DSP56F801 Motorola Inc, DSP56F801 Datasheet - Page 37

• Manufacturer Part Number: DSP56F801
• Description: 56F801 16-bit Hybrid Controller
• Manufacturer: Motorola Inc

Freescale Semiconductor
1. Parasitic capacitance due to package, pin to pin, and pin to package base coupling. (1.8pf)
2. Parasitic capacitance due to the chip bond pad, ESD protection devices and signal routing. (2.04pf)
3. 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)
Total Harmonic Distortion
Signal-to-Noise plus Distortion
Effective Number of Bits
Spurious Free Dynamic Range
Bandwidth
ADC Quiescent Current (both ADCs)
V
1. For optimum ADC performance, keep the minimum V
a digital output code of 0 or cause erroneous conversions.
2. V
3. Measured in 10-90% range.
4. LSB = Least Significant Bit.
5. Guaranteed by characterization.
6.
REF
t
AIC = 1/
Quiescent Current (both ADCs)
REF
must be equal to or less than V
ADC analog input
Characteristic
f
ADIC
5
5
Table 3-15 ADC Characteristics (Continued)
Figure 3-26 Equivalent Analog Input Circuit
1
5
5
DDA
56F801 Technical Data, Rev. 16
- 0.3V and must be greater than 2.7V.
Symbol
SINAD
ENOB
SFDR
I
2
THD
I
VREF
BW
ADC
ADCIN
value > 250mV. Inputs less than 250mV volts may convert to
Min
8.5
55
54
60
—
—
—
3
Typ
100
9.5
60
56
65
50
12
Analog-to-Digital Converter (ADC) Characteristics
4
Max
16.5
—
—
—
—
—
—
Unit
KHz
mA
mA
dB
dB
dB
bit
37