AD8115:  Low Cost 225 MHz 16 x 16 Crosspoint Switch, G=+2

The AD8114/AD81151 are high speed 16 x 16 video crosspoint switch matrices. They offer a –3 dB signal bandwidth greater than 200 MHz, and channel switch times of less than 50 ns with ...More

AD8115:  Low Cost 225 MHz 16 x 16 Crosspoint Switch, G=+2

Product Description

The AD8114/AD81151 are high speed 16 x 16 video crosspoint switch matrices. They offer a –3 dB signal bandwidth greater than 200 MHz, and channel switch times of less than 50 ns with 1% settling. With –70 dB of crosstalk and –90 dB isolation (@ 5 MHz), the AD8114/AD8115 are useful in many high speed applications. The differential gain and differential phase of better than 0.05% and 0.05° respectively, along with 0.1 dB flatness out to 25 MHz while driving a 75 Ω back-terminated load, make the AD8114/AD8115 ideal for all types of signal switching.

AD8114/AD8115 include 16 independent output buffers that can be placed into a high impedance state for paralleling crosspoint outputs so that off channels do not load the output bus. The AD8114 has a gain of 1, while the AD8115 offers a gain of 2. They operate on voltage supplies of ±5 V while consuming only 70 mA of idle current. The channel switching is performed via a serial digital control (which can accommodate daisy-chaining of several devices) or via a parallel control, allowing updating of an individual output without reprogramming the entire array.

The AD8114/AD8115 is packaged in 100-lead LQFP package and is available over the extended industrial temperature range of –40°C to +85°C.

An evaluation board is available for this product and may be ordered using the following product number: AD8114-EVAL and AD8115-EVAL. Schematic and layout for this evaluation board is contained in the product datasheet.

1Patent pending.

Features

  • 16 x 16 high speed nonblocking switch arrays
    AD8114; G = 1
    AD8115; G = 2
  • Serial or parallel programming of switch array
  • Serial data out allows daisy-chaining of multiple 16 x 16 arrays to create larger switch arrays
  • High impedance output disable allows connection of multiple devices without loading the output bus
  • For smaller arrays see the AD8108/AD8109 (8 x 8) or AD8110/AD8111 (16 x 8) switch arrays
  • Complete solution
    Buffered inputs
    Programmable high impedance outputs
    16 output amplifiers, AD8114 (G = 1),
    AD8115 (G = 2)
    Drives 150 Ω loads
  • Excellent video performance
    25 MHz, 0.1 dB gain flatness
    0.05%/0.05° differential gain/differential phase error (RL = 150 Ω)
  • Excellent ac performance
    -3 dB bandwidth: 225 MHz
    Slew rate: 375 V/µs
  • Low power of 700 mW (2.75 mW per point)
  • Low all hostile crosstalk of -70 dB @ 5 MHz
  • Reset pin allows disabling of all outputs (connected through a capacitor to ground provides power-on reset capability)
  • 100-lead LQFP (14 mm x 14 mm)

Diagrams

AD8115 Diagram
Functional Block Diagram for AD8115

Specifications

Type 16 X 16
Output Buffer Yes G = 2
Supply Voltage (V) ±5V
Output Swing (V) ±3V
Small Signal BW (MHz) 200MHz
Slew Rate (V/us) 450
Cross Talk @ 10 MHz (-dB) 52
Control Interface Serial/Parallel

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Part# Type Output Buffer Supply Voltage (V) Output Swing (V) Small Signal BW (MHz) Slew Rate (V/us) Cross Talk @ 10 MHz (-dB) Price* (1000-4999)
AD8104 32 x 16 Yes G = 1 ±2.5 ±2 600 1,800 72 $177.10
AD8105 32 x 16 Yes G = 2 ±2.5 ±2 600 1,800 68 $177.10
AD8106 16 x 5 Yes G = 1 ±5 ±3 390 500 70 $15.13
AD8107 16 x 5 Yes G = 2 ±5 ±3 260 500 80 $15.13
AD8108 8 X 8 Yes G = 1 ±5 ±2.5 350 400 76 $18.72
AD8109 8 X 8 Yes G = 2 ±5 ±3 250 480 83 $18.72
AD8110 16 x 8 Yes G = 1 ±5 ±3 390 500 70 $32.89
AD8111 16 x 8 Yes G = 2 ±5 ±3 260 500 80 $32.89
AD8112 16 x 8 Yes G = 2 ±12 ±10 60 100 83 @ 20 kHz $10.07
AD8113 16 X 16 Yes G = 2 ±12 ±10 60 100 83 @ 20 kHz $25.25
AD8114 16 X 16 Yes G = 1 ±5 ±3 225 375 60 $54.64
AD8115 16 X 16 Yes G = 2 ±5 ±3 200 450 52 $54.64
AD8116 16 X 16 Yes G = 1 ±5 ±3 200 300 60 $79.95
AD8117 32 X 32 Yes G = 1 ±2.5 ±2 600 1,800 65 $298.54
AD8118 32 X 32 Yes G = 2 ±2.5 ±2 600 1,800 70 $298.54
AD8175 Triple 16 x 9 Yes G = 2 ±2.5 ±2 500 1,800 82 $96.14
AD8176 Triple 16 x 9 Yes G = 4 ±2.5 ±2 450 1,650 74 $96.14
AD8177 Triple 16 x 5 Yes G = 2 ±2.5 ±2 500 1,800 82 $60.21
AD8178 Triple 16 x 5 Yes G = 4 ±2.5 ±2 450 1,650 74 $60.21
ADG2128 16 x 8 No ±5 ±5 300 n/a 79 dB @ 5 MHz