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參數(shù)資料
| 型號： | HCPL-7840 |
| 元件分類： | 運動控制電子 |
| 英文描述： | Isolation Amplifier(隔離放大器) |
| 中文描述： | 隔離放大器（隔離放大器） |
| 文件頁數(shù)： | 8/19頁 |
| 文件大?。?/td> | 244K |
| 代理商： | HCPL-7840 |
8
Notes:
General Note: Typical values represent
the mean value of all characterization
units at the nominal operating conditions.
Typical drift specifications are determined
by calculating the rate of change of the
specified parameter versus the drift pa-
rameter (at nominal operating conditions)
for each characterization unit, and then
averaging the individual unit rates. The
corresponding drift figures are normalized
to the nominal operating conditions and
show how much drift occurs as the par-
ticular drift parameter is varied from its
nominal value, with all other parameters
held at their nominal operating values.
Note that the typical drift specifications
in the tables below may differ from the
slopes of the mean curves shown in the
corresponding figures.
1. Agilent recommends operation with
V
IN-
= 0 V (tied to GND1). Limiting
V
IN+
to 100 mV will improve DC
nonlinearity and nonlinearity drift. If
V
IN-
is brought above V
DD1
– 2 V, an
internal test mode may be activated.
This test mode is for testing LED
coupling and is not intended for
customer use.
2. This is the Absolute Value of Input
Offset Change vs. Temperature.
3. Gain is defined as the slope of the
best-fit line of differential output
voltage (V
OUT+
–V
OUT-
) vs. differential
input voltage (V
–V
IN-
) over the
specified input range.
4. This is the Absolute Value of Gain
Change vs. Temperature.
5. Nonlinearity is defined as half of the
peak-to-peak output deviation from
the best-fit gain line, expressed as a
percentage of the full-scale differential
output voltage.
6. NL
is the nonlinearity specified over
an input voltage range of
±
100 mV.
7. The input supply current decreases
as the differential input voltage
(V
IN+
–V
IN-
) decreases.
8. The maximum specified output supply
current occurs when the differential
input voltage (V
IN+
–V
IN-
) = -200 mV,
the maximum recommended operat-
ing input voltage. However, the out-
put supply current will continue to
rise for differential input voltages up
to approximately -300 mV, beyond
which the output supply current
remains constant.
9. Because of the switched-capacitor
nature of the input sigma-delta con-
verter, time-averaged values are shown.
10. When the differential input signal
exceeds approximately 308 mV, the
outputs will limit at the typical values
shown.
11. Short circuit current is the amount of
output current generated when either
output is shorted to V
DD2
or ground.
12. CMRR is defined as the ratio of the
differential signal gain (signal applied
differentially between pins 2 and 3)
to the common-mode gain (input pins
tied together and the signal applied
to both inputs at the same time),
expressed in dB.
13. Output noise comes from two primary
sources: chopper noise and sigma-
delta quantization noise. Chopper
noise results from chopper stabilization
of the output op-amps. It occurs at a
specific frequency (typically 400 kHz
at room temperature), and is not
attenuated by the internal output filter.
A filter circuit can be easily added to
the external post-amplifier to reduce
the total rms output noise. The
internal output filter does eliminate
most, but not all, of the sigma-delta
quantization noise. The magnitude of
the output quantization noise is very
small at lower frequencies (below
10 kHz) and increases with increasing
frequency.
14. CMTI (Common Mode Transient
Immunity or CMR, Common Mode
Rejection) is tested by applying an
exponentially rising/falling voltage
step on pin 4 (GND1) with respect to
pin 5 (GND2). The rise time of the
test waveform is set to approximately
50 ns. The amplitude of the step is
adjusted until the differential output
(V
OUT+
–V
OUT-
) exhibits more than a
200 mV deviation from the average
output voltage for more than 1
μ
s.
The HCPL-7840 will continue to func-
tion if more than 10 kV/
μ
s common
mode slopes are applied, as long as
the breakdown voltage limitations
are observed.
15. Data sheet value is the differential
amplitude of the transient at the
output of the HCPL-7840 when a
1 V
pk-pk
, 1 MHz square wave with
40 ns rise and fall times is applied to
both V
DD1
and V
DD2
.
16. In accordance with UL 1577, each
optocoupler is proof tested by
applying an insulation test voltage
≥
4200 Vrms for 1 second (leakage
detection current limit, I
≤
5
μ
A).
This test is performed before the
100% production test for partial
discharge (method b) shown in
VDE 0884 Insulation Characteristic
Table.
17. The Input-Output Momentary With-
stand Voltage is a dielectric voltage
rating that should not be interpreted
as an input-output continuous voltage
rating. For the continuous voltage
rating refer to the VDE 0884 insula-
tion characteristics table and your
equipment level safety specification.
18. This is a two-terminal measurement:
pins 1–4 are shorted together and
pins 5–8 are shorted together.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-7840#060 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#300 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#360 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#500 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#560 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
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