Digital Switched Delay Line 1.8 - 2.4 GHz MAMUSM0008 V2 Features • • • • • • Block Diagram 750 pS Dynamic Range, 50 pS Step Size BGA Package Parallel Control Interface Positive Control Logic Cascadable No off chip components required 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 Absolute Maximum Control Voltage 8.5V Maximum RF Input Power +30 dBm Operating Temperature -40°C to +85°C Storage Temperature -55°C to +125°C 2. TA = +25°C (unless otherwise specified) 3. Exceeding any one or combination of these limits may cause permanent damage to this device. Ordering Information1 Part Number Package MAMUSM0008 Bulk Packaging MAMUSM0008TR 1000 piece reel MAMUSM0008-TB 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 MAMUSM0008 V2 Electrical Specifications: TA = 25°C, Z0 = 50 Ω Parameter Conditions Units Min. Typ. Max. Frequency 1.8 - 2.4 GHz — — — — Delay Line Control Range — pS 0 — 750 Delay Line Control Step Size — pS — 50 — Delay Step Accuracy ± 5 pS +5% of step size in pS — — — — Output Return Loss — dB 15 20 — Input Return Loss — dB 15 20 — Input P1dB — dBm — 7 27 — Insertion Loss — dB 5 — 8 Output IP3 PIN = 0 dBm, 5 MHz Spacing dBm — 38 — Control Voltage — V 2.7 3 8.5 Control Current — µA 2 20 — Switching Speed (50% TTL to 90% RF) 3V Control nS — 72 100 Pin-Out Diagram 18 17 GND 16 15 GND GND GND 14 13 GND GND CTL_C2 12 11 GND GND GND 10 9 8 GND GND CTL_D1 7 GND GND GND 6 8 GND GND CTL_D2 4 RF_OUT GND GND GND GND GND GND GND GND GND GND GND GND GND CTL_B2 GND GND GND K GND M J L N GND GND CTL_B1 GND GND H GND GND GND G GND GND GND GND GND CTL_A2 GND GND CTL_A1 GND GND GND GND GND GND GND GND GND GND GND P R GND GND RF_IN F GND GND GND D E GND GND B C GND GND GND GND A GND GND GND GND 1 GND GND GND GND 2 GND CTL_C1 GND 3 T U GND 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 MAMUSM0008 V2 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:. Delay Line Associated Letter 50 ps A 100 ps B 200 ps C 400 ps 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. D2 D1 C2 C1 B2 B1 A2 A1 hex decimal state ps delay 10101010 AA 170 0 0 10101001 A9 169 1 50 10100110 A6 166 2 100 10100101 A5 165 3 150 10011010 9A 154 4 200 10011001 99 153 5 250 10010110 96 150 6 300 10010101 95 149 7 350 01101010 6A 106 8 40 01101001 69 105 9 450 01100110 66 102 10 500 01100101 65 101 11 550 01011010 5A 90 12 600 01011001 59 89 13 650 01010110 56 86 14 700 01010101 55 85 15 750 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 MAMUSM0008 V2 Typical Performance Curves OIP3 vs. Frequency Delay vs. Frequency 50 1600 40 1400 30 1200 20 1000 10 800 600 0 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 1.8 2.4 Phase vs. Frequency 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 Input Return Loss vs. Frequency 1.0 -10 0.8 -15 0.6 0.4 -20 0.2 0.0 -25 -0.2 -30 -0.4 -0.6 -35 -0.8 -1.0 -40 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 Insertion Loss vs. Frequency 1.8 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 2.3 2.4 Output Return Loss vs. Frequency -5.0 -10 -5.5 -15 -6.0 -20 -6.5 -25 -7.0 -30 -7.5 -35 -8.0 1.80 1.9 -40 1.95 2.10 Frequency (GHz) 2.25 2.40 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 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 MAMUSM0008 V2 Typical Performance Curves Insertion Loss vs. Frequency over Temperature at 750 pS State Insertion Loss vs. Frequency over Temperature at 0 pS State -4 -5 -6 -5 -7 -6 -8 -40°C +25°C +85°C -7 -40°C +25°C +85°C -9 -8 -10 1.8 1.9 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 1.8 2.0 2.1 2.2 Frequency (GHz) 2.3 2.4 Output Return Loss vs. Frequency (+85°C) Input Return Loss vs. Frequency (+85°C) -10 -10 -15 -15 -20 -20 -25 -25 -30 -30 -35 -35 -40 1.80 1.9 -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 MAMUSM0008 V2 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 displayÆ 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 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.