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參數(shù)資料
| 型號(hào)： | EL5177IY-T13 |
| 廠商： | Intersil |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DRIVER TWISTED 550MHZ 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 差分 |
| 電路數(shù)： | 1 |
| 輸出類型： | 差分 |
| 轉(zhuǎn)換速率： | 1100 V/µs |
| 增益帶寬積： | 200MHz |
| -3db帶寬： | 550MHz |
| 電流 - 輸入偏壓： | 14µA |
| 電壓 - 輸入偏移： | 1400µV |
| 電流 - 電源： | 12.5mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | 4.75 V ~ 11 V，±2.38 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
EL5177
9
FN7344.6
August 28, 2012
Simplified Schematic
Description of Operation and
Application Information
Product Description
The EL5177 is a wide bandwidth, low power and
single/differential ended to differential output amplifier. It can
be used as single/differential ended to differential converter.
The EL5177 is internally compensated for closed loop gain of
+1 or greater. Connected in gain of 1 and driving a 1k
Ω
differential load, the EL5177 has a -3dB bandwidth of
550MHz. Driving a 200
Ω differential load at gain of 2, the
bandwidth is about 130MHz. The EL5177 is available with a
power-down feature to reduce the power while the amplifier is
disabled.
Input, Output, and Supply Voltage Range
The EL5177 has been designed to operate with a single supply
voltage of 5V to 10V or a split supplies with its total voltage
from 5V to 10V. The amplifiers have an input common mode
voltage range from -4.3V to 3.4V for ±5V supply. The
differential mode input range (DMIR) between the two inputs
is from -2.3V to +2.3V. The input voltage range at the REF pin is
from -3.3V to 3.7V. If the input common mode or differential
mode signal is outside the above-specified ranges, it will cause
the output signal to become distorted.
The output of the EL5177 can swing from -3.8V to +3.8V at a
1k
Ω differential load at ±5V supply. As the load resistance
becomes lower, the output swing is reduced.
Differential and Common Mode Gain
Settings
The voltage applied at REF pin can set the output common
mode voltage and the gain is one. The differential gain is set
by the RF and RG network.
The gain setting for EL5177 is expressed in Equation 1:
Where:
RF1 = RF2 = RF
FIGURE 23.
Choice of Feedback Resistor and Gain
Bandwidth Product
For applications that require a gain of +1, no feedback resistor is
required. Just short the OUT+ pin to FBP pin and OUT- pin to FBN
pin. For gains greater than +1, the feedback resistor forms a pole
with the parasitic capacitance at the inverting input. As this pole
becomes smaller, the amplifier's phase margin is reduced. This
causes ringing in the time domain and peaking in the frequency
domain. Therefore, RF has some maximum value that should not
be exceeded for optimum performance. If a large value of RF
must be used, a small capacitor in the few Pico farad range in
parallel with RF can help to reduce the ringing and peaking at the
expense of reducing the bandwidth.
REF
R10
R9
RCD
OUT+
OUT-
CC
R6
R5
CC
R4
R3
R7
R8
R2
R1
VB1
FBN
FBP
IN-
IN+
VB2
VS+
VS-
V
ODM
V
IN
(
+V
IN- )
1
R
F1
R
F2
+
R
G
----------------------------
+
×
–
=
V
ODM
V
IN
(
+V
IN- )
1
2R
F
R
G
-----------
+
×
–
=
V
OCM
V
REF
=
(EQ. 1)
VO+
FBP
RG
RF2
IN+
IN-
REF
FBN
VIN+
VIN-
VREF
RF1
VO-
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