for further information contact your local stmicroelectronics sales office. january 2013 doc id 024116 rev 1 1/10 10 EVAL-RHF350V1 EVAL-RHF350V1 evaluation board data brief features mounted engineering model rhf350k1: rad-hard, 550 mhz, operational amplifier (see rhf350 datasheet for further information) mounted components (ready-to-use) material: two-layered fr-4 pcb thickness: 1.6 mm copper thickness: 35 m analog connections: sma supply connections: banana 2 mm description this data brief describes the EVAL-RHF350V1 evaluation board. this evaluation board is a ready-to-use, configurable hardware which allows designers to efficiently test a target device. a unique pcb is used in different configurations to support the radiation-hardened (rad-hard), operational amplifier devices. this document shows the components incorporated on the EVAL-RHF350V1 evaluation board and suggests several ways to use the board. the EVAL-RHF350V1 evaluation board is intended only for evaluation purposes. table 1. evaluation board summary evaluation board part number device part number operation amplifier EVAL-RHF350V1 rhf350 550 mhz precision signal conditioning www.st.com
contents EVAL-RHF350V1 2/10 doc id 024116 rev 1 contents 1 bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 device pin connections and desc ription . . . . . . . . . . . . . . . . . . . . . . . . 4 3 evaluation board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 pcb print out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 evaluation board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EVAL-RHF350V1 bill of material doc id 024116 rev 1 3/10 1 bill of material table 2. bill of material designator footprint part type description c1 1210 100 f bypass ceramic capacitor on v cc c3 0805 c4 c6 1210 ic1 flat 8 rhf350 dut j1 banana 2 mm red banana 2 mm supply connectors j2 black j3 blue j4 sma sma sma connector j5 j6 j7 j8 r1 0603 50 - 1 % smd resistor r2 r4 300 - 1 % r6 r8 nc r9 0 c8 nc (1) 1. nc = not connected - c2 0805 c5 c7 0603 r3 r5 r7
device pin connections and description EVAL-RHF350V1 4/10 doc id 024116 rev 1 2 device pin connections and description figure 1. rhf350 pin connections table 3. rhf350 pin description name pin number description nc 1, 5, 8 non connected pins in- 2 negative input pin in+ 3 positive input pin -v cc 4 negative supply out 6 output pin +v cc 7 positive supply " . / $ * / * / 7 $ $ / $ 7 $ $ 0 6 5 / $
EVAL-RHF350V1 evaluation board schematic doc id 024116 rev 1 5/10 3 evaluation board schematic figure 2. EVAL-RHF350V1 full layout schematic - - 5 5 q f 5 & q ) & q ) 9 & & 9 & & , 1 2 8 7 5 5 q f 5 q f & q f & q f 5 q f - 5 , 1 5 5 9 & & 9 & & & q f & q f & & - 9 & & - * 1 ' - 9 & & 9 & & 9 & & ? ) ? ) ? ? * $ 0 6 & %
pcb print out EVAL-RHF350V1 6/10 doc id 024116 rev 1 4 pcb print out the pcb is a two-layered fr-4 material whic h is 1.6 mm thick. the copper thickness is 35 m . figure 3. front layer figure 4. front drawing figure 5. bottom layer figure 6. bottom drawing
EVAL-RHF350V1 evaluation board description doc id 024116 rev 1 7/10 5 evaluation board description the pcb is designed for 50-ohm generators and receivers. a 50-ohm calibration path can be used for high speed products. capacitor c8 can be used to load the output. ca pacitor c7 and resistor r5 can be used to stabilize the product. pi resistors r7, r2, and r8 are used to adap t impedance between the output load and the hardware tool. for example, to load the device under test (dut) with 150 when the analyzer is 50 input impedance, use the following equat ions for each respective resistor: r7 = 2.2 k r2 = 130 r8 = 82 . a 100-nf and a 100- f capacitor are soldered onto each supply. a third supply place is kept free in case an additional bypass capacitor is needed. resistors (r) mounted on the board are placed to get a positive gain of two by the dut as shown in figure 7 . figure 7. positive gain of two schematic - - 5 5 & q ) & q ) 9 & & 9 & & , 1 2 8 7 5 5 5 9 & & 9 & & ? ? ? * $ 0 6 & %
evaluation board description EVAL-RHF350V1 8/10 doc id 024116 rev 1 the layout in figure 8 allows the dut to be tested with a negative gain. figure 8. negative gain schematic other configurations such as an integrator or a differentiator can also be used. 9 & & & q ) 9 & & 9 & & 9 & & 5 5 & q ) 5 5 - - 2 8 7 , 1 * $ 0 6 & %
EVAL-RHF350V1 revision history doc id 024116 rev 1 9/10 6 revision history table 4. document revision history date revision changes 25-jan-2013 1 initial release.
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