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 Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz
V 5.00
AT65-0413
Features
n n n n n
SO-16
Attenuation: 1.0 dB steps to 15 dB Low DC Power Consumption Integral TTL Driver 50 Ohm Impedance Temperature Stability: 0.18 dB from -55C to +85C Typ.
Description
M/A-COM's AT65-0413 is a GaAs FET 4-bit digital attenuator with a 1.0 dB minimum step size and a 15 dB total attenuation range. This device is in a SOIC-16 plastic surface mount package. The AT65-0413 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. Typical applications include dynamic range setting in precision receiver circuits and other gain/leveling control circuits.
Electrical Specifications: TA = 25C
Parameter Insertion Loss Test Conditions -- Frequency DC - 0.5 GHz DC - 2.0 GHz DC - 3.0 GHz DC - 3.0 GHz DC - 3.0 GHz Units dB dB dB dB Ratio nS nS mV dBm dBm dBm dBm dBm dBm V V V V A A mA Min. -- -- -- Typ. 1.3 1.7 1.9 Max. 1.6 2.1 2.4
Attenuation Accuracy VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression Input IP3 Input IP2 Vcc -VEE Vctl Vctl Input Leakage Current (Low) Input Leakage Current (High) Icc
Any Bit or Combination of Bits Full Range
(.25 + 3% of attenuation) or .55 dB -- -- -- -- -- -- -- -- -- -- 4.5 -8.0 0.0 2.0 -- -- -- -- 10 30 35 +20 +28 +40 +50 +45 +68 5.0 -5.0 -- -- -- -- -- 1.6:1 50 150 -- -- -- -- -- -- -- 5.5 -4.75 0.8 5.0 20 20 4.0
10% to 90% 50% Cntl to 90%/10% RF In-Band Input Power Input Power Two-tone inputs up to +5 dBm Two-tone inputs up to +5 dBm -- Logic (0) TTL Logic (1) TTL 0 to 0.8 V 2.0 to 5.0 V Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc -2.1V to Vcc Vee = -5.0 to -8.0V 0.05 GHz 0.5 - 3.0 GHz 0.05 GHz 0.5 - 3.0 GHz 0.05 GHz 0.5 - 3.0 GHz -- -- -- -- -- -- --
-Iee
--
mA
--
--
-1
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz
AT65-0413
V 5.00
Pin Configuration
Pin # 1 2 3 4 5 6 7 8 N/C = No Connection Function GND RF1 GND N/C Vee Vcc C4 C3 Pin # 9 10 11 12 13 14 15 16 Function C2 C1 GND GND N/C GND RF2 GND
Absolute Maximum Ratings 1
Parameter
Max. Input Power 0.05 GHz 0.5 - 3.0 GHz +Vcc -Vee Control Voltage Operating Temperature Storage Temperature
Absolute Maximum
+27 dBm +34 dBm +5.5V -8.5V -0.5 to Vcc + 0.5V -40C to +85C -65C to +125C
1. Operation of this device above any one of these parameters may cause permanent damage.
Recommended PCB Configuration
Truth Table
C1 0 1 0 0 0 1 C2 0 0 1 0 0 1 C3 0 0 0 1 0 1 C4 0 0 0 0 1 1 Attenuation Loss, Reference 1.0 dB 2.0 dB 4.0 dB 8.0 dB 15.0 dB
0 = TTL Low; 1 = TTL High
Typical Performance Curves
Typical Insertion Loss (dB)
Deviation from Nom. Attenuation (dB)
+25C -40C +85C
Attenuation Accuracy @+25C
8dB 0.4 0.2 15dB 2dB 1dB 4dB
2.5 2
Loss (dB)
1.5 1 0.5 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0
0 -0.2 -0.4 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Frequency (GHz)
Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
2
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz Typical Performance Curves
AT65-0413
V 5.00
Attenuation Accuracy @ -40C
4dB 2dB 1dB 8dB 15dB
Attenuation Accuracy @ +85C
1dB 2dB 4dB 8dB
Deviation from Nom. Attenuation (dB)
0.4
Deviation from Nom. Attenuation (dB)
15dB
0.4
0.2
0.2
0
0
-0.2
-0.2
-0.4 0.0 0.5 1.0 1.5 2.0 2.5 3.0
-0.4 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Frequency (GHz)
RF1 VSWR vs. Frequency
2 & 4 dB 1.3 Insertion Loss 1 dB 15 dB 8 dB
RF2 VSWR vs. Frequency
15 dB Insertion Loss 1 dB 2, 4 & 8 dB
1.5 1.4
1.2
VSWR
VSWR
1.1 1 0.0 0.5 1.0 1.5 2.0 2.5 3.0
1.3 1.2 1.1 1 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Frequency (GHz)
Ordering Information
Part Number AT65-0413 AT65-0413TR AT65-0413-TB Package SOIC-16 Lead Plastic Tape and Reel (1K Reel) Unit mounted on a test board
Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
3


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