Datasheet LTC6430-20 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | High Linearity Differential RF/IF Amplifier/ADC Driver |
| Seiten / Seite | 28 / 9 — PIN FUNCTIONS. GND (Pins 8, 14, 17, 23, Exposed Pad Pin 25):. +OUT (Pin … |
| Dateiformat / Größe | PDF / 2.2 Mb |
| Dokumentensprache | Englisch |
PIN FUNCTIONS. GND (Pins 8, 14, 17, 23, Exposed Pad Pin 25):. +OUT (Pin 18):. +IN (Pin 24):. –OUT (Pin 13):. –IN (Pin 7):
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LTC6430-20
PIN FUNCTIONS GND (Pins 8, 14, 17, 23, Exposed Pad Pin 25):
Ground.
+OUT (Pin 18):
Positive Amplifier Output Pin. A transformer For best RF performance, all ground pins should be con- with a center tap tied to VCC or a choke inductor tied to 5V nected to the printed circuit board ground plane. The supply is required to provide DC current and RF isolation. exposed pad (Pin 25) should have multiple via holes to For best performance select a choke with low loss and an underlying ground plane for low inductance and good high self resonant frequency (SRF). See the Applications thermal dissipation. Information section for more information.
+IN (Pin 24):
Positive Signal Input Pin. This pin has an
–OUT (Pin 13):
Negative Amplifier Output Pin. A trans- internally generated 1.8V DC bias. A DC-blocking capacitor former with a center tap tied to VCC or a choke inductor is is required. See the Applications Information section for required to provide DC current and RF isolation. For best specific recommendations. performance select a choke with low loss and high SRF.
–IN (Pin 7):
Negative Signal Input Pin. This pin has an
DNC (Pins 1 to 6, 10 to 12, 15, 19 to 21):
Do Not Connect. internally generated 1.8V DC bias. A DC-blocking capacitor Do not connect these pins, allow them to
float. Failure
is required. See the Applications Information section for
to float these pins may impair the performance of the
specific recommendations.
LTC6430-20. VCC (Pins 9, 22):
Positive Power Supply. Either or both
T_DIODE (Pin 16):
Optional. A diode which can be forward VCC pins should be connected to the 5V supply. Both VCC biased to ground with up to 1mA of current. The measured pins are internally connected within the package. Bypass voltage will be an indicator of the chip temperature. the VCC pin with 1000pF and 0.1µF capacitors. The 1000pF capacitor should be physically close to a VCC pin.
BLOCK DIAGRAM
VCC 9, 22 BIAS AND TEMPERATURE COMPENSATION +IN 20dB +OUT 24 GAIN 18 T_DIODE 16 –IN 20dB –OUT 7 13 GAIN GND 8, 14, 17, 23 AND PADDLE 25 643020 BD 643020f For more information www.linear.com/LTC6430-20 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit A Operation Applications Information Differential S Parameters Typical Applications Package Description Typical Application Related Parts
PIN FUNCTIONS GND (Pins 8, 14, 17, 23, Exposed Pad Pin 25):
Ground.
+OUT (Pin 18):
Positive Amplifier Output Pin. A transformer For best RF performance, all ground pins should be con- with a center tap tied to VCC or a choke inductor tied to 5V nected to the printed circuit board ground plane. The supply is required to provide DC current and RF isolation. exposed pad (Pin 25) should have multiple via holes to For best performance select a choke with low loss and an underlying ground plane for low inductance and good high self resonant frequency (SRF). See the Applications thermal dissipation. Information section for more information.
+IN (Pin 24):
Positive Signal Input Pin. This pin has an
–OUT (Pin 13):
Negative Amplifier Output Pin. A trans- internally generated 1.8V DC bias. A DC-blocking capacitor former with a center tap tied to VCC or a choke inductor is is required. See the Applications Information section for required to provide DC current and RF isolation. For best specific recommendations. performance select a choke with low loss and high SRF.
–IN (Pin 7):
Negative Signal Input Pin. This pin has an
DNC (Pins 1 to 6, 10 to 12, 15, 19 to 21):
Do Not Connect. internally generated 1.8V DC bias. A DC-blocking capacitor Do not connect these pins, allow them to
float. Failure
is required. See the Applications Information section for
to float these pins may impair the performance of the
specific recommendations.
LTC6430-20. VCC (Pins 9, 22):
Positive Power Supply. Either or both
T_DIODE (Pin 16):
Optional. A diode which can be forward VCC pins should be connected to the 5V supply. Both VCC biased to ground with up to 1mA of current. The measured pins are internally connected within the package. Bypass voltage will be an indicator of the chip temperature. the VCC pin with 1000pF and 0.1µF capacitors. The 1000pF capacitor should be physically close to a VCC pin.
BLOCK DIAGRAM
VCC 9, 22 BIAS AND TEMPERATURE COMPENSATION +IN 20dB +OUT 24 GAIN 18 T_DIODE 16 –IN 20dB –OUT 7 13 GAIN GND 8, 14, 17, 23 AND PADDLE 25 643020 BD 643020f For more information www.linear.com/LTC6430-20 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit A Operation Applications Information Differential S Parameters Typical Applications Package Description Typical Application Related Parts