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參數(shù)資料
| 型號： | AD734AQ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MULTIPLIER/DIVIDER 14CDIP |
| 標(biāo)準(zhǔn)包裝： | 25 |
| 功能： | 模擬乘法器 |
| 位元/級數(shù)： | 四象限 |
| 封裝/外殼： | 14-CDIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 14-CERDIP |
| 包裝： | 管件 |
AD734
Rev. E | Page 17 of 20
The possible two-tone intermodulation products are at 2 ×
9.95 MHz 10.05 MHz ± 9.00 MHz and 2 × 10.05 9.95 MHz
± 9.00 MHz; of these, only the third-order products at 0.850 MHz
and 1.150 MHz are within the 10 MHz bandwidth of the AD734;
the desired output signals are at 0.950 MHz and 1.050 MHz.
Note that the difference between the desired outputs and third-
order products (see Figure 37) is approximately 78 dB, which
corresponds to a computed third-order intercept point of +46 dBm.
LOW DISTORTION MIXER
The AD734’s low noise and distortion make it especially suitable
for use as a mixer, modulator, or demodulator. Although the
AD734’s 3 dB bandwidth is typically 10 MHz and is established
by the output amplifier, the bandwidth of its X and Y interfaces
and the multiplier core are typically in excess of 40 MHz. Thus,
provided that the desired output signal is less than 10 MHz, as
is typically the case in demodulation, the AD734 can be used
with both its X and Y input signals as high as 40 MHz. One test
of mixer performance is to linearly combine two closely spaced,
equal-amplitude sinusoidal signals and then mix them with a
third signal to determine the mixer’s two-tone, third-order
intermodulation products.
CENTER 990 000.0Hz
RBW 1kHz
VBW 30Hz
SPAN 500 000.0Hz
ST 47.0sec
008
27-
020
REF – 10.0dBm
10dB/DIV
RANGE – 5.0dBm
MARKER 950 000.0Hz
– 15.8dBm
AD734
X1
1
X2
2
U0
3
U1
4
U2
5
VP 14
DD 13
W 12
Z1 11
Z2 10
Y2
7
ER 9
VN 8
Y1
6
+15V
OP177
–15V
0.1F
00
827
-019
2k
HP3326A
COMBINE
A + B
DATEL
DVC-8500
HP3326A
HIGH VOLTAGE
OPTION
HP3585A
WITH 10X PROBE
dBm REF TO 50
Figure 37. AD734 Third-Order Intermodulation Performance for f1 =
9.95 MHz, f2 = 10.05 MHz, and f0 = 9.00 MHz and for Signal Levels of f1 = f2 =
6 dBm and f0 = +24 dBm (All Displayed Signal Levels Are Attenuated 20 dB by
the 10X Probe Used to Measure the Mixer’s Output)
Figure 36. AD734 Mixer Test Circuit
Figure 36 shows a test circuit for measuring the AD734’s
performance in this regard. In this test, two signals, at 10.05 MHz
and 9.95 MHz, are summed and applied to the AD734 X
interface. A second 9 MHz signal is applied to the AD734 Y
interface. The voltage at the U interface is set to 2 V to use the
full dynamic range of the AD734; that is, by connecting the W
and Z1 pins together, grounding the Y2 and X2 pins, and setting
U = 2 V, the overall transfer function is
V
Y
X
W
2
1
=
(14)
CENTER 990 000.0Hz
RBW 1kHz
VBW 10Hz
SPAN 500 000.0Hz
ST 156sec
008
27-
021
REF – 10.0dBm
10dB/DIV
RANGE – 10.0dBm
MARKER 950 000.0Hz
– 21.8dBm
and W can be as high as 20 V p-p when X1 = 2 V p-p and Y1 =
10 V p-p. The 2 V p-p signal level corresponds to 10 dBm into a
50 Ω input termination resistor connected from X1 or Y1 to
ground.
If the two X1 inputs are at Frequency f1 and Frequency f2 and the
frequency at the Y1 input is f0, then the two-tone third-order
intermodulation products should appear at Frequency 2f1 – f2 ±
output spectra of the AD734 with f1 = 9.95 MHz, f2 = 10.05 MHz,
and f0 = 9.00 MHz for a signal level of f1 = f2 = 6 dBm and f0 =
Figure 38. This performance is without external trimming of
the AD734 X and Y input offset voltages.
Figure 38. AD734 Third-Order Intermodulation Performance for f1 =
9.95 MHz, f2 = 10.05 MHz, and f0 = 9.00 MHz and for Signal Levels of f1 = f2 =
0 dBm and f0 = +24 dBm (All Displayed Signal Levels Are Attenuated 20 dB by
the 10X Probe Used to Measure the Mixer’s Output)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD734AQ TUBE | 制造商:Analog Devices 功能描述:MULTIPLIER 4 QUAD 0.4% 10MHZ DIP14 |
| AD734BN | 功能描述:IC MULTIPLIER/DIVIDER 14-DIP 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 |
| AD734BNZ | 功能描述:IC MULT/DIV 4-QUADRANT 14-DIP RoHS:是 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 |
| AD734BQ | 功能描述:IC MULTIPLIER 4-QUADRANT 14-CDIP 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 |
| AD734SCHIPS | 制造商:AD 制造商全稱:Analog Devices 功能描述:10 MHz, 4-Quadrant Multiplier/Divider |
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