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參數(shù)資料
| 型號： | RC7352QA |
| 英文描述： | ATE Circuit |
| 中文描述： | 自動測試電路 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 72K |
| 代理商： | RC7352QA |
PRODUCT SPECIFICATION
RC7352
3
Pin Description
Pin Name
+V
S
Pin Number Pin Description
28
+V
S
should be bypassed to ground with a 10.0
m
F tantalium capacitor placed as
close to the pin as possible.
16
–V
S
should be bypassed to ground with a 10.0
m
F tantalium capacitor placed as
close to the pins as possible.
3
V
EE
is the negative supply for range D. This pin should be bypassed with a 0.1
m
F
ceramic capacitor to ground.
8
This pin should be connected to the printed circuit board’s ground plane.
23
Input reference voltage for V
OUT
or I
OUT
. In the force voltage measure current mode
(FV/MI)
V(I/V
OUT
) = V(I/V
IN
)
and
V(I/VM) = 4 x I
OUT
x R
Where I
OUT
is the device output current and R is the range resistor.
In the Force Current/Measure Voltage Mode
-V
S
V
EE
GND
I/V
IN
V(I/VM) = V(I/V
OUT
)
The Load or Device under test is connected to I/V
OUT
. The current to the load is
supplied via the appropriate range resistor with I/V
OUT
serving as the voltage
feedback point for the PMUs internal instrumentation amplifier.
A TTL/CMOS signal applied to this pin selects either Force Voltage/Measure Current
or Force Current/Measure Voltage mode. A TTL/CMOS low level will select Force
Voltage/Measure Current function. A TTL/CMOS high level selects Force Current/
Measure Voltage mode.
Resistor R
A
should be placed between R
A
and I/V
OUT
. R
A
tolerance should be
better than +0.05% to improve gain error. Maximum current for range A is shown in
the equation below.
I/V
OUT
7
SI/V
13
R
A
9
The
±
2 volts represents the maximum voltage V
A
across R
A
. For Range A, I
A
should
not exceed
±
20
m
A, i.e., R
A
should be higher than or equal to 100 k
W
. A metal film
resistor should be used to reduce inherent resistor noise (schott and pop corn noise)
and improve resolution. For maximum stability, a 300 pF capacitor should be
connected across R
A
.
For Range B, I
B
should not exceed
±
200
m
A, i.e., R
B
should be higher than or equal
to 10 k
W
with
±
0.05% tolerance. For maximum stability a 1,000 pF capacitor should
be connected across R
B
.
For Range C, I
C
should not exceed
±
1 mA, i.e., R
C
should be higher than or equal to
2 k
W
with
±
0.05% tolerance.
For Range D, I
D
should not exceed
±
40 mA, i.e., R
D
should be higher than or equal
to 50
W
with
±
0.05% tolerance.
Two diodes must be connected between D & R
D
as shown in the block diagram.
A 30pF capacitor placed between these pins will improve stability.
Range D output for current limiting. An external resistor is connected between RDIL
and D to limit current to a value I
LIM
= 0.8V/R
LM
.
R
B
19
R
C
22
R
D
24
D
C
A
, C
B
R
DIL
1
6, 25
2
I
OUT
′
)
R
V4
=
I
A
A
R
=
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