ꢍ ꢓꢋ ꢀꢙ ꢈꢉ
ꢍ ꢓꢋ ꢀꢙ ꢈꢙ
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SBAS280C − JUNE 2003 − REVISED JUNE 2004
ELECTRICAL CHARACTERISTICS (continued)
All specifications at −40°C to +85°C, AVDD = 5V, DVDD = IOVDD = 3V, f
= 40MHz, External V
REF
= +3V, V = 2.0V, FIFO disabled, and
CM
CLK
R
BIAS
= 37kΩ, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
(1)
Voltage Reference
V
= (VREFP − VREFN)
2.5
3.75
0.75
2.3
3.0
4.0
1.0
2.5
50
3.2
4.25
1.25
2.8
V
REF
VREFP
VREFN
VMID
V
V
V
V
REF
drift
Internal reference (REFEN = low)
Internal reference (REFEN = low)
ppm/°C
ms
Startup time
Clock Input
Frequency (f
Duty Cycle
15
)
1
40
50
55
MHz
%
CLK
f
= 40MHz
45
CLK
Digital Input/Output
V
V
V
V
0.7 IOVDD
DGND
IOVDD
V
V
IH
0.3 IOVDD
IL
I
I
= 50µA
= 50µA
0.8 IOVDD
V
OH
OL
OH
0.2 IOVDD
10
V
OL
Input leakage
DGND < V
DIGIN
< IOVDD
µA
Power-Supply Requirements
AVDD
DVDD
IOVDD
4.75
2.7
5.25
3.3
5.25
135
105
35
V
V
2.7
V
REFEN = low
REFEN = high
110
85
27
3
mA
mA
mA
mA
AVDD current (I
DVDD current (I
)
AVDD
)
DVDD
IOVDD current (I
)
IOVDD = 3V
5
IOVDD
AVDD = 5V, DVDD = 3V, IOVDD = 3V,
REFEN = high
515
5
645
mW
mW
Power dissipation
PD = low, CLK disabled
Temperature Range
Specified
−40
−40
−60
+85
+105
+150
°C
°C
Operating
Storage
°C
Thermal Resistance, q
25
°C/W
°C/W
JA
PowerPAD soldered to PCB with 2oz.
trace and copper pad.
q
0.5
JC
(1)
The specification limits for VREF, VREFP, VREFN, and VMID apply when using the internal or an external reference. The internal reference
voltages are bounded by the limits shown. When using an external reference, the limits indicate the allowable voltages that can be applied to the
reference pins.
5
BB [ BURR-BROWN CORPORATION ]
