5962R9675501TJC Просмотр технического описания (PDF) - Intersil
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5962R9675501TJC Datasheet PDF : 6 Pages
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HS-565ARH-T
Applying the HS-565ARH-T
OP AMP Selection
The HS-565ARH-T’s current output may be converted to
voltage using the standard connections shown in Figures 1
and 2. The choice of operational amplifier should be
reviewed for each application, since a significant trade-off
may be made between speed and accuracy. Remember
settling time for the DAC-amplifier combination
is:
(tD)2 + (tA)2
where tD, tA are settling times for the DAC and amplifier.
No Trim Operation
The HS-565ARH-T will perform as specified without
calibration adjustments. To operate without calibration,
substitute 50Ω resistors for the 100Ω trimming
potentiometers: In Figure 1 replace R2 with 50Ω; also
remove the network on pin 8 and connect 50Ω to ground.
For bipolar operation in Figure 2, replace R3 and R4 with
50Ω resistors.
With these changes, performance is guaranteed as shown
under Specifications, “External Adjustments”. Typical
unipolar zero will be ±0.50 LSB plus the op amp offset.
The feedback capacitor C must be selected to minimize
settling time.
R2
100Ω
REF OUT VCC
43
BIP.
OFF.
6
REF
IN 5
REF
GND
+
-
19.95
K
HS-565ARH-T
10V
IREF
0.5mA
9.95K
DAC
3.5K +
-
3K
IO
(4 x IREF
x CODE)
CODE
INPUT
7
-VEE
PWR
GND
24 . . . . .13
MSB LSB
100kΩ
100Ω
+15V
R1
50kΩ
-15V
8
5K
5K
2.5K
11
20V SPAN
10
10V SPAN
VO
DAC
OUT
9
-C
+
R (SEE
TABLE 7)
FIGURE 1. UNIPOLAR VOLTAGE OUTPUT
R4
100Ω
REF OUT
VCC
43
R3
100Ω
BIP.
OFF.
8
+
-
6
REF
IN 5
REF
GND
19.95K
10V
3.5K
3K
HS-565ARH-T
5K
IREF
0.5mA
9.95K
DAC
5K
IO
+
-
(4 x IREF
x CODE)
2.5K
CODE
INPUT
11
20V SPAN
10
10V SPAN
VO
DAC
OUT
9
-C
+
R (SEE
TABLE 7)
7
-VEE
24 . . . . .13
PWR MSB LSB
GND
FIGURE 2. BIPOLAR VOLTAGE OUTPUT
3
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