- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385856 > SP8025 200V/us Integrated APC Amplifier with Gain Adjust & Differential Output PDF資料下載
參數(shù)資料
| 型號(hào)： | SP8025 |
| 英文描述： | 200V/us Integrated APC Amplifier with Gain Adjust & Differential Output |
| 中文描述： | 200V/us綜合apc的放大器增益調(diào)整 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大小： | 93K |
| 代理商： | SP8025 |
3
Rev. 6/02/03
SP8024, 25, 26 200V/
μ
s Integrated APC Amplifier
Copyright 2003 Sipex Corporation
PIN DESCRIPTION
PIN NUMBER
NAME
FUNCTION
1
V
CC
Supply Voltage
2
GAIN
Gain Select
3
R
COM
Common connection point for R
GAIN
1 and R
GAIN
2
4
GND
Power Ground
5
R
GAIN1
Gain Adjust 1
6
R
GAIN2
Gain Adjust 2
7
V
OUT
-
Output Voltage -
8
V
OUT
+
Output Voltage +
Internal Operation
The SP8024/25/26 APC circuits have an inte-
grated photo detector and are designed with
three nominal sensitivities of 1mV/
μ
W, 2mV/
μ
W and 3mV/
μ
W respectively. Each part’s sen-
sitivity can also be adjusted continuously and
independently for two different gain modes via
two external resistors over a range of 12dB. The
two gain modes are controlled by a TTL com-
patible logic input. This logic input also normal-
izes the internal photo detector’s responsivity
for 650nm and 780nm laser wavelengths. The
logic pin selects between the two external gain
setting resistors to allow independent control
and settings for the two gain functions.
The 8024 APC family uses two stages of gain to
optimize for speed and offset. The two stages
consist of a differential trans-impedance ampli-
fier (TIA), and a differential gain adjust ampli-
fier.
TIA
The first stage is a differential trans-impedance
amplifier (TIA) for converting the photo detec-
tor output current to a balanced differential
voltage. This topology allows for fast settling of
the photo detector and also cancels offset ef-
fects. The TIA has no external components.
Variable Gain Amplifier
This stage is used to vary the gain of the system.
It provides selection for two different gain set-
ting resistors, R
GAIN1
and R
GAIN2
, at pins 5 and
6 via internal MOSFET switches S1 and S2. The
logic input at pin 2 controls the selection of the
two external gain set resistors.
Table 1: Gain Select Logic Truth Table
Gain
Select
Pin 2
Sensitivity
(mV/
μ
W)
R
G1
= R
G2
= 262
SP8024
SP8025
Rexternal,
Pin 3 to:
Gain
Factor (x)
SP8026
0 or Open
R
G1
- Pin 5
6.25
1
2
3
1
R
G2
- Pin 6
6.25
1
2
3
The gain of this balanced amplifier topology is
given by:
GAIN = 1 + Rf1 + Rf2
R
EXT
where R
GAIN
is external and Rf1 = Rf2 = 850
in feedback.
The nominal gain is defined as 6.25.
THEORY OF OPERATION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP8026 | 200V/us Integrated APC Amplifier with Gain Adjust & Differential Output |
| SP8062 | High Speed 10-channel Photo Detector IC |
| SP8062DG | High Speed 10-channel Photo Detector IC |
| SP8107 | Three Channel High Performance Laser Driver |
| SP8110 | Two-Channel Modulation IC for Laser Diode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP802512H-03 | 制造商:BISONIC 功能描述:FAN 80MM SLIMLINE 12VDC |
| SP802512H-03-W | 制造商:BISONIC 功能描述:FAN SLIMLINE 80MM 12VDC 制造商:BISONIC 功能描述:FAN, SLIMLINE, 80MM, 12VDC 制造商:BISONIC 功能描述:AXIAL FAN, 80MM, 12VDC, 300mA; Frame Dimensions:80mm x 80mm x 25mm; Supply Voltage:12VDC; Current Rating:300mA; Flow Rate - Imperial:44cu.ft/min; Flow Rate - Metric:1.25m /min; Noise Rating:35.6dBA; Bearing Type:Sleeve ;RoHS Compliant: Yes |
| SP802512L-03 | 制造商:BISONIC 功能描述:FAN 80X25MM 12VDC 制造商:BISONIC 功能描述:FAN, 80X25MM, 12VDC 制造商:BISONIC 功能描述:FAN, 80X25MM, 12VDC; Frame Dimensions:80mm x 80mm x 25mm; Supply Voltage:12VDC; Current Rating:150mA; Flow Rate - Imperial:30cu.ft/min; Flow Rate - Metric:0.85m3/min; Noise Rating:23.7dBA; Bearing Type:Sleeve; Power Connection ;RoHS Compliant: Yes |
| SP802512M-02 W-G | 功能描述:風(fēng)扇 12V FAN 80x25mm SLV RoHS:否 制造商:Sanyo Denki 產(chǎn)品:Fans 電流類型: 電源電壓:48 V 氣流:636 CFM 軸承類型: 噪聲:83 dBA 速度:6400 RPM 功率額定值:264 W 框架尺寸 (mm):172 mm x 150 mm x 102 mm 外殼材料:Aluminum 端接類型:Wire 系列: |
| SP802524H-03 | 制造商:Bi-Sonic Technology 功能描述:FAN 80MM SLIMLINE 24VDC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。