- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄5909 > OP27GJZ (Analog Devices Inc)IC OPAMP GP 8MHZ LN PREC TO99-8 PDF資料下載
參數(shù)資料
| 型號(hào)： | OP27GJZ |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 8/20頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP GP 8MHZ LN PREC TO99-8 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 2.8 V/µs |
| 增益帶寬積： | 8MHz |
| 電流 - 輸入偏壓： | 15nA |
| 電壓 - 輸入偏移： | 30µV |
| 電壓 - 電源，單路/雙路(±)： | ±4 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | TO-99-8 金屬罐 |
| 供應(yīng)商設(shè)備封裝： | TO-99-8 |
| 包裝： | 管件 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)當(dāng)前第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)
OP27
Rev. F | Page 16 of 20
For reference, typical source resistances of some signal sources
are listed in Table 7.
Table 7.
Device
Source
Impedance
Comments
Strain Gauge
<500 Ω
Typically used in low frequency
applications.
Magnetic
Tape Head
<1500 Ω
Low is very important to reduce
self-magnetization problems
when direct coupling is used.
OP27 IB can be neglected.
Magnetic
Phonograph
Cartridges
<1500 Ω
Similar need for low IB in direct
coupled applications. OP27 does
not introduce any self-
magnetization problems.
Linear
Variable
Differential
Transformer
<1500 Ω
Used in rugged servo-feedback
applications. Bandwidth of
interest is 400 Hz to 5 kHz.
Table 8. Open-Loop Gain
Frequency
OP27
@ 3 Hz
100 dB
124 dB
125 dB
@ 10 Hz
100 dB
120 dB
125 dB
@ 30 Hz
90 dB
110 dB
124 dB
AUDIO APPLICATIONS
Figure 41 is an example of a phono pre-amplifier circuit using the
OP27 for A1; R1-R2-C1-C2 form a very accurate RIAA network
with standard component values. The popular method to
accomplish RIAA phono equalization is to employ frequency
dependent feedback around a high quality gain block. Properly
chosen, an RC network can provide the three necessary time
constants of 3180 μs, 318 μs, and 75 μs.
For initial equalization accuracy and stability, precision metal
film resistors and film capacitors of polystyrene or polypro-
pylene are recommended because they have low voltage
coefficients, dissipation factors, and dielectric absorption.
(high-k ceramic capacitors should be avoided here, though
low-k ceramics, such as NPO types that have excellent
dissipation factors and somewhat lower dielectric absorption,
can be considered for small values.)
CA
150pF
A1
OP27
RA
47.5k
MOVING MAGNET
CARTRIDGE INPUT
++
C4 (2)
220F
C1
0.03F
C2
0.01F
C3
0.47F
LF ROLLOFF
OUT
IN
OUTPUT
R5
100k
R4
75k
R1
97.6k
R2
7.87k
R3
100
G = 1kHz GAIN
= 0.101 ( 1 +
)
R1
R3
= 98.677 (39.9dB) AS SHOWN
2
6
3
003
17
-041
Figure 41. Phono Preamplifier Circuit
The OP27 brings a 3.2 nV/√Hz voltage noise and 0.45 pA/√Hz
current noise to this circuit. To minimize noise from other
sources, R3 is set to a value of 100 Ω, generating a voltage noise
of 1.3 nV/√Hz. The noise increases the 3.2 nV/√Hz of the
amplifier by only 0.7 dB. With a 1 kΩ source, the circuit noise
measures 63 dB below a 1 mV reference level, unweighted, in a
20 kHz noise bandwidth.
Gain (G) of the circuit at 1 kHz can be calculated by the
expression:
+
=
R3
R1
G
1
101
.
0
For the values shown, the gain is just under 100 (or 40 dB).
Lower gains can be accommodated by increasing R3, but gains
higher than 40 dB show more equalization errors because of the
8 MHz gain bandwidth of the OP27.
This circuit is capable of very low distortion over its entire
range, generally below 0.01% at levels up to 7 V rms. At 3 V
output levels, it produces less than 0.03% total harmonic
distortion at frequencies up to 20 kHz.
Capacitor C3 and Resistor R4 form a simple 6 dB per octave
rumble filter, with a corner at 22 Hz. As an option, the switch
selected Shunt Capacitor C4, a nonpolarized electrolytic,
bypasses the low frequency roll-off. Placing the rumble filter’s
high-pass action after the preamplifier has the desirable result
of discriminating against the RIAA-amplified low frequency
noise components and pickup produced low frequency
disturbances.
A preamplifier for NAB tape playback is similar to an RIAA
phono preamplifier, though more gain is typically demanded,
along with equalization requiring a heavy low frequency boost.
The circuit in Figure 41 can be readily modified for tape use, as
shown by Figure 42.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PBC29DAFN | CONN HEADER .100 DUAL STR 58POS |
| 929667-02-05-I | CONN HEADER .100 DUAL R/A 10POS |
| C22G50 | FUSE INDUST 50A 690V CLASS GG |
| 0464004.DR | FUSE 4A 250V FAST NANO2 SMD |
| C22G40 | FUSE INDUST 40A 690V CLASS GG |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OP-27GL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OP27GN8 | 功能描述:IC OPAMP LOW NOISE HI-SPD 8-DIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:電流檢測(cè) 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:- 增益帶寬積:125kHz -3db帶寬:- 電流 - 輸入偏壓:- 電壓 - 輸入偏移:100µV 電流 - 電源:1.1µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-WFBGA，CSPBGA 供應(yīng)商設(shè)備封裝:4-UCSP（2x2） 包裝:剪切帶 (CT) 其它名稱:MAX9634WERS+TCT |
| OP-27GN8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Noise, High Speed Precision Operational Amplifiers |
| OP27GN8#PBF | 功能描述:IC OPAMP LOW NOISE HI-SPD 8-DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:電流檢測(cè) 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:- 增益帶寬積:125kHz -3db帶寬:- 電流 - 輸入偏壓:- 電壓 - 輸入偏移:100µV 電流 - 電源:1.1µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-WFBGA，CSPBGA 供應(yīng)商設(shè)備封裝:4-UCSP（2x2） 包裝:剪切帶 (CT) 其它名稱:MAX9634WERS+TCT |
| OP27GP | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。