Datasheet

Analog Integrated Circuit Device Data
83 Freescale Semiconductor
MC34708
Functional Block Description
7.7.5 ADC Specifications
Table 77. ADC Electrical Specifications
Characteristics noted under conditions BP = 3.6 V, V
BUS
= 5.0 V, - 40 C  T
A
 85 C, unless otherwise noted. Typical values
at BP = 3.6 V and T
A
= 25 °C under nominal conditions, unless otherwise noted.
Symbol Characteristic Min Typ Max Unit Notes
ADC
I
CONVER
Conversion Current
- 1.0 - mA
V
ADCIN
Converter Core Input Range
• Single ended voltage readings
• Differential readings
0.0
-1.2
-
-
2.4
1.2
V
t
CONVERT
Conversion Time per channel
- - 10 s
Integral Non-linearity
- - 3 LSB
Differential Non-linearity
- - 1 LSB
Zero Scale Error (Offset)
- - 5 LSB
Full Scale Error (Gain)
- - 10 LSB
Drift over temperature
- - 10 LSB
t
ON-OFF-ADC
Turn on/off time
- - 31 s
BATTERY CURRENT READING
(64)
Amplifier Gain
19 20 21
Amplifier Offset
-2.0 - 2.0 mV
Sense Resistor
- 20 - m
DIE TEMPERATURE VOLTAGE READING
Die Temperature Read Out Code at 25 °C
- 680 - Decimal
Slope temperature change per LSB
- 0.426 - °C/LSB
Slope error
- - 5.0 %
Notes
64. Amplifier Bias Current accounted for in overall ADC current drain