- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371762 > HA9P2546-5 (INTERSIL CORP) 30MHz, Voltage Output, Two Quadrant Analog Multiplier PDF資料下載
參數(shù)資料
| 型號： | HA9P2546-5 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 30MHz, Voltage Output, Two Quadrant Analog Multiplier |
| 中文描述： | ANALOG MULTIPLIER OR DIVIDER, 30 MHz BAND WIDTH, PDSO16 |
| 封裝： | PLASTIC, MS-013-AA, SOIC-16 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大小： | 641K |
| 代理商： | HA9P2546-5 |
6
Application Information
Theory Of Operation
The HA-2546 is a two quadrant multiplier with the following
three differential inputs; the signal channel, V
Y
+ and V
Y
-,
the control channel, V
X
+ and V
X
-, and the summed channel,
V
Z
+ and V
Z
-, to complete the feedback of the output
amplifier. The differential voltages of channel X and Y are
converted to differential currents. These currents are then
multiplied in a circuit similar to a Gilbert Cell multiplier,
producing a differential current product. The differential
voltage of the Z channel is converted into a differential
current which then sums with the products currents. The
differential “product/sum” currents are converted to a single-
ended current and then converted to a voltage output by a
transimpedance amplifier.
The open loop transfer equation for the HA-2546 is:
The scale factor is used to maintain the output of the
multiplier within the normal operating range of
±
5V. The
scale factor can be defined by the user by way of an optional
external resistor, R
EXT
, and the Gain Adjust pins, Gain
Adjust A (GA A), Gain Adjust B (GA B), and Gain Adjust C
(GA C). The scale factor is determined as follows:
The scale factor can be adjusted from 2 to 5. It should be
noted that any adjustments to the scale factor will affect the
AC performance of the control channel, V
X
. The normal
input operating range of V
X
is equal to the scale factor
voltage.
The typical multiplier configuration is shown in Figure 2. The
ideal transfer function for this configuration is:
The V
X-
pin is usually connected to ground so that when
V
X+
is negative there is no signal at the output, i.e. two
quadrant operation. If the V
X
input is a negative going signal
the V
X+
pin maybe grounded and the V
X-
pin used as the
control input.
The V
Y-
terminal is usually grounded allowing the V
Y+
to
swing
±
5V. The V
Z+
terminal is usually connected directly to
V
OUT
to complete the feedback loop of the output amplifier
while V
Z-
is grounded. The scale factor is normally set to 2
by connecting GA B to GA C. Therefore the transfer equation
simplifies to V
OUT
= (V
X
V
Y
) / 2.
Offset Adjustment
The signal channel offset voltage may be nulled by using a
20k
potentiometer between V
YIO
Adjust pins A and B and
connecting the wiper to V-. Reducing the signal channel
offset will reduce V
X
AC feedthrough. Output offset voltage
can also be nulled by connecting V
Z-
to the wiper of a 20k
potentiometer which is tied between V+ and V-.
Capacitive Drive Capability
When driving capacitive loads >20pF, a 50
resistor is
recommended between V
OUT
and V
Z+
, using V
Z+
as the
output (see Figure 2). This will prevent the multiplier from going
unstable.
Power Supply Decoupling
Power supply decoupling is essential for high frequency
circuits. A 0.01
μ
F high quality ceramic capacitor at each
supply pin in parallel with a 1
μ
F tantalum capacitor will
provide excellent decoupling. Chip capacitors produce the
best results due to the close spacing with which they may be
placed to the supply pins minimizing lead inductance.
Adjusting Scale Factor
Adjusting the scale factor will tailor the control signal, V
X
,
input voltage range to match your needs. Referring to the
simplified schematic on the front page and looking for the V
X
input stage, you will notice the unusual design. The internal
reference sets up a 1.2mA current sink for the V
X
differential
pair. The control signal applied to this input will be forced
across the scale factor setting resistor and set the current
flowing in the V
X+
side of the differential pair. When the
V
OUT
= A
(V
X+
- V
X-
) (V
Y+
- V
Y-
)
SF
- (V
Z+
- V
Z-
)
where;
A = Output Amplifier Open Loop Gain
SF = Scale Factor
V
X
, V
Y
, V
Z
= Differential Inputs
SF = 2, when GA B is shorted to GA C
SF
1.2 R
EXT
,
when R
EXT
is connected between
GA A and GA C (R
EXT
is in k
)
SF
1.2 (R
EXT
+ 1.667k
), when R
EXT
is
connected to GA B and GA C (R
EXT
is in k
)
V
OUT
=
(V
X+
- V
X-
) (V
Y+
- V
Y-
)
2
+ V
Z-
, when V
X
≥
0V
0
, when V
X
< 0V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
REF
NC
NC
V
Y
+
V-
V
OUT
V+
V
X
+
NC
X
Z
Y
Σ
+
-
+
-
+
-
+
-
NC
50
1k
50pF
FIGURE 2.
HA-2546
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA3-2546-5 | 30MHz, Voltage Output, Two Quadrant Analog Multiplier |
| HA-2546 | 30MHz, Voltage Output, Two Quadrant Analog Multiplier |
| HA1-2547-5 | 100MHz, Two Quadrant, Current Output, Analog Multiplier |
| HA1-2547-9 | 100MHz, Two Quadrant, Current Output, Analog Multiplier |
| HA-2547 | 100MHz, Two Quadrant, Current Output, Analog Multiplier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA9P2548-5 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:150MHz, High Slew Rate, Precision Operational Amplifier |
| HA9P2556-9 | 功能描述:IC MUX ANALOG 57MHZ MONO 16-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 模擬乘法器，除法器 系列:- 標(biāo)準(zhǔn)包裝:25 系列:HA 功能:模擬乘法器 位元/級數(shù):四象限 封裝/外殼:16-CDIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-CDIP 側(cè)面銅焊 包裝:管件 |
| HA9P2556-9Z | 功能描述:隔離放大器 W/ANNEAL MULT 4-QDRA V-OUT ANALOG 16W IND RoHS:否 制造商:Texas Instruments 輸入補(bǔ)償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HA9P2605-5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HA9P2605-5 WAF | 制造商:Harris Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。