AT-232-PIN
Digital Attenuator 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz
Features
• Attenuation: 2 dB steps to 30 dB • Temperature Stability: ± 0.18 dB from –55°C to +85°C Typical • Low DC Power Consumption • Hermetic Surface Mount Package • Fast Switching Speed, 12 ns Typical • 50 Ohm Nominal Impedance • Lead-Free CR-6 Package • 260°C Reflow Compatible • RoHS* Compliant Rev. V5
Functional Schematic
PIN 1 VC1
16 dB
RF1 PIN 16 GND GND
8 dB
/VC1 VC2 /VC2 VC3 /VC3 VC4 /VC4
2 dB 4 dB
GND GND GND GND Orientation Mark RF2
Description
M/A-COM’s AT-232-PIN is a GaAs FET 4-bit digital attenuator with a 2 dB minimum step size and 30 dB total attenuation. This attenuator is in a hermetically sealed ceramic 16-lead surface mount package. The AT-232-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 7
Function
VC1 /VC1 VC2 /VC2 VC3 /VC3 VC4 /VC4
Pin No.
9 10 11 12 13 14 15 16
Function
RF2 GND GND GND GND GND GND RF1
Ordering Information
Part Number
AT-232-PIN
8
The metal bottom of the case must be connected to RF and DC ground.
Package
Bulk Packaging
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-232-PIN
Digital Attenuator 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz
Electrical Specifications: From –55°C to +85°C1
Parameter
Reference Insertion Loss
Rev. V5
Test Conditions
—
Frequency
DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 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
2.0 2.3 2.5
Attenuation Accuracy 2
Any Single Bit
Any Combination of Bits
± (0.15 dB +3% of atten setting in dB) dB ± (0.2 dB +3% of atten setting in dB) dB Or ± 0.45 dB, whichever is greater ± (0.22 dB +3% of atten setting in dB) dB ± (0.25 dB +4% of atten setting in dB) dB Or ± 0.45 dB, whichever is greater Ratio ns ns mV dBm dBm dBm dBm dBm dBm µA µA — — — — — — — — — — — — — 12 18 25 +20 +28 +40 +50 +45 +68 — — 1.6:1 — — — — — — — — — 20 200
VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression Input IP3 Input IP2 Input Leakage Current (Low) Input Leakage Current (High)
— 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 -0.2 to 0V -8.0 to -5.0V
1. All specifications apply when operated with control voltages of 0.0V to -5.0V. 2. This attenuator is guaranteed monotonic.
Absolute Maximum Ratings 3,4
Parameter
Max Input Power 0.05 GHz 0.5 - 2.0 GHz Control Voltage Operating Temperature Storage Temperature 3. 4.
Absolute Maximum
+27 dBm +34 dBm -8.5 V < Vc < +5 V -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.
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-232-PIN
Digital Attenuator 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz
Truth Table (Digital Attenuator) Handling Procedures
Please observe the following precautions to avoid damage:
Control Inputs /VC4 VC4 /VC3 VC3 /VC2 VC2 /VC1 VC1 Atten. (dB)
-5V 0V -5V -5V -5V 0V 0V -5V 0V 0V 0V -5V -5V -5V 0V -5V -5V 0V 0V 0V -5V 0V 0V -5V -5V -5V -5V 0V -5V 0V 0V 0V 0V -5V 0V -5V -5V -5V -5V -5V 0V 0V 0V 0V 0V 0V -5V -5V Ref. 2 dB 4 dB 8 dB 16 dB 30 dB
Rev. V5
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.
Typical Performance Curves
Ref. Insertion Loss vs. Frequency
- 55 °C 4 + 2 5 °C + 8 5 °C
VSWR vs. Frequency
2 dB 1.6 1.5 4 dB 8 dB 16 d B 3 0 d B Inser t io n Lo ss
Insertion Loss (dB)
3
1.4
2
VSWR
0.0 0.5 1.0 1.5 2.0 2.5 3.0
1.3 1.2
1
1.1
0
1.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Fre que ncy (GHz )
Fre que ncy (GHz )
Attenuation Accuracy vs. Frequency
2 dB 16 d B 4 dB 8 dB 3 0 dB
D ev ia tio n fro m N o mina l A tten (dB)
3.00 2.50
2.00 1.50
1.00
0.50
0.00
-0.50 -1.00 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
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-232-PIN
Digital Attenuator 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz
Lead-Free, CR-6 Ceramic Package†
Rev. V5
†
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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