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DC987B-F

Description
Amplifier IC Development Tool LTC6401-14 3GHz Fully Differential ADC D
CategoryEmbedded solution    Engineering tools    Analog and digital IC development tools    Amplifier IC development tools   
File Size207KB,5 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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DC987B-F Overview

Amplifier IC Development Tool LTC6401-14 3GHz Fully Differential ADC D

DC987B-F Parametric

Parameter NameAttribute value
MakerADI
Product CategoryAmplifier IC Development Tools
Shipping restrictionsMouser does not currently sell this product.
productDemonstration Boards
typeHigh Speed Amplifiers
Tools for assessmentLTC6401-14
Working power voltage3 V
seriesLTC6401
Factory packaging quantity1
DEMO CIRCUIT DC987 QUICK START GUIDE
DEMO CIRCUIT 987
LOW NOISE/DISTORTION DIFFERENTIAL ADC DRIVER
QUICK START GUIDE
LTC6400 and LTC6401
Low Noise/Distortion
Differential ADC Drivers
DESCRIPTION
Demonstration circuit 987 features the LTC6400 and
LTC6401 ADC Drivers. It incorporates a variety of passive
components to support configurations for varied applica-
tions. Single-ended or differential input and output configu-
rations are possible, and there is a calibration circuit to null
out the effects of other circuit components.
The LTC6400/1 is a high-speed differential amplifier with
superior distortion and noise performance, perfect for de-
manding communications transceivers, cellular base-
stations, and other high-speed signal chain applications.
The LTC6400/1 accepts single-ended or differential inputs
with almost no difference in distortion performance. One
standout feature of the LTC6400/1 is the ability to indepen-
dently adjust the output common-mode voltage without any
additional components.
Design files for this circuit board are available. Call
the LTC factory.
, LTC and LT are registered trademarks of Linear Technology Corporation.
QUICK START PROCEDURE
Table 1 shows the function of each SMA connector on the
board. Refer to Figure 1 and Table 1, and follow the proce-
dure below:
1.
Connect the power supply VCC. The power labels of VCC,
EN, and GND on the board directly correspond to the
VCC, EN, and VEE pins of the LTC6400/1, respectively.
Jumper JP1 enables or shuts down the LTC6400/1.
ance-matched to 50Ω, suitable for the input of a network
or spectrum analyzer.
Table 1: DC987 SMA Connector Descriptions
CONNECTOR
FUNCTION
J1 (+IN)
Differential Input. Use this connector to supply an input
to the DC987. Drive from a 50ohm signal source, no
external termination necessary.
J2 (-IN)
Differential Input.
Not connected by default.
Resistor
R6 can installed and R2 removed to drive the DC987
differentially.
Output Common-Mode Adjust.
By default, 1.25V is
supplied to this pin by two resistors (VCC=3V).
Over-
ride this voltage with any DC voltage source.
Output. Impedance-matched to 50 ohms, can be used
to drive a 50ohm network/spectrum analyzer input.
Differential Output.
Not connected by default.
Resistor
R12 can be installed and R14 removed for differential
output drive.
Calibration network input. Use with network analyzer to
calibrate out effects of board trace parasitics, transfor-
mers, and SMA connectors.
2.
For network analyzer use, calibrate out board and trans-
former effects using J6 and J7. There is a 1:1 impedance
transfer from J6 to J7, so external termination may be
necessary for a 50Ω match.
TP53 (VOCM)
3.
Apply an input signal to J1. A low-distortion, low
noise signal source with an external high-order filter
will yield the best performance. DC987’s input is
impedance-matched to 50Ω; no external termination
is necessary.
4.
Observe the output via J4. By default, the unfiltered out-
puts of the LTC6400/1 are used. The output is imped-
J4 (+OUT)
J5 (-OUT)
J6 (TEST IN)
J7 (TEST OUT) Calibration network output.
1

DC987B-F Related Products

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Description Amplifier IC Development Tool LTC6401-14 3GHz Fully Differential ADC D Amplifier IC Development Tool LTC6400-8 3GHz Fully Differential ADC Dr Amplifier IC Development Tool LTC6400-14 3GHz Fully Differential ADC D Amplifier IC Development Tool LTC6400-20 3GHz Fully Differential ADC D Amplifier IC Development Tool LTC6400-26 3GHz Fully Differential ADC D Amplifier IC Development Tool LTC6401-20 3GHz Fully Differential ADC D
Maker ADI ADI ADI ADI ADI ADI
Product Category Amplifier IC Development Tools Amplifier IC Development Tools Amplifier IC Development Tools Amplifier IC Development Tools Amplifier IC Development Tools Amplifier IC Development Tools
Shipping restrictions Mouser does not currently sell this product. Mouser does not currently sell this product. Mouser does not currently sell this product. Mouser does not currently sell this product. Mouser does not currently sell this product. Mouser does not currently sell this product.
product Demonstration Boards Demonstration Boards Demonstration Boards Demonstration Boards Demonstration Boards Demonstration Boards
type High Speed Amplifiers Differential Amplifiers Differential Amplifiers Differential Amplifiers Differential Amplifiers High Speed Amplifiers
Tools for assessment LTC6401-14 LTC6400CUD-8 LTC6400CUD-14 LTC6400CUD-20 LTC6400CUD-26 LTC6401-20
series LTC6401 LTC6400 LTC6400 LTC6400 LTC6400 LTC6401
Factory packaging quantity 1 1 1 1 1 1
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