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AD8366 Fiches technique(PDF) 10 Page - Analog Devices |
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AD8366 Fiches technique(HTML) 10 Page - Analog Devices |
10 / 13 page AD8366 Preliminary Technical Data Rev. PrC | Page 10 of 13 Table 4. Evaluation Board Configuration Options Components Function Default Conditions C1, C13 to C16, R3 to R6 Power Supply Decoupling. Nominal supply decoupling consists a 0.1μF capacitor to ground followed by 0.01 μF capacitors to ground positioned as close to the device as possible. C1 = 0.1μF (size 0603) C13 to C16 = 0.01 μF (size 0402) R3 to R6 = 0 Ω (size 0603) T1, T2, C5,C18,C20,C21, R12 to R21, R44 to R48, R50, R54, R58, R62, R63 Input Interface. The default configuration of the Eval board is for single ended operation. T1 and T2 are 4:1 impedance ratio baluns to transform a 50 Ω single-ended input into a 200 Ω-balanced differential signal. R12 to R14 and R15, R16, and R19 are populated for appropriate balun interface. R44 to R48 and R50, R54, R58, R62, andR63 are provided for generic placement of matching components. C5 to C20 are balun decoupling capacitors. R17, R18, R20, R21 can be populated with 0 Ω and the balun interfacing resistors can be removed to bypass T1 and T2 for differential interfacing. T1, T2 = ADT4-6T+ (Mini-Circuits) C5,C20 = 0.1 μF (size 0402) C18,C21 = Do not install R12 to R16, R19, R44 to R47= 0 Ω (size 0402) R17, R18, R20, R21,R48, R50, R54, R58, R62, andR63 = open (size 0402) T3, T4, C24 to C27, R29 to R31,R33 to R39,R65,R67 to R74, R80 Output Interface. The default configuration of the Eval board is for single ended operation. T3 and T4 are 4:1 impedance ratio baluns to transform a 50 Ω single-ended output into a 200 Ω-balanced differential load. R29 to R31, R33, R38, R39 are populated for appropriate balun interface. R65, R67 to R74, and R80 are provided for generic placement of matching components. C24, C25 are balun decoupling capacitors. R34 to R37 can be populated with 0 Ω and the balun interfacing resistors can be removed to bypass T3 and T4 for differential interfacing. T3, T4 = ADT4-6T+ (Mini-Circuits) C24,C25 = 0.1 μF (size 0402) C26,C27 = Do not install R29 to R31, R33, R38, R39, R65, R67, R68, R80 = 0 Ω (size 0402) R34 to R37, R69 to R74= open (size 0402) S1, S5, S7, R53, R57, R79, C29, C30, C31 Enable Interface. -Device Enable. The AD8366 is enabled by applying a logic high voltage to the ENBL pin. The device is enabled when the switch S1 is set in the down position (HIGH), connecting the ENBL pin to VPOS. -Data Enable. DENA and DENB are used to enable the data path for Channel A and Channel B respectively. Channel A is enabled when the switch S5 is set in the down position (HIGH), connecting the DENA pin to VPOS. Likewise, Channel B is enabled when the switch S7 is set in the down position (HIGH), connecting the DENB pin to VPOS. Both channels are disabled by setting the switches to the up position, connecting the DENA and DENB pins to GND. S1,S5,S7 = installed R53, R57= 5.1kΩ (size 0603) R79 = 10kΩ (size 0402) C30=0.01uF (size 0402) C29, C31=1500pF (size 0402) S2,S3,S4,S6,S8,S9, S10 R26, R32, R40-R43, R61,R64 C23, C33 U1 Serial/Parallel Interface Control. SENB is used to set the data control either in parallel or serial mode. Parallel Interface is enabled when the switch S4 is up position (LOW). Serial interface enabled when S4 is in the down position (HIGH). For SENB pulled LOW, BIT0 (switch S9) sets 0.25dB Gain BIT1 (switch S2) sets 0.5dB Gain BIT2 (switch S3) sets 1dB Gain BIT3 (switch S6)sets 2dB Gain BIT4 (switch S8)sets 4dB Gain BIT5 (switch S10) sets 8dB Gain For SENB pulled HIGH, BIT0 becomes a chip-select (CS), BIT1 becomes serial data input, SDAT, and BIT2 becomes serial clock, SCLK. BIT3-BIT5 are not used in the serial mode. S2,S3,S4, S6, S8, S9, 10 = installed R26=698 kΩ (size 0603) R32, R40-R43, R61,R64 = 5.1kΩ (size 0603) C23, C33 = 1500pF (size 0603) U1= SN74LVC2G14, Clock Chip S11, S12, C9, C10 DC Offset Correction Loop Compensation. The DC offset correction loop is enabled (HIGH) with switch S11 and S12 for channel A and channel B respectively. When enabled, the capacitor is connected to circuit common. When disabled (LOW), the OFSA/OFSB pins are tied to common. S11, S12 = installed C9, C10=8200pF (size 0402) |
Numéro de pièce similaire - AD8366 |
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Description similaire - AD8366 |
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