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參數(shù)資料
| 型號(hào)： | OPA634N |
| 英文描述： | ECONOLINE: RB & RA - Dual Output from a Single Input Rail- Power Sharing on Output- Industry Standard Pinout- 1kVDC & 2kVDC Isolation- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 85% |
| 中文描述： | 寬帶，單電源運(yùn)算放大器 |
| 文件頁(yè)數(shù)： | 17/17頁(yè) |
| 文件大?。?/td> | 179K |
| 代理商： | OPA634N |
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OPA634, OPA635
this total effective impedance should be set to match the
trace impedance. If the 6dB attenuation of a doubly termi-
nated transmission line is unacceptable, a long trace can be
series-terminated at the source end only. Treat the trace as a
capacitive load in this case and set the series resistor value
as shown in the plot of Recommended R
S
vs Capacitive
Load. This will not preserve signal integrity as well as a
doubly terminated line. If the input impedance of the desti-
nation device is low, there will be some signal attenuation
due to the voltage divider formed by the series output into
the terminating impedance.
e) Socketing a high speed part is not recommended.
The
additional lead length and pin-to-pin capacitance introduced
by the socket can create an extremely troublesome parasitic
network which can make it almost impossible to achieve a
smooth, stable frequency response. Best results are obtained
by soldering the OPA634 and OPA635 onto the board. If
socketing for the DIP package is desired, high frequency
flush mount pins (e.g., McKenzie Technology #710C) can
give good results.
INPUT AND ESD PROTECTION
The OPA634 and OPA635 are is built using a very high
speed complementary bipolar process. The internal junction
breakdown voltages are relatively low for these very small
geometry devices. These breakdowns are reflected in the
Absolute Maximum Ratings table. All device pins are pro-
tected with internal ESD protection diodes to the power
supplies as shown in Figure 8.
These diodes provide moderate protection to input overdrive
voltages above the supplies as well. The protection diodes
can typically support 30mA continuous current. Where higher
currents are possible (e.g., in systems with
±
15V supply
parts driving into the OPA634 and OPA635), current-limit-
ing series resistors should be added into the two inputs. Keep
these resistor values as low as possible since high values
degrade both noise performance and frequency response.
External
Pin
+V
CC
–V
CC
Internal
Circuitry
FIGURE 8. Internal ESD Protection.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA634U | Wideband, Single Supply OPERATIONAL AMPLIFIERS |
| OPA635N | Wideband, Single Supply OPERATIONAL AMPLIFIERS |
| OPA635U | Wideband, Single Supply OPERATIONAL AMPLIFIERS |
| OPA634 | Wideband, Single Supply OPERATIONAL AMPLIFIERS |
| OPA637AM | Precision High-Speed Difet OPERATIONAL AMPLIFIERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA634N/250 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| OPA634N/3K | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| OPA634U | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| OPA634U/2K5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OPA635 | 制造商:BB 制造商全稱:BB 功能描述:Wideband, Single Supply OPERATIONAL AMPLIFIERS |
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