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參數(shù)資料
| 型號(hào)： | MAT04EY |
| 廠商： | PRECISION MONOLITHICS INC |
| 元件分類： | 小信號(hào)晶體管 |
| 英文描述： | Matched Monolithic Quad Transistor |
| 中文描述： | 30 mA, 40 V, 4 CHANNEL, NPN, Si, SMALL SIGNAL TRANSISTOR |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 860K |
| 代理商： | MAT04EY |
REV. D
MAT04
–8–
Figure 5. Vector Summer
LOW NOISE, HIGH SPEED INSTRUMENTATION
AMPLIFIER
The circuit of Figure 6 is a very low noise, high speed amplifier,
ideal for use in precision transducer and professional audio
applications. The performance of the amplifier is summarized in
Table I. Figure 7 shows the input referred spot noise over the
0
–
25 kHz bandwidth to be flat at 1.2 nV/
√
Hz
. Figure 20 high-
lights the low 1/f noise corner at 2 Hz.
The circuit uses a high speed op amp, the OP17, preceded by
an input amplifier. This consists of a precision dual matched-
transistor, the MAT02, and a feedback V-to-I converter, the
MAT04. The arrangement of the MAT04 is known as a
“
linear-
ized cross quad
”
which performs the voltage-to-current conversion.
The OP17 acts as an overall nulling amplifier to complete the
feedback loop. Resistors R1, R2, and R3, R4 form voltage divid-
ers that attenuate the output voltage swing since the
“
cross
quad
”
arrangement has a limited input range. Biasing for the in-
put stage is set by Zener diode Z1. At low currents, the effective
zener voltage is about 3.3 V due to the soft knee characteristic of
the Zener diode. This results in a bias current of 530
μ
A per
side for the input stage. The gain of this amplifier with the val-
ues shown in Figure 6 is:
V
V
R
OUT
IN
G
=
33000
Table I. Instrumentation Amplifier Characteristics
Input Noise
Voltage Density
G = 1000
G = 100
G = 10
1.2 nV/
√
Hz
3.6 nV/
√
Hz
30 nV/
√
Hz
Bandwidth
G = 500
G = 100
G = 10
400 kHz
1 MHz
1.2 MHz
Slew Rate
40 V/
μ
s
Common-Mode Rejection G = 1000
130 dB
Distortion
G = 100
f = 20 Hz to 20 kHz
0.03%
Settling Time
G = 1000
10
μ
s
Power Consumption
350 mW
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAT-04EY | 制造商:AD 制造商全稱:Analog Devices 功能描述:Matched Monolithic Quad Transistor |
| MAT04F | 制造商:Analog Devices 功能描述: |
| MAT-04F | 制造商:AD 制造商全稱:Analog Devices 功能描述:Matched Monolithic Quad Transistor |
| MAT04FP | 制造商:Analog Devices 功能描述:IC TRANSISTOR MATCHED MONO |
| MAT-04FP | 制造商:AD 制造商全稱:Analog Devices 功能描述:Matched Monolithic Quad Transistor |
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