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參數資料
| 型號： | MAX4222ESD+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 2/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BUFFER CLOSED-LOOP R-R 14SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 放大器類型： | 緩沖器 |
| 電路數： | 4 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 600 V/µs |
| -3db帶寬： | 200MHz |
| 電流 - 輸入偏壓： | 5.4µA |
| 電壓 - 輸入偏移： | 4000µV |
| 電流 - 電源： | 5.5mA |
| 電流 - 輸出 / 通道： | 120mA |
| 電壓 - 電源，單路/雙路(±)： | 3.15 V ~ 11 V，±1.575 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 14-SOIC |
| 包裝： | 管件 |
| 產品目錄頁面： | 1388 (CN2011-ZH PDF) |
MAX4214/MAX4215/MAX4217/MAX4219/MAX4222
As the load resistance decreases, the useful input range
is effectively limited by the output drive capability, since
the buffers have a fixed voltage gain of 2V/V or -1V/V.
For example, a 50
load can typically be driven from
40mV above VEE to 1.6V below VCC, or 40mV to 3.4V
when operating from a single 5V supply. If the buffer is
operated in the noninverting, gain of 2V/V configuration
with the inverting input grounded, the useful input volt-
age range becomes 20mV to 1.7V instead of the
-100mV to 2.75V indicated by the Electrical Character-
istics. Beyond the useful input range, the buffer output
is a nonlinear function of the input, but it will not under-
go phase reversal or latchup.
Enable
The MAX4215/MAX4219 have an enable feature (EN_)
that allows the buffer to be placed in a low-power state.
When the buffers are disabled, the supply current is
reduced to 400A per buffer.
As the voltage at the EN_ pin approaches the negative
supply rail, the EN_ input current rises. Figure 2 shows
a graph of EN_ input current versus EN_ pin voltage.
Figure 3 shows the addition of an optional resistor in
series with the EN pin, to limit the magnitude of the cur-
rent increase. Figure 4 displays the resulting EN pin
input current to voltage relationship.
Disabled Output Resistance
The MAX4214/MAX4215/MAX4217/MAX4219/MAX4222
include internal protection circuitry that prevents dam-
age to the precision input stage from large differential
input voltages (Figure 5). This protection circuitry con-
sists of five back-to-back Schottky diodes between
IN_+ and IN_-. These diodes reduce the disabled out-
put resistance from 1k
to 500 when the output volt-
age is 3V greater or less than the voltage at IN_+.
Under these conditions, the input protection diodes will
be forward biased, lowering the disabled output resis-
tance to 500
.
Output Capacitive Loading and Stability
The MAX4214 family provides maximum AC perfor-
mance with no load capacitance. This is the case when
the load is a properly terminated transmission line.
These devices are designed to drive up to 20pF of load
capacitance without oscillating, but AC performance
will be reduced under these conditions.
High-Speed, Single-Supply, Gain of 2,
Closed-Loop, Rail-to-Rail Buffers with Enable
10
______________________________________________________________________________________
20
-160
0
100
300
500
-100
-120
0
VIL (mV ABOVE VEE)
INPUT
CURRENT
(
A)
200
400
-60
-140
-20
-40
-80
Figure 2. Enable Logic-Low Input Current vs. Enable Logic-
Low Threshold
OUT
IN-
EN_
IN+
10k
ENABLE
500
500
MAX42_ _
Figure 3. Circuit to Reduce Enable Logic-Low Input Current
0
-10
0
100
300
500
-7
-8
-1
VIL (mV ABOVE VEE)
INPUT
CURRENT
(
A)
200
400
-3
-5
-9
-2
-4
-6
Figure 4. Enable Logic-Low Input Current vs. Enable Logic-
Low Threshold with 10k
Series Resistor
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX4222ESD+ | 功能描述:高速運算放大器 Closed-Loop Rail-Rail Buffer RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4222ESD+T | 功能描述:高速運算放大器 Closed-Loop Rail-Rail Buffer RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4222ESD-T | 功能描述:高速運算放大器 RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4223ESA | 功能描述:高速運算放大器 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4223ESA+ | 功能描述:高速運算放大器 1GHz Current Feedback Amp RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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