- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377845 > MAT03FH (ANALOG DEVICES INC) Low Noise, Matched Dual PNP Transistor PDF資料下載
參數(shù)資料
| 型號(hào)： | MAT03FH |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 小信號(hào)晶體管 |
| 英文描述： | Low Noise, Matched Dual PNP Transistor |
| 中文描述： | 20 mA, 36 V, 2 CHANNEL, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-78 |
| 封裝： | METAL CAN-6 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 254K |
| 代理商： | MAT03FH |
–8–
REV. B
MAT03
T his amplifier exhibits excellent full power ac performance,
0.08% T HD into a 600
load, making it suitable for exacting
audio applications (see Figure 14b).
Figure 14b. Super Low Noise Amplifier—Total
Harmonic Distortion
LOW NOISE MICROPHONE PRE AMPLIFIE R
Figure 15 shows a microphone preamplifier that consists of a
MAT 03 and a low noise op amp. T he input stage operates at a
relatively high quiescent current of 2 mA per side, which reduces
the MAT 03 transistor’s voltage noise. T he 1/ corner is less than
1 Hz. T otal harmonic distortion is under 0.005% for a 10 V p-p
signal from 20 Hz to 20 kHz. T he preamp gain is 100, but can be
modified by varying R
5
or R
6
(V
OUT
/V
IN
= R
5
/R
6
+ 1).
A total input stage emitter current of 4 mA is provided by Q
2
.
T he constant current in Q
2
is set by using the forward voltage of
a GaAsP LED as a reference. T he difference between this voltage
and the V
BE
of a silicon transistor is predictable and constant (to
a few percent) over a wide temperature range. T he voltage differ-
ence, approximately 1 V, is dropped across the 250
resistor
which produces a temperature stabilized emitter current.
CURRE NT SOURCE S
A fundamental requirement for accurate current mirrors and ac-
tive load stages is matched transistor components. Due to the
excellent V
BE
matching (the voltage difference between V
BE
’s
required to equalize collector current) and gain matching, the
MAT 03 can be used to implement a variety of standard current
mirrors that can source current into a load such as an amplifier
stage. T he advantages of current loads in amplifiers versus resis-
tors is an increase of voltage gain due to higher impedances,
larger signal range, and in many applications a wider signal
bandwidth.
Figure 16 illustrates a cascode current mirror consisting of two
MAT 03 transistor pairs.
T he cascode current source has a common base transistor in se-
ries with the output which causes an increase in output imped-
ance of the current source since V
CE
stays relatively constant.
High frequency characteristics are improved due to a reduction
of Miller capacitance. T he small-signal output impedance can
be determined by consulting “h
OF
vs. Collector Current” typical
graph. T ypical output impedance levels approach the perfor-
mance of a perfect current source.
Considering a typical collector current of 100
μ
A, we have:
ro
Q3
=
1
1.0
μ
MHOS
=
1
M
Figure 15. Low Noise Microphone Preamplifier
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAT04FY | Matched Monolithic Quad Transistor |
| MAT04 | Matched Monolithic Quad Transistor |
| MAT04EY | Matched Monolithic Quad Transistor |
| MAT04FP | Matched Monolithic Quad Transistor |
| MAT04FS | Matched Monolithic Quad Transistor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAT03FH | 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR |
| MAT03FHZ | 功能描述:IC TRANS DUAL MATCHED PNP TO78-6 RoHS:是 類別:分離式半導(dǎo)體產(chǎn)品 >> 晶體管(BJT) - 陣列 系列:- 標(biāo)準(zhǔn)包裝:10,000 系列:- 晶體管類型:2 NPN（雙） 電流 - 集電極 (Ic)（最大）:100mA 電壓 - 集電極發(fā)射極擊穿（最大）:45V Ib、Ic條件下的Vce飽和度（最大）:600mV @ 5mA，100mA 電流 - 集電極截止（最大）:- 在某 Ic、Vce 時(shí)的最小直流電流增益 (hFE):200 @ 2mA，5V 功率 - 最大:250mW 頻率 - 轉(zhuǎn)換:250MHz 安裝類型:表面貼裝 封裝/外殼:6-TSSOP，SC-88，SOT-363 供應(yīng)商設(shè)備封裝:PG-SOT363-6 包裝:帶卷 (TR) 其它名稱:SP000747402 |
| MAT03GBC | 制造商:Analog Devices 功能描述: |
| MAT04 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Matched Monolithic Quad Transistor |
| MAT-04 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Matched Monolithic Quad Transistor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。