Datasheet

Analog Integrated Circuit Device Data
Freescale Semiconductor 72
MC34708
Functional Block Description
Table 61. VDAC Voltage Control
Parameter Value Output Voltage ILoad max
VDAC 00 2.500 V 250 mA
01 2.600 V 250 mA
10 2.700 V 250 mA
11 2.775 V 250 mA
Table 62. VDAC Electrical Specification
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
GENERAL
V
DACIN
Operating Input Voltage Range V
INMIN
to V
INMAX
V
NOM
+
0.25
- 4.5 V
I
DAC
Operating Current Load Range IL
MIN
to IL
MAX
• Not exceeding PNP max power
0.0 - 250
mA
V
DACIN
Extended Input Voltage Range
• Performance may be out of specification
UVDET - 4.5
V
VDAC ACTIVE MODE – DC
V
DAC
Output Voltage V
OUT
•V
INMIN
< V
IN
< V
INMAX
IL
MIN
< IL < IL
MAX
V
NOM
– 3% V
NOM
V
NOM
+ 3%
V
V
DACLOPP
Load Regulation
•1.0 mA < IL < IL
MAX
For any V
INMIN
< V
IN
< V
INMAX
- 0.20 -
mV/mA
V
DACLIPP
Line Regulation
•V
INMIN
< V
IN
< V
INMAX
For any IL
MIN
< IL < IL
MAX
- 5.0 -
mV
I
DACQ
Active Mode Quiescent Current
•V
INMIN
< V
IN
< V
INMAX
IL = 0
- 30 -
µA
VDAC LOW POWER MODE – DC - VDACMODE=1
V
DAC
Output Voltage V
OUT
•V
INMIN
< V
IN
< V
INMAX
IL
MINLP
< IL < IL
MAXLP
V
NOM
– 3% V
NOM
V
NOM
+ 3%
V
I
DAC
Current Load Range IL
MINLP
to IL
MAXLP
0.0 - 3.0 mA
I
DACQ
Low Power Mode Quiescent Current
•V
INMIN
< V
IN
< V
INMAX
IL = 0
- 8.0 -
µA
VDAC ACTIVE MODE – AC
VDAC
PSRR
PSRR - IL = 75% of IL
MAX
20 Hz to 20 kHz
•V
IN
= V
INMIN
+ 100 mV
•V
IN
= V
NOM
+ 1.0 V
-
-
50
50
-
-
dB
t
ON-VDAC
Turn-on Time
• Enable to 90% of end value V
IN
= V
INMIN
, V
INMAX
IL = 0
- - 1.0
ms
t
OFF-VDAC
Turn-off Time
• Disable to 10% of initial value V
IN
= V
INMIN
, V
INMAX
, IL = 0
0.05 - 10
ms