling rate and time of the switching).
6. Limit the input signal swing so that the PGA does not saturate during operation. Input signal swing is dependent on the
PGA reference voltage and gain setting.
6.6.2 CMP and 6-bit DAC electrical specifications
Table 28. Comparator and 6-bit DAC electrical specifications
Symbol
V_DD
I_DDHS
I_DDLS
V_AIN
V_AIO
Description
Supply voltage
Supply current, High-speed mode (EN=1, PMODE=1)
Supply current, low-speed mode (EN=1, PMODE=0)
Analog input voltage
Analog input offset voltage
Min.
1.71
—
—
V_SS – 0.3
—
Typ.
—
—
—
—
—
Max.
3.6
200
20
V_DD
20
Unit
V
μA
μA
V
mV
Table continues on the next page...
K60 Sub-Family Data Sheet Data Sheet, Rev. 4, 3/2011.
Freescale Semiconductor, Inc.
Preliminary
47