參數(shù)資料
型號(hào): DSP56F801
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: 16-bit Hybrid Controller(16位混合控制器)
中文描述: 16位混合控制器(16位混合控制器)
文件頁(yè)數(shù): 33/44頁(yè)
文件大小: 858K
代理商: DSP56F801
Analog-to-Digital Converter (ADC) Characteristics
56F801 Technical Data
33
Figure 28. Equivalent Analog Input Circuit
1.
2.
3.
Parasitic capacitance due to package, pin to pin, and pin to package base coupling. (1.8pf)
Parasitic capacitance due to the chip bond pad, ESD protection devices and signal routing. (2.04pf)
Equivalent resistance for the ESD isolation resistor and the channel select mux. (500 ohms)
4. Sampling capacitor at the sample and hold circuit. Capacitor 4 is normally disconnected from the input
and is only connected to it at sampling time. (1pf)
Spurious Free Dynamic Range
5
SFDR
60
65
dB
Bandwidth
BW
100
KHz
ADC Quiescent Current (both ADCs)
I
ADC
50
mA
V
REF
Quiescent Current (both ADCs)
I
VREF
12
16.5
mA
1.
convert to a digital output code of 0 or cause erroneous conversions.
2.
V
REF
must be equal to or less than V
DDA
and must be greater than 2.7V. For optimal ADC performance, set V
REF
to V
DDA
-0.3V.
3.
Measured in 10-90% range.
4.
LSB = Least Significant Bit.
5.
Guaranteed by characterization.
6.
t
AIC
= 1/
f
ADIC
For optimum ADC performance, keep the minimum V
ADCIN
value > 250mV. Inputs less than 250mV volts may
Table 28. ADC Characteristics (Continued)
Operating Conditions:
V
SS
= V
SSA
= 0 V, V
DD
= V
DDA
= 3.0–3.6 V, V
REF
= V
DD
-0.3V, ADCDIV = 4, 9, or 14 (for optimal
performance), ADC clock = 4MHz, 3.0–3.6 V, T
A
= –40
°
to +85
°
C, C
L
50pF
Characteristic
Symbol
Min
Typ
Max
Unit
1
2
3
4
ADC analog input
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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