K20P120M100SF2 Datasheet, PDF (47/66 Pages) Freescale Semiconductor, Inc – K20 Data Sheet

6.6.3.2
Peripheral operating requirements and behaviors
12-bit DAC operating behaviors
Table 33. 12-bit DAC operating behaviors
Symbol Description
I_{DDA_DACL} Supply current — low-power mode
P
I_{DDA_DACH} Supply current — high-speed mode
P
t_DACLP Full-scale settling time (0x080 to 0xF7F) —
low-power mode
t_DACHP Full-scale settling time (0x080 to 0xF7F) —
high-power mode
t_CCDACLP Code-to-code settling time (0xBF8 to 0xC08)
— low-power mode and high-speed mode
V_dacoutl DAC output voltage range low — high-speed
mode, no load, DAC set to 0x000
V_dacouth DAC output voltage range high — high-
speed mode, no load, DAC set to 0xFFF
INL Integral non-linearity error — high speed
mode
DNL
Differential non-linearity error — V_DACR > 2
V
DNL
Differential non-linearity error — V_DACR =
VREF_OUT
V_OFFSET
E_G
PSRR
T_CO
T_GE
Rop
Offset error
Gain error
Power supply rejection ratio, V_DDA ≥ 2.4 V
Temperature coefficient offset voltage
Temperature coefficient gain error
Output resistance load = 3 kΩ
SR Slew rate -80h→ F7Fh→ 80h
• High power (SP_HP)
• Low power (SP_LP)
Min.
—
—
—
—
—
—
V_DACR
−100
—
—
—
—
—
60
—
—
—
1.2
0.05
Typ.
—
—
100
15
0.7
—
—
—
—
—
±0.4
±0.1
—
3.7
0.000421
—
1.7
0.12
Max.
150
700
200
30
1
100
V_DACR
±8
±1
±1
±0.8
±0.6
90
—
—
250
—
—
Unit
μA
μA
μs
μs
μs
mV
mV
LSB
LSB
LSB
%FSR
%FSR
dB
μV/C
%FSR/C
Ω
V/μs
Notes
1
1
1
2
3
4
5
5
6
CT Channel to channel cross talk
BW 3dB bandwidth
• High power (SP_HP)
• Low power (SP_LP)
—
—
-80
dB
kHz
550
—
—
40
—
—
1. Settling within ±1 LSB
2. The INL is measured for 0 + 100 mV to V_DACR −100 mV
3. The DNL is measured for 0 + 100 mV to V_DACR −100 mV
4. The DNL is measured for 0 + 100 mV to V_DACR −100 mV with V_DDA > 2.4 V
5. Calculated by a best fit curve from V_SS + 100 mV to V_DACR − 100 mV
6. V_DDA = 3.0 V, reference select set for V_DDA (DACx_CO:DACRFS = 1), high power mode (DACx_C0:LPEN = 0), DAC set to
0x800, temperature range is across the full range of the device
K20 Data Sheet Data Sheet, Rev. 6.1, 08/2012.
Freescale Semiconductor, Inc.
47