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參數(shù)資料
| 型號： | QA-1000HC |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Full Featured Programmable Analog Supply Current Monitor |
| 中文描述： | 全功能可編程模擬電源電流監(jiān)視器 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 105K |
| 代理商： | QA-1000HC |
Q-Star Test nv, 2003
Due to continuous pursuit of innovation, the technical specifications listed are subject to change without notice.
Revision C - page 3 of 6
QA-1000HC
C
ONFIGURING THE
QA-1000HC
The processing unit of the QA-1000HC is configurable by
making the proper pin (jumper) connections. A set of
jumpers (JP2&3) determines the filter characteristics,
allowing to select the actual bandwidth (5MHz, 500kHz or
50kHz) in function of desired speed and accuracy. These
configurations can be changed upon request. More
information on how to configure the QA-1000HC can be
found in application note AN0024.
C
ALIBRATION
Due to component tolerances and potential leakage currents caused by the test set-up (e.g. PMU
channel connected to DUT terminal), the current-to-voltage ratio (I/V) of the QA-1000HC can differ
from module to module and/or test set-up to test set-up. Therefore, to perform accurate
measurements, a calibration of each module in relation to the test set-up used is recommended. Once
the module has been calibrated, there is no need to repeat this procedure for every application
provided the measurement conditions remain. The calibration of the QA-1000HC can be easily
performed as the module has a linear transfer characteristic. More information on how to calibrate the
QA-1000HC module can be found in application note AN0025.
A
PPLICATION
The QA-1000HC should be placed as close as possible to the DUT. All connections to the QA-
1000HC should be well designed not to degrade the monitor’s accuracy. The QA-1000HC's power-on
delay time is about 1 second. The VDUT pin must be permanently connected to a voltage source (0V-
7V) and not left floating. Although the monitor has a very high ripple rejection ratio even at RF, the
ATE should deliver a good quality V
DUT
reference signal (DUT supply voltage reference) for the DUT.
The value of the on-pin decoupling capacitance (C
L
) is preferable in the 100pF – 1uF range, higher
values can be handled but decrease the monitor’s measurement bandwidth. Global decoupling
capacitors should be placed at the VDUT side of the monitor if RF operation of VDUT is not needed.
All possible application diagrams are shown below.
2A
R
ANGE
, 5 MHz
B
ANDWIDTH
2A
R
ANGE
, 500 kHz
B
ANDWIDTH
+
GND
8
D
7
VDD / VEE
C
L
1
- 15V
J
1
2
3
4
5
6
D
QA-1000HC
D
J
N
D
G
V
N
J
V
V
V
V
G
V
1
1
1
9
1
1
1
1
1
To analog
ATE input
ATE DUT Supply
4
+ 15V
1
+
To analog
ATE input
ATE DUT Supply
4
+ 15V
1
1
1
1
1
1
1
1
9
V
V
G
V
N
J
V
V
N
D
G
V
8
QA-1000HC
D
J
5
6
7
D
1
2
3
4
GND
1
C
L
D
VDD / VEE
1
- 15V
J
State
JP
JP2
(1) (2)
JP3
(1) (2)
ON
OFF
500 kHz
50 kHz
5 MHz
(1)
Setting of bandwidth
(2)
JP2 and JP3 must be closed exclusively, only one of
them might be closed for a given configuration.
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