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GS9015B Datasheet(PDF) 4 Page - Gennum Corporation |
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GS9015B Datasheet(HTML) 4 Page - Gennum Corporation |
4 / 13 page 4 of 13 NOT RECOMMENDED FOR NEW DESIGNS 32467 - 0 GS9015B PIN DESCRIPTIONS PIN NO. SYMBOL TYPE DESCRIPTION 1VEE1 Power Supply. Most negative power supply connection. 2VEE1 Power Supply. Most negative power supply connection. 3VEE1 Power Supply. Most negative power supply connection. 4VEE1 Power Supply. Most negative power supply connection. 5,6 DDI/DDI Input Direct Data Inputs (true and inverse). Pseudo-ECL, differential serial data inputs. They may be directly driven from true ECL drivers when VEE = -5V and VCC = 0 V. 7VCC1 Power Supply. Most positive power supply connection. (Phase Detector, Carrier Detect). 8, 9 VEE1 Power Supply. Most negative power supply connection. 10 ƒ/2 EN Input ƒ/2 Enable-TTL compatible input used to enable the divide by 2 function. 11 VEE3 Power Supply. Most negative power supply connection. (VCO, MUX, Standard Select) 12 LOOP FILT Loop Filter. Node for connecting the loop filter components. 13 RVCO0 Input VCO Resistor 0. Analog current input used to set the centre frequency of the VCO when the two Standard Select bits (pins 20 and 21) are set LOW. A resistor is connected from this pin to VEE. 14 RVCO1 Input VCO Resistor 1. Analog current input used to set the centre frequency of the VCO when Standard Select bit 0 (pin 20) is set HIGH and bit 1 (pin 21) is set LOW. A resistor is connected from this pin to VEE. 15 RVCO2 Input VCO Resistor 2. Analog current input used to set the centre frequency of the VCO when Standard Select bit 0 (pin 20) is set LOW and bit 1 (pin 21) is set HIGH. A resistor is connected from this pin to VEE. 16 VEE3 Power Supply. Most negative power supply connection. 17 R VCO3 Input VCO Resistor 3. Analog current input used to set the centre frequency of the VCO when the two Standard Select bits (pins 20 and 21) are set HIGH. A resistor is connected from this pin to V EE . Fig. 2 GS9015B Pin Connections SD0 SD0 SC0 SC0 SS1 SS0 CD DDI DDI VCC1 VEE1 VEE1 VEE1 VEE1 VEE1 VEE1 VEE1 VEE2 VCC3 GS9015B TOP VIEW LOOP RVCO0 RVCO1 RVCO2 VEE3 RVCO3 VCC2 FILT 25 24 23 22 21 20 19 5 6 7 8 9 10 11 12 13 14 15 16 17 18 4 3 2 28 27 26 ƒ/2 EN VEE3 |
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