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參數資料
| 型號： | AA226-87 |
| 元件分類： | 衰減器 |
| 英文描述： | 500 MHz - 2500 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 2.6 dB INSERTION LOSS-MAX |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 329K |
| 代理商： | AA226-87 |
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 9/00A
GaAs IC 4 Bit Digital Attenuator
1 dB LSB Positive Control 0.5–2.5 GHz
Features
s Attenuation 1 dB Steps to 15 dB
with High Accuracy
s Single Positive Control (+3 to +5 V) for
Each Bit
s Low DC Power Consumption
s Small Low Cost TSSOP-16 Plastic
Package
TSSOP-16
AA226-87
0.173 (4.40 mm)
± 0.004 (0.10 mm)
0.197 (5.00 mm)
± 0.004 (0.10 mm)
0.252 (6.4 mm)
BSC
PIN 16
PIN 1
INDICATOR
PIN 1
0.006 (0.15 mm) MAX.
0.002 (0.05 mm) MIN.
0.047 (1.20 mm)
MAX.
0.035 (0.90 mm)
+ 0.006 (0.15 mm) /
-0.004 (-0.10 mm)
0.0256 (0.65 mm)
BSC
0.009 (0.22 mm) REF.
R 0.004 (0.09 mm)
MIN.
0.024
(0.60 mm)
± 0.006
(0.15 mm)
Description
The AA226-87 is a 4 bit, single positive control GaAs IC
FET digital attenuator. It requires DC blocking capacitors,
positive supply voltage (VS) and four individual positive bit
control voltages (V1–V4). The AA226-87 is particularly
suited where high attenuation accuracy, low insertion loss
and low intermodulation products are required. Typical
applications include base station, wireless data and
wireless local loop gain control circuits.
Parameter1
Condition
Frequency
Min.
Typ.
Max.
Unit
Insertion Loss
0.5–1.0 GHz
1.3
1.7
dB
1.0–2.0 GHz
1.7
2.2
dB
2.0–2.5 GHz
2.3
2.6
dB
Attenuation Range
15
dB
Attenuation Accuracy2
0.5–1.0 GHz
± (0.2 + 3% of
Attenuation Setting in dB)
dB
1.0–2.5 GHz
± (0.3 + 4% of
Attenuation Setting in dB)
dB
VSWR (I/O)3
0.5–2.5 GHz
1.5:1
2.0:1
Switching Characteristics4
Rise, Fall (10/90% or 90/10% RF)
150
ns
On, Off (50% CTL to 90/10% RF)
300
ns
Video Feedthru
70
mV
Input Power for 1 dB Compression
VS = +3 V
0.5–2.5 GHz
+20
+25
dBm
VS = +5 V
0.5–2.5 GHz
+24
+30
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
VS = +3 V
0.5–2.5 GHz
+43
+49
dBm
VS = +5 V
0.5–2.5 GHz
+44
+50
dBm
Control Voltages
VLow = 0 to 0.2 V @ 20 A Max.
VHigh = +3 V @ 100 A Max. to +5 V @ 200 A Max.
VS = VHigh ± 0.2 V
Electrical Specifications at -40°C to +85°C (0, +5 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. Attenuation referenced to insertion loss.
3. Input/output.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
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