LTC6400CUD-14#PBF Linear Technology, LTC6400CUD-14#PBF Datasheet

IC ADC DRIVER DIFF 16-QFN

LTC6400CUD-14#PBF

Manufacturer Part Number
LTC6400CUD-14#PBF
Description
IC ADC DRIVER DIFF 16-QFN
Manufacturer
Linear Technology
Type
ADC Driverr
Datasheet

Specifications of LTC6400CUD-14#PBF

Applications
Data Acquisition
Mounting Type
Surface Mount
Package / Case
16-WQFN Exposed Pad
No. Of Amplifiers
1
Input Offset Voltage
3mV
Gain Db Max
14dB
Bandwidth
2.4GHz
Slew Rate
4800V/µs
Supply Voltage Range
2.85V To 3.5V
Supply Current
85mA
Amplifier Case Style
QFN
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC6400CUD-14#PBFLTC6400CUD-14
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC6400CUD-14#PBF
Manufacturer:
Linear Technology
Quantity:
135
Company:
Part Number:
LTC6400CUD-14#PBF
Manufacturer:
LT凌特厂
Quantity:
20 000
Company:
Part Number:
LTC6400CUD-14#PBF/
Manufacturer:
LT
Quantity:
1 132
Company:
Part Number:
LTC6400CUD-14#PBF/IUD
Manufacturer:
LT
Quantity:
3 364
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
2.4GHz –3dB Bandwidth
Fixed Gain of 5V/V (14dB)
–97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)
–66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm)
1.1nV/√Hz Internal Op Amp Noise
2.5nV/√Hz Total Input Noise
7.5dB Noise Figure
Differential Inputs and Outputs
200Ω Input Impedance
2.85V to 3.5V Supply Voltage
85mA Supply Current (255mW)
1V to 1.6V Output Common Mode Voltage,
Adjustable
DC- or AC-Coupled Operation
Max Differential Output Swing 4.8V
Small 16-Lead 3mm × 3mm × 0.75mm QFN Package
Differential ADC Driver
Differential Driver/Receiver
Single Ended to Differential Conversion
IF Sampling Receivers
SAW Filter Interfacing
0.1μF
C2
V
IN
68.5Ω
R1
29Ω
1000pF
R2
C1
0.1μF
0.1μF
C3
C4
Single-Ended to Differential ADC Driver
3.3V
+IN
–IN
V
V –
+
LTC6400-14
V
OCM
+OUT
–OUT
1.25V
C5
0.1μF
COILCRAFT
0603CS
100Ω
15Ω
15Ω
R
R
P-P
R3
S1
S2
24nH
L1
C
33pF
C
33pF
C
33pF
F2
F1
F3
10Ω
10Ω
R
R
S3
S4
16-Bit ADC
130Msps
LTC2208
AIN
AIN
DESCRIPTION
The LTC
targeted at processing signals from DC to 300MHz. The
part has been specifi cally designed to drive 12-, 14- and
16-bit ADCs with low noise and low distortion, but can also
be used as a general-purpose broadband gain block.
The LTC6400-14 is easy to use, with minimal support
circuitry required. The output common mode voltage is
set using an external pin, independent of the inputs, which
eliminates the need for transformers or AC-coupling ca-
pacitors in many applications. The gain is internally fi xed
at 14dB (5V/V).
The LTC6400-14 saves space and power compared to
alternative solutions using IF gain blocks and transformers.
The LTC6400-14 is packaged in a compact 16-lead 3mm ×
3mm QFN package and operates over the – 40°C to 85°C
temperature range.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
+
Distortion Differential ADC
LTC2208
3.3V
V
V
CM
DD
64014 TA01a
2.4GHz Low Noise, Low
®
6400-14 is a high-speed differential amplifi er
Driver for 300MHz IF
70
60
50
40
30
20
10
0
0
Equivalent Output IP3 vs
50
FREQUENCY (MHz)
100
Frequency
LTC6400-14
150
200
(NOTE 7)
250
640020 TA01b
300
640014fb
1

Related parts for LTC6400CUD-14#PBF

LTC6400CUD-14#PBF Summary of contents

Page 1

... The LTC6400-14 is packaged in a compact 16-lead 3mm × P-P 3mm QFN package and operates over the – 40°C to 85°C temperature range. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3.3V C ...

Page 2

... Maximum Junction Temperature........................... 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC6400CUD-14#PBF LTC6400CUD-14#TRPBF LTC6400IUD-14#PBF LTC6400IUD-14#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...

Page 3

DC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T otherwise noted. SYMBOL PARAMETER Input/Output Characteristic G Gain DIFF TC Gain Temperature Drift GAIN V Output Swing Low SWINGMIN V Output Swing High SWINGMAX V Maximum Differential Output Swing ...

Page 4

LTC6400-14 AC ELECTRICAL CHARACTERISTICS ENABLE = 0V unless otherwise noted. L SYMBOL PARAMETER –3dBBW –3dB Bandwidth 0.1dBBW Bandwidth for 0.1dB Flatness 0.5dBBW Bandwidth for 0.5dB Flatness 1/f 1/f Noise Corner SR Slew Rate t 1% Settling Time S1% ...

Page 5

AC ELECTRICAL CHARACTERISTICS ENABLE = 0V unless otherwise noted. L SYMBOL PARAMETER 140MHz Input Signal HD2,140M/HD3,140M Second/Third Order Harmonic Distortion IMD3,140M Third-Order Intermodulation (f1 = 139.5MHz f2 = 140.5MHz) OIP3,140M Third-Order Output Intercept Point (f1 = 139.5MHz f2 ...

Page 6

LTC6400-14 AC ELECTRICAL CHARACTERISTICS ENABLE = 0V unless otherwise noted. L SYMBOL PARAMETER 300MHz Input Signal HD2,300M/HD3,300M Second/ Third-Order Harmonic Distortion IMD3,300M Third-Order Intermodulation (f1 = 299.5MHz f2 = 300.5MHz) OIP3,300M Third-Order Output Intercept Point (f1 = 299.5MHz ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Frequency Response TEST CIRCUIT 100 1000 3000 FREQUENCY (MHz) 640014 G01 Input and Output Refl ection and Reverse Isolation vs Frequency 0 –10 –20 ...

Page 8

LTC6400-14 TYPICAL PERFORMANCE CHARACTERISTICS Overdrive Recovery Response 87.5Ω PER OUTPUT L TEST CIRCUIT + –IN 0 –1 +OUT –2 –3 –OUT –4 – 100 TIME (ns) 640014 ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS Equivalent Output 1dB Compression Point vs Frequency DIFFERENTIAL INPUT 375Ω L TEST CIRCUIT A (NOTE 100 150 200 250 FREQUENCY (MHz) 640014 G16 Turn-On Time 3.5 ...

Page 10

LTC6400-14 PIN FUNCTIONS + V (Pins 1, 3, 10): Positive Power Supply (Normally tied 3.3V). All three pins must be tied to the same voltage. Bypass each pin with 1000pF and 0.1μF capacitors as close to the ...

Page 11

APPLICATIONS INFORMATION Circuit Operation The LTC6400- low noise and low distortion fully differential op amp/ADC driver with: • Operation from DC to 2.4GHz (–3dB bandwidth) • Fixed gain of 5V/V (14dB) • Differential input impedance 200Ω • Differential ...

Page 12

LTC6400-14 APPLICATIONS INFORMATION R S 0.1μF 50Ω 100Ω 1000Ω – IN+ OUT– 68.5Ω 14 +IN 0.1μF 15 –IN IN– OUT+ 0.1μF 1000Ω 100Ω 16 – 29Ω Figure 3. Input Termination for ...

Page 13

APPLICATIONS INFORMATION which is dominated by a low pass fi lter connected to the V pin and is aimed to reduce common mode noise OCM generation at the outputs. The internal common mode feedback loop has a –3dB bandwidth around ...

Page 14

... C7 0.1μF C23 C5 0.1μF 0.1μF R21 R22 (1) (1) C24 C6 0.1μF 0.1μ LTC6400CUD-14 OPEN OPEN MINI-CIRCUITS TCM4-19 (1:4) C18 0.1μF R10 R14 86.6Ω (1) T2 R12 R8 C4 TCM 4- (1) 0.1μF 2 SL2 R7 R11 (2) (1) ...

Page 15

... RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... SNR = 82dB at 3V Supply, 4th Order Filter SNR = 82dB at 3V Supply, 4th Order Filter SNR = 76dB at 3V Supply, 4th Order Filter SNR = 76dB at 3V Supply, 4th Order Filter www.linear.com ● – 640014fb LT 0908 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 ...

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