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| Digital Switched Delay Line 1.8 - 2.4 GHz Features * * * * * * 750 pS Dynamic Range, 50 pS Step Size BGA Package Parallel Control Interface Positive Control Logic Cascadable No off chip components required MAMUSM0008 V2 Block Diagram Description The M/A-COM MAMUSM0008 is a 0 to 750 pS variable delay line controlled by 4 complementary bit pairs. It provides the user with 50 pS delay step sizes for use in standard wireless applications. The MAMUSM0008 is particularly useful in providing time delay in the cancellation loops of feed-forward amplifiers. Absolute Maximum Ratings 2,3 Parameter Control Voltage Maximum RF Input Power Operating Temperature Storage Temperature Absolute Maximum 8.5V +30 dBm -40C to +85C -55C to +125C Ordering Information1 Part Number MAMUSM0008 MAMUSM0008TR MAMUSM0008-TB 2. TA = +25C (unless otherwise specified) 3. Exceeding any one or combination of these limits may cause permanent damage to this device. Package Bulk Packaging 1000 piece reel Units Mounted on Test Board 1. Reference Application Note M513 for reel size information. BGA Package 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Digital Switched Delay Line 1.8 - 2.4 GHz Electrical Specifications: TA = 25C, Z0 = 50 Parameter Frequency Delay Line Control Range Delay Line Control Step Size Delay Step Accuracy Output Return Loss Input Return Loss Input P1dB Insertion Loss Output IP3 Control Voltage Control Current Switching Speed (50% TTL to 90% RF) MAMUSM0008 V2 Conditions 1.8 - 2.4 GHz -- -- 5 pS +5% of step size in pS -- -- -- -- PIN = 0 dBm, 5 MHz Spacing -- -- 3V Control Units -- pS pS -- dB dB dBm dB dBm V A nS Min. -- 0 -- -- 15 15 -- 7 5 -- 2.7 2 -- Typ. -- -- 50 -- 20 20 27 -- 38 3 20 72 Max. -- 750 -- -- -- -- -- 8 -- 8.5 -- 100 Pin-Out Diagram 18 GND GND GND CTL_C1 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND CTL_B2 CTL_B1 GND GND GND GND GND CTL_A2 GND GND CTL_A1 GND GND GND GND GND GND GND RF_IN GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND CTL_C2 17 16 GND 15 14 GND 13 12 GND 11 10 GND 9 8 GND 7 6 GND 8 4 RF_OUT 3 2 GND 1 A GND GND GND GND CTL_D1 GND GND GND CTL_D2 GND GND GND GND GND GND GND GND B C GND D E GND F G H J K L M N P R T U V 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Digital Switched Delay Line 1.8 - 2.4 GHz Control Herein is described the control method for the MAMUSM0008 Digital Delay Line. The information will be aimed specifically at the use of the delay line mounted on a M/A-COM test sample board. The same theory and control scheme can be applied directly to the component by itself. This product allows the insertion of a variable electrical delay between its two ports. The control consists of four complimentary bit pairs (8 bits total). Each pair is given a different letter, as shown in the table to the right:. D2 D1 C2 C1 B2 B1 A2 A1 10101010 10101001 10100110 10100101 10011010 10011001 10010110 10010101 01101010 01101001 01100110 01100101 01011010 01011001 01010110 01010101 MAMUSM0008 V2 Delay Line 50 ps 100 ps 200 ps 400 ps Associated Letter A B C D Note that each delay line has a pair named as follows: CTL_A1 and CTL_A2, CTL_B1 and CTL_B2, CTL_C1 and CTL_C2, CTL_D1 and CTL_D2. hex AA A9 A6 A5 9A 99 96 95 6A 69 66 65 5A 59 56 55 decimal 170 169 166 165 154 153 150 149 106 105 102 101 90 89 86 85 state 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ps delay 0 50 100 150 200 250 300 350 40 450 500 550 600 650 700 750 The above table illustrates the method of controlling the bits for the desired delay in pico seconds. The hex and decimal representations are included for programming purposes. "1" denotes 5 volts and "0" denotes 0 volts. A given delay line is set when bits 2 and bit 1 are set to 0 and 1 respectively. The given delay line is bypassed when the bits 2 and 1 are set to 1 and 0 respectively. The "GND" pin on the test board header must be connected to the DC supply ground. 3 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Digital Switched Delay Line 1.8 - 2.4 GHz Typical Performance Curves OIP3 vs. Frequency 50 40 30 20 10 0 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 MAMUSM0008 V2 Delay vs. Frequency 1600 1400 1200 1000 800 600 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 Phase vs. Frequency 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 Input Return Loss vs. Frequency -10 -15 -20 -25 -30 -35 -40 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 Insertion Loss vs. Frequency -5.0 -5.5 -6.0 -6.5 -7.0 -7.5 -8.0 1.80 Output Return Loss vs. Frequency -10 -15 -20 -25 -30 -35 -40 1.95 2.10 Frequency (GHz) 2.25 2.40 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 4 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 4 Visit www.macom.com for additional data sheets and product information. Digital Switched Delay Line 1.8 - 2.4 GHz Typical Performance Curves Insertion Loss vs. Frequency over Temperature at 0 pS State -4 MAMUSM0008 V2 Insertion Loss vs. Frequency over Temperature at 750 pS State -5 -6 -7 -5 -6 -8 -7 -40C +25C +85C 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 -9 -10 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 -40C +25C +85C -8 Input Return Loss vs. Frequency (+85C) -10 -15 -20 -25 -30 -35 -40 1.80 Output Return Loss vs. Frequency (+85C) -10 -15 -20 -25 -30 -35 -40 1.95 2.10 Frequency (GHz) 2.25 2.40 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 5 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Digital Switched Delay Line 1.8 - 2.4 GHz Measurement The simplest way to measure the delay steps is with a vector network analyzer (VNA). For taking S-Parameter data, perform a standard calibration and measure the parameters for the given state. Below is a description of how to see the delay accurately. M/A-COM recommends the following measurement procedure: Set the delay line to the reference or insertion delay state. With the two ports of the VNA connected to the "in" and "out" on the test board, measuring S21, set display memory, and display data/memory. This will normalize your data to the reference insertion state. Next, switch the measurement format to phase. This should be flat and zero due to the normalization. Switch in the first delay line. (50ps). The display will not remain on zero, but will have an offset. Under the Scale/Reference menu, select electrical delay, and dial that up until the data reads zero again, across the band of interest. That electrical delay will be 50ps. Continue to switch in the delay lines, dialing in more delay each time. Other methods are possible, but this straightforward approach. We do not using the `delay' format in the VNA. method of measuring this results response, and is less accurate than outlined above. is the most recommend The VNA's in a noisy the method MAMUSM0008 V2 Upon request, M/A-COM can provide a test control board to ease stepping through the states. 6 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. |
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