K60P144M100SF2_1109 Datasheet, PDF (49/79 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
Table 30. 16-bit ADC with PGA characteristics (continued)
Symbol
SNR
Description
Signal-to-noise
ratio
Conditions
• Gain=1
• Gain=64
THD
Total harmonic
distortion
• Gain=1
• Gain=64
SFDR
Spurious free
dynamic range
• Gain=1
• Gain=64
ENOB
Effective number
of bits
• Gain=1, Average=4
• Gain=64, Average=4
• 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.
80
52
85
49
85
53
11.6
7.2
12.8
11.0
7.9
7.3
6.8
6.8
7.5
Typ.¹
90
66
Max.
—
—
100
—
95
—
105
—
88
—
13.4
—
9.6
—
14.5
—
14.3
—
13.8
—
13.1
—
12.5
—
11.5
—
10.6
—
Unit
Notes
dB
16-bit
dB
differential
mode,
Average=32
dB
16-bit
dB
differential
mode,
Average=32,
f_in=100Hz
dB
16-bit
dB
differential
mode,
Average=32,
f_in=100Hz
bits
16-bit
bits
differential
mode,f_in=100H
bits
z
bits
bits
bits
bits
bits
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. This current is a PGA module adder, in addition to and ADC conversion currents.
3. Between IN+ and IN-. The PGA draws a DC current from the input terminals. The magnitude of the DC current is a strong
function of input common mode voltage (V_CM) and the PGA gain.
4. _{Gain = 2}^PGAG
5. After changing the PGA gain setting, a minimum of 2 ADC+PGA conversions should be ignored.
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 31. Comparator and 6-bit DAC electrical specifications
Symbol
V_DD
I_DDHS
Description
Supply voltage
Supply current, High-speed mode (EN=1, PMODE=1)
Min.
1.71
—
Typ.
—
—
Max.
3.6
200
Table continues on the next page...
K60 Sub-Family Data Sheet Data Sheet, Rev. 6, 9/2011.
Freescale Semiconductor, Inc.
Unit
V
μA
49