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AT-233 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AT-233
기능 Digital Attenuator/ 30 dB/ 4-Bit/ TTL Driver/ DC - 2 GHz
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AT-233 데이터시트, 핀배열, 회로
Digital Attenuator, 30 dB, 4-Bit,
TTL Driver, DC - 2 GHz
V 3.00
Features
n Attenuation: 2 dB Steps to 30 dB 2
n Temperature Stability: ± 0.18 dB from –55°C to +85°C
Typical
n Low DC Power Consumption
n Hermetic Surface Mount Package
n Integral TTL Driver
n 50 Ohm Nominal Impedance
Description
M/A-COM’s AT-233 is a GaAs FET 4-Bit digital
attenuator with a 2 dB minimum step size and 30 dB total
attenuation. This attenuator and integral TTL driver is in a
hermetically sealed ceramic 16-lead surface mount package.
The AT-233 is ideally suited for use where accuracy, fast
switching, very low power consumption and low
intermodulation products are required. Typical applications
include dynamic range setting in precision receiver circuits
and other gain/leveling control circuits. Environmental
screening is available. Contact the factory for information.
CR-12
Electrical Specifications: TA = 25°C1
Parameter
Reference Insertion Loss
Test Conditions
Attenuation Accuracy3
Any Single Bit
Any Combination of Bits
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression 4
Input IP3 4
Input IP2 4
10% to 90%
50% Control to 90/10% RF
In-Band (peak-peak)
Input Power
For two tone input power
Up to +5 dBm
For two-tone input power
Up to +5 dBm
Frequency Units
Min
Typ
Max
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
dB
dB
dB
— 2.3
— 2.65
— 2.8
DC - 1.0 GHz
DC - 2.0 GHz
DC - 1.0 GHz
DC - 2.0 GHz
± (0.2 + 3% of attenuation setting in dB) dB
± (0.2 + 3% of attenuation setting in dB) dB
or ± 0.45 dB, whichever is greater
± (0.20 + 3% of attenuation setting in dB) dB
± (0.25 + 4% of attenuation setting in dB) dB
or ± 0.45 dB, whichever is greater
DC - 2.0 GHz Ratio
— 1.7:1
— ns — 10 —
— ns — 30 —
— mV — 35 —
0.05 GHz
dBm
+20
0.5 - 2.0 GHz dBm
+28
0.05 GHz
dBm
+40
0.5 - 2.0 GHz dBm
+50
0.05 GHz
dBm
+45
0.5 - 2.0 GHz dBm
+68
1. All specifications apply when operated with bias voltages of +5V or VCC and –5.0V to –8.0V for VEE, and 50 Ohm impedance at
all ports unless otherwise specified.
2. Above reference insertion loss.
3. This attenuator is guaranteed monotonic.
4. VEE = -5V for the typical numbers given.






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