参数资料
型号: XRD9825EVAL
厂商: Exar Corporation
文件页数: 28/33页
文件大小: 0K
描述: EVAL BOARD FOR XRD9825
标准包装: 1
系列: *
XRD9825
4
Rev. 1.00
ELECTRICAL CHARACTERISTICS
Test Conditions: AV
DD=DVDD=5V, ADCCLK=12MHz, 50% Duty Cycle, TA=25°C unless otherwise specified.
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
Power Supplies
AV
DD
Analog Power Supply
3.0
3.3
5.5
V
(Note 2)
DV
DD
Digital I/O Power Supply
3.0
3.3
5.5
V
DV
DD < AVDD
I
DD
Supply Current
25
40
60
mA
V
DD=5V
IDD
PD
Power Down Power Supply Current
50
AV
DD=5V
ADC Specifications
RES
Resolution
16
Bits
F
s
Maximum Sampling Rate
12
MSPS
DNL
Differential Non-Linearity
-0.7, +1.5
LSB
ADCCLK = 10MHz
-0.8, +2.0
ADCCLK = 12MHz
V
RB
Bottom Reference Voltage
AV
DD/10
V
REF
Differential Reference Voltage
0.3
0.67AV
DD
V
(V
RT - VRB)
R
L
Ladder Resistance
300
600
780
PGA & Offset DAC Specifications
PGARES
PGA Resolution
6
Bits
PGAG
MIN
Minimum Gain
0.950
1.0
1.050
V/V
PGAG
MAX
Maximum Gain
9.5
10.0
10.50
V/V
PGAGD
Gain Adjustment Step Size
0.14
V/V
V
BLACK
Black Level Input Range
-100
500
mV
DC Configuration
DACRES
Offset DAC Resolution
8
Bits
OFF
MIN
Minimum Offset Adjustment
-250
-200
-150
mV
Mode 111, D5=0 (Note 1)
OFF
MAX
Maximum Offset Adjustment
+500
+600
+700
mV
Mode 111, D5=0
OFF
MIN
Minimum Offset Adjustment
-450
-400
-350
mV
Mode 111, D5=1 (Note 1)
OFF
MAX
Maximum Offset Adjustment
+350
+400
+450
mV
Mode 111, D5=1
OFF
Offset Adjustment Step Size
3.125
mV
Note 1:
The additional ±100 mV of adjustment with respect to the black level input range is needed to compensate
for any additional offset introduced by the XRD9825 Buffer/PGA internally.
Note 2:
It is not recommended to operate the part between 3.6V and 4.4V.
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