AT-263-PIN
Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Features
• Attenuation: 1 dB steps to 31 dB • Temperature Stability: ± 0.18 dB from –55°C to +85°C Typical • Low DC Power Consumption • Hermetic Surface Mount Package • Integral TTL Driver • 50 Ohm Nominal Impedance • Lead-Free CR-12 Package • 260°C Reflow Compatible • RoHS* Compliant Rev. V6
Functional Schematic
Description
M/A-COM’s AT-263-PIN is a GaAs FET 5-bit digital attenuator with a 1 dB minimum step size and 31 dB total attenuation. This attenuator and integral TTL driver is in a hermetically sealed ceramic 16-lead surface mount package. The AT-263-PIN 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.
Pin Configuration
Pin No.
1 2 3 4 5 6
Function
RF1 GND GND GND GND GND GND RF2
Pin No.
9 10 11 12 13 14 15 16
Function
C5 +5V -5V C4 C3 C2 C1 GND
Ordering Information
Part Number
AT-263-PIN AT-263TR AT-263-TB
7 8
Package
Bulk Packaging 1000 piece reel Sample Test Board
The metal bottom of the case must be connected to RF and DC ground.
Note: Reference Application Note M513 for reel size information.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 1
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
AT-263-PIN
Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Electrical Specifications: (From –55°C to +85°C)1
Parameter
Reference Insertion Loss
Rev. V6
Test Conditions
—
Frequency
DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 2.0 GHz — — — 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz — — —
Units
dB dB dB
Min
— — —
Typ
— — —
Max
2.4 2.8 3.0
Attenuation Accuracy 2
Any Single Bit Any Combination of Bits — 10% to 90% 50% Control to 90/10% RF In-Band (peak-peak) Input Power Input Power For two-tone Input Power Up to +5 dBm For two-tone Input Power Up to +5 dBm — — Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc – 2.1V to Vcc Vee = -5.0 to -8.0V Logic 0 (TTL) Logic 1 (TTL) 0 to 0.8V 2.0 to 5.0V
± (0.25 +3% of atten setting in dB) dB ± (0.25 +3% of atten setting in dB) dB or ± 0.4 dB, whichever is greater Ratio ns ns mV dBm dBm dBm dBm dBm dBm V V mA — — — — — — — — — — 4.5 -8.0 — — 9 40 30 +20 +28 +40 +48 +45 +68 5.0 — — 1.6:1 — — — — — — — — — 5.5 -5.0 5.0
VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression Input IP3 Input IP2 Vcc Vee Icc
Iee Vctl Vctl Input Leakage Current (Low) Input Leakage Current (High)
— — — — —
mA V V µA µA
— 0.0 2.0 — —
— — — — —
1.0 0.8 5.0 1.0 1.0
1. All specifications apply when operated with bias voltages of +5V for Vcc and –5.0V for Vee. 2. This attenuator is guaranteed monotonic.
2
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
AT-263-PIN
Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Absolute Maximum Ratings 3,4
Parameter
Max Input Power 0.05 GHz 0.5 - 2.0 GHz VCC VEE VCC - VEE Vin5 Operating Temperature Storage Temperature 3. 4. 5.
Rev. V6
Recommended PCB Configuration
Absolute Maximum
+27 dBm +34 dBm -0.5V ≤ VCC ≤ +7.0V -8.5V ≤ VEE ≤ +0.5V -0.5V ≤ VCC - VEE ≤ 14.5V -0.5V ≤ Vin ≤ VCC + 0.5V -55°C to +125°C -65°C to +150°C
Exceeding any one or combination of these limits may cause permanent damage to this device. M/A-COM does not recommend sustained operation near these survivability limits. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply.
Handling Procedures
Please observe the following precautions to avoid damage:
Truth Table (Digital Attenuator)
Control Inputs C5
0 0 0 0 0 1 1
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices.
C4
0 0 0 0 1 0 1
C3
0 0 0 1 0 0 1
C2
0 0 1 0 0 0 1
C1
0 1 0 0 0 0 1
Attenuation
Reference 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
0 = TTL Low; 1 = TTL High
3
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
AT-263-PIN
Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Typical Performance Curves
Ref. Insertion Loss vs. Frequency
+ 8 5 °C 5 + 2 5 °C - 55 °C
Rev. V6
Attenuation Accuracy vs. Frequency
1,2 , 4 ,8 , 16 d B F ull A t t enuat io n
4
Deviation from Nominal Atten (dB)
0.5
0
Loss (dB)
3
-0.5
2 1
-1
0 0.0 0.5 1.0 1.5 2.0
-1.5 0.0
0.5
1.0
1.5
2.0
Fre que ncy (GHz )
Fre que ncy (GHz )
VSWR vs. Frequency
4 d B St at e 2.00 1.80 1 d B St at e
Lead-Free, CR-12 Ceramic Package†
V SW R
1.60 1.40 1.20 1.00 0.00
0.50
1.00
1.50
2.00
Frequency (GHz)
†
Reference Application Note M538 for lead-free solder reflow recommendations.
4
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
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