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參數(shù)資料
| 型號： | MAT02 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Noise, Matched Dual Monolithic Transistor |
| 中文描述： | 低噪音，符合雙單片晶體管 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 264K |
| 代理商： | MAT02 |
MAT02
–12–
REV. C
0
P
current. A set resistor of 549 k
was found to provide the best
step response for this circuit. T he resultant supply current is
found from:
(
I
SET
R
SET
=
V
+
)
±
V
±
(
)
± 2
V
BE
)
,
I
SY
=
15
I
SET
(22)
T he I
SET
, using
±
15 V supplies and an R
SET
of 549 k
, is ap-
proximately 52
μ
A which will result in supply current of 784
μ
A.
Dynamic range of this amplifier is excellent; the OP32 has an
output voltage swing of
±
14 V with a
±
15 V supply.
Input characteristics are outstanding. T he MAT 02F has offset
voltage of less than 150
μ
V at 25
°
C and a maximum offset drift
of 1
μ
V/
°
C. Nulling the offset will further reduce offset drift.
T his can be accomplished by slightly unbalancing the collector
load resistors. T his adjustment will reduce the drift to less than
0.1
μ
V/
°
C.
Input bias current is relatively low due to the high current gain
of the MAT 02. T he minimum
β
of 400 at 1 mA for the
MAT 02F implies an input bias current of approximately 2.5
μ
A.
T his circuit should be used with signals having relatively low
source impedance. A high source impedance will degrade offset
and noise performance.
T his circuit configuration provides exceptionally low input noise
voltage and low drift. Noise can be reduced even further by rais-
ing the collector currents from 1 mA to 3 mA, but power con-
sumption is then increased.
T ransistors Q2 and Q3 form a 2 mA current source (0.65 V/
330
~ 2 mA).
Each collector of Q1 operates at 1 mA. T he
OP32 inputs are 3 V below the positive supply voltage (R
L
I
C
~ 3 V). T he OP32’s low input offset current, typically less than
1 nA, and low offset voltage of 1 mV cause negligible error
when referred to the amplifier input. Input stage gain is g
m
R
L
,
which is approximately 100 when operating at I
C
of 1 mA with
R
L
of 3 k
. Since the OP32 has a minimum open-loop gain of
500,000, total open-loop gain for the composite amplifier is
over 50 million. Even at closed-loop gain of 1000, the gain er-
ror due to finite open-loop gain will be negligible. T he OP32
features excellent symmetry of slew-rate and very linear gain.
Signal distortion is minimal.
Frequency compensation is very easy with this circuit; just vary
the set-resistor R
S
for the desired frequency response.
Gain-bandwidth of the OP32 varies directly with the supply
OUT LINE DIME NSION
Dimensions shown in inches and (mm).
6-Lead Metal Can
(T O-78)
0.250 (6.35) MIN
0.050 (1.27) MAX
0.750 (19.05)
0.500 (12.70)
0.185 (4.70)
0.165 (4.19)
REFERENCE PLANE
0.019 (0.48)
0.016 (0.41)
0.021 (0.53)
0.016 (0.41)
0.045 (1.14)
0.010 (0.25)
0.040 (1.02) MAX
BASE & SEATING PLANE
0
0
0
0
0.034 (0.86)
0.027 (0.69)
0.045 (1.14)
0.027 (0.69)
0.160 (4.06)
0.110 (2.79)
0.100 (2.54) BSC
5
2
6
4
3
1
0.200
(5.08)
BSC
BSC
45
°
BSC
Figure 23. Fast Logarithmic Amplifier
Figure 24. Low-Noise, Single-Ended X1000 Amplifier
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| MAT02EH | CONN HEADER 18POS .100 STR 15AU |
| MAT02FH | CONN HEADER 20POS .100 STR 15AU |
| MAT03 | Low Noise, Matched Dual PNP Transistor |
| MAT03AH | Low Noise, Matched Dual PNP Transistor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAT020903H | 制造商:Analog Devices 功能描述:MATCHED MONOLITHE TRANSISTOR - Rail/Tube |
| MAT02AH | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MAT02AH/883C | 制造商:Rochester Electronics LLC 功能描述:LOW-NOISE DUAL- LEV.B - Bulk |
| MAT02BH | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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