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參數(shù)資料
| 型號(hào)： | EL5132ISZ-T7 |
| 廠商： | Intersil |
| 文件頁數(shù)： | 2/13頁 |
| 文件大小： | 0K |
| 描述： | IC VFA 670MHZ ULT LO VOLT 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 1000 V/µs |
| 增益帶寬積： | 3GHz |
| -3db帶寬： | 670MHz |
| 電流 - 輸入偏壓： | 12µA |
| 電壓 - 輸入偏移： | 500µV |
| 電流 - 電源： | 11mA |
| 電流 - 輸出 / 通道： | 140mA |
| 電壓 - 電源，單路/雙路(±)： | 5 V ~ 12 V，±2.5 V ~ 6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | EL5132ISZ-T7DKR |
10
FN7382.8
May 4, 2007
Applications Information
Product Description
The EL5132, EL5133 is a voltage feedback operational
amplifier designed for communication and imaging
applications requiring very low voltage and current noise. It
also features low distortion while drawing moderately low
supply current and is built on Intersil's proprietary high-speed
complementary bipolar process. The EL5132, EL5133 uses
a classical voltage-feedback topology which allows them to
be used in a variety of applications where current-feedback
amplifiers are not appropriate because of restrictions placed
upon the feedback element used with the amplifier.
Gain-Bandwidth Product and the -3dB Bandwidth
The EL5132, EL5133 has a gain-bandwidth product of
3000MHz while using only 11mA of supply current. For gains
greater than 10, their closed-loop -3dB bandwidth is
approximately equal to the gain-bandwidth product divided
by the noise gain of the circuit. For gains of 10, higher-order
poles in the amplifiers' transfer function contribute to even
higher closed loop bandwidths. For example, the EL5132,
EL5133 have a -3dB bandwidth of 670MHz at a gain of 10,
dropping to 150MHz at a gain of 30. It is important to note
that the EL5132, EL5133 is designed so that this “extra”
bandwidth in low-gain application does not come at the
expense of stability. As seen in the typical performance
curves, the EL5132, EL5133 in a gain of only 10 exhibited
0.5dB of peaking with a 500
Ω load.
Output Drive Capability
The EL5132 and EL5133 are is designed to drive a low
impedance load. It can easily drive 6VP-P signal into a 500Ω
load. This high output drive capability makes the EL5132,
EL5133 an ideal choice for RF, IF, and video applications.
Furthermore, the EL5132, EL5133 is current-limited at the
output, allowing it to withstand momentary short to ground.
However, the power dissipation with output-shorted cannot
exceed the power dissipation capability of the package.
Driving Cables and Capacitive Loads
Although the EL5132, EL5133 is designed to drive low
impedance load, capacitive loads will decreases the
amplifier's phase margin. As shown in the performance
curves, capacitive load can result in peaking, overshoot and
possible oscillation. For optimum AC performance,
capacitive loads should be reduced as much as possible or
isolated with a series resistor between 5
Ω to 20Ω. When
driving coaxial cables, double termination is always
recommended for reflection-free performance. When
properly terminated, the capacitance of the coaxial cable will
not add to the capacitive load seen by the amplifier.
Disable/Power-Down
The EL5132 amplifier can be disabled placing its output in a
high impedance state. When disable, the amplifier current is
reduced to 12A. The EL5132 is disabled when it CE pin is
pulled up to within 1V of the power supply. Similarly, the
amplifier is enabled by floating or pulling its CE pin to at least
3V below the positive supply. For ±5V supply, this means
that an EL5132 amplifier will be enabled when CE is 2V or
FIGURE 35. DIFFERENTIAL GAIN (%)
FIGURE 36. DIFFERENTIAL PHASE (°)
Typical Performance Curves (Continued)
0.2
0
010
0.1
-0.05
0.0
-0.15
-0.20
20
30
40
50
60
70
80
90
100
DI
FFE
RE
NTIAL
GA
IN
(%
)
0.20
0
010
0.15
-0.05
0.05
-0.15
-0.20
20
30
40
50
60
70
80
90
100
DIF
F
ERE
N
T
IAL
P
HASE
(°)
EL5132, EL5133
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