Datasheet LTC6400-26 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 1.9GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz |
| Pages / Page | 16 / 9 — PIN FUNCTIONS. V+ (Pins 1, 3, 10):. –OUTF, +OUTF (Pins 6, 7):. ENABLE … |
| File Format / Size | PDF / 231 Kb |
| Document Language | English |
PIN FUNCTIONS. V+ (Pins 1, 3, 10):. –OUTF, +OUTF (Pins 6, 7):. ENABLE (Pin 11):. VOCM (Pin 2):. +IN (Pins 13, 14):
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Text Version of Document
LTC6400-26
PIN FUNCTIONS V+ (Pins 1, 3, 10):
Positive Power Supply (Normally tied
–OUTF, +OUTF (Pins 6, 7):
Filtered Outputs. These pins to 3V or 3.3V). All three pins must be tied to the same have 50Ω series resistors and a 2.7pF shunt capacitor. voltage. Bypass each pin with 1000pF and 0.1μF capaci-
ENABLE (Pin 11):
This pin is a logic input referenced to tors as close to the pins as possible. VEE. If low, the part is enabled. If high, the part is disabled
VOCM (Pin 2):
This pin sets the output common mode and draws very low standby current while the internal op voltage. An 0.1μF external bypass capacitor is recom- amp has high output impedance. mended.
+IN (Pins 13, 14):
Positive Input. Pins 13 and 14 are
V– (Pins 4, 9, 12, 17):
Negative Power Supply. All four internally shorted together. pins must be connected to same voltage/ground.
–IN (Pins 15, 16):
Negative Input. Pins 15 and 16 are
–OUT, +OUT (Pins 5, 8):
Unfi ltered Outputs. These pins internally shorted together. have series 12.5Ω resistors ROUT.
Exposed Pad (Pin 17):
V–. The Exposed Pad must be connected to same voltage/ground as pins 4, 9, 12.
BLOCK DIAGRAM
V– ENABLE V+ V– 12 11 10 9 BIAS CONTROL RG RF ROUT +IN +OUT 25Ω 500Ω 12.5Ω 13 8 RFILT +OUTF +IN 50Ω IN+ OUT– 7 14 C R FILT FILT –IN 2.7pF –OUTF 50Ω 15 6 IN– OUT+ RG RF ROUT –IN –OUT 25Ω 500Ω 12.5Ω 16 5 2k COMMON MODE CONTROL 5.3pF 640026 BD 1 2 3 4 V+ VOCM V+ V– 640026fa 9
PIN FUNCTIONS V+ (Pins 1, 3, 10):
Positive Power Supply (Normally tied
–OUTF, +OUTF (Pins 6, 7):
Filtered Outputs. These pins to 3V or 3.3V). All three pins must be tied to the same have 50Ω series resistors and a 2.7pF shunt capacitor. voltage. Bypass each pin with 1000pF and 0.1μF capaci-
ENABLE (Pin 11):
This pin is a logic input referenced to tors as close to the pins as possible. VEE. If low, the part is enabled. If high, the part is disabled
VOCM (Pin 2):
This pin sets the output common mode and draws very low standby current while the internal op voltage. An 0.1μF external bypass capacitor is recom- amp has high output impedance. mended.
+IN (Pins 13, 14):
Positive Input. Pins 13 and 14 are
V– (Pins 4, 9, 12, 17):
Negative Power Supply. All four internally shorted together. pins must be connected to same voltage/ground.
–IN (Pins 15, 16):
Negative Input. Pins 15 and 16 are
–OUT, +OUT (Pins 5, 8):
Unfi ltered Outputs. These pins internally shorted together. have series 12.5Ω resistors ROUT.
Exposed Pad (Pin 17):
V–. The Exposed Pad must be connected to same voltage/ground as pins 4, 9, 12.
BLOCK DIAGRAM
V– ENABLE V+ V– 12 11 10 9 BIAS CONTROL RG RF ROUT +IN +OUT 25Ω 500Ω 12.5Ω 13 8 RFILT +OUTF +IN 50Ω IN+ OUT– 7 14 C R FILT FILT –IN 2.7pF –OUTF 50Ω 15 6 IN– OUT+ RG RF ROUT –IN –OUT 25Ω 500Ω 12.5Ω 16 5 2k COMMON MODE CONTROL 5.3pF 640026 BD 1 2 3 4 V+ VOCM V+ V– 640026fa 9
