FN7177.2 March 31, 2011 where: TJMAX = Maximum junction temperature
參數(shù)資料
型號(hào)： EL5146CSZ-T13
廠商： Intersil
文件頁(yè)數(shù)： 10/24頁(yè)
文件大小： 0K
描述： IC AMP VFA SGL 100MHZ R-R 8-SOIC
標(biāo)準(zhǔn)包裝： 2,500
放大器類(lèi)型： 電壓反饋
電路數(shù)： 1
輸出類(lèi)型： 滿擺幅
轉(zhuǎn)換速率： 200 V/µs
增益帶寬積： 60MHz
-3db帶寬： 100MHz
電流 - 輸入偏壓： 2nA
電壓 - 輸入偏移： 15000µV
電流 - 電源： 7mA
電流 - 輸出 / 通道： 120mA
電壓 - 電源，單路/雙路(±)： 4.75 V ~ 5.25 V，±2.38 V ~ 2.63 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)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： 帶卷 (TR)
18
FN7177.2
March 31, 2011
where:
TJMAX = Maximum junction temperature
TAMAX = Maximum ambient temperature
θJA = Thermal resistance of the package
PDMAX = Maximum power dissipation in the package
The maximum power dissipation actually produced by an IC
is the total quiescent supply current times the total power
supply voltage, plus the power in the IC due to the load, or
as expressed in Equation 2:
where:
N = Number of amplifiers in the package
VS = Total supply voltage
ISMAX = Maximum supply current per amplifier
VOUT = Maximum output voltage of the application
RL = Load resistance tied to ground
If we set the two PDMAX equations equal to each other, we
can solve for RL using Equation 3:
Assuming worst case conditions of TA = +85°C, VOUT =VS/2V,
VS = 5.5V, and ISMAX = 8.8mA per amplifier, following is a table
of all packages and the minimum RL allowed.
EL5144 Series Comparator Application
The EL5144 series amplifier can be used as a very fast,
single supply comparator. Most op amps used as a
comparator allow only slow speed operation because of
output saturation issues. The EL5144 series amplifier
doesn’t suffer from output saturation issues. Figure 50
shows the amplifier implemented as a comparator. Figure 51
is a graph of propagation delay vs overdrive as a square
wave is presented at the input of the comparator.
Multiplexing with the EL5144 Series Amplifier
Besides normal power-down usage, the CE pin on the
EL5146 and EL5246 series amplifiers also allow for
multiplexing applications. Figure 52 shows an EL5246 with
its outputs tied together, driving a back terminated 75
Ω video
load. A 3VP-P 10MHz sine wave is applied at Amp A input,
and a 2.4VP-P 5MHz square wave to Amp B. Figure 53
shows the SELECT signal that is applied, and the resulting
output waveform at VOUT. Observe the break-before-make
operation of the multiplexing. Amp A is on and VIN1 is being
passed through to the output of the amplifier. Then Amp A
turns off in about 10ns. The output decays to ground with an
RLCL time constants. 500ns later, Amp B turns on and VIN2
is passed through to the output. This break-before-make
operation ensures that more than one amplifier isn’t trying to
drive the bus at the same time. Notice the outputs are tied
directly together. Isolation resistors at each output are not
necessary.
PART
PACKAGE
MINIMUM RL
EL5144CW
SOT23-5
37
EL5146CS
SOIC-8
21
EL5146CN
PDIP-8
14
EL5244CS
SOIC-8
48
EL5244CN
PDIP-8
30
EL5244CY
MSOP-8
69
EL5246CY
MSOP-10
69
EL5246CS
SOIC-14
34
EL5246CN
PDIP-14
23
EL5444CU
QSOP-16
139
EL5444CS
SOIC-14
85
EL5444CN
PDIP-14
51
PDMAX
NVS ISMAX VS
(
- VOUT)
VOUT
RL
----------------
×
+
×
=
(EQ. 2)
RL
VOUT VS - VOUT
()
×
TJMAX - TAMAX
N
θ
JA
×
---------------------------------------------
- VS ISMAX
×
()
----------------------------------------------------------------------------------------------
=
(EQ. 3)
1
2
3
4
8
7
6
5
+
–
-
+
EL5146
+5V
VIN
+2.5V
VOUT
RL
0.1F
FIGURE 50. EL5146 AMPLIFIER IMPLEMENTED AS A
COMPARATOR
0.01
0.1
1.0
10
100
1000
PROP
AGA
T
ION
D
E
LA
Y
(ns)
OVERDRIVE (V)
POSITIVE GOING
SIGNAL
NEGATIVE GOING
SIGNAL
FIGURE 51. PROPAGATION DELAY vs OVERDRIVE FOR
AMPLIFIER USED AS A COMPARATOR
EL5144, EL5146, EL5244, EL5246, EL5444
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EL5146CSZ-T7 功能描述:IC AMP VFA R-R SGL 100MHZ 8-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:通用 電路數(shù):2 輸出類(lèi)型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)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:管件
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