LTC6401IUD-26#PBF Linear Technology, LTC6401IUD-26#PBF Datasheet

IC ADC DRIVER DIFF 16-QFN

LTC6401IUD-26#PBF

Manufacturer Part Number
LTC6401IUD-26#PBF
Description
IC ADC DRIVER DIFF 16-QFN
Manufacturer
Linear Technology
Type
ADC Driverr
Datasheet

Specifications of LTC6401IUD-26#PBF

Applications
Data Acquisition
Mounting Type
Surface Mount
Package / Case
16-WQFN Exposed Pad
No. Of Amplifiers
1
Input Offset Voltage
2.5mV
Gain Db Max
26dB
Bandwidth
1.6GHz
Slew Rate
3300V/µs
Supply Voltage Range
2.85V To 3.5V
Supply Current
45mA
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:
LTC6401IUD-26#PBFLTC6401IUD-26
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC6401IUD-26#PBFLTC6401IUD-26
Manufacturer:
LTNEAR
Quantity:
20 000
Company:
Part Number:
LTC6401IUD-26#PBF
Manufacturer:
Linear Technology
Quantity:
135
FEATURES
APPLICATIONS
TYPICAL APPLICATION
0.1μF
V
1.6GHz –3dB Bandwidth
Fixed Gain of 20V/V (26dB)
–85dBc IMD3 at 70MHz (Equivalent OIP3 = 46.5dBm)
–72dBc IMD3 at 140MHz (Equivalent OIP3 = 40dBm)
1nV/√ ⎯ H ⎯ z Internal Op Amp Noise
1.5nV/√ ⎯ H ⎯ z Total Input Referred Noise
6.8dB Noise Figure
Differential Inputs and Outputs
50Ω Input Impedance
2.85V to 3.5V Supply Voltage
45mA Supply Current (135mW)
1V to 1.6V Output Common Mode, Adjustable
DC- or AC-Coupled Operation
Max Differential Output Swing 4.7V
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
IN
150Ω
37.4Ω
1000pF
Single-Ended to Differential ADC Driver at 140MHz IF
0.1μF
0.1μF
3.3V
+IN
–IN
V
+
LTC6401-26
V –
LTC6401-26
V
V
OCM
OCM
+OUT
–OUT
1.25V
0.1μF
COILCRAFT
0603CS
P-P
100Ω
15Ω
15Ω
24nH
L1
33pF
33pF
33pF
10Ω
10Ω
16-BIT ADC
130Msps
LTC2208
DESCRIPTION
ADC Driver for DC-140MHz
The LTC
targeted at processing signals from DC to 140MHz. 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 LTC6401-26 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 of transformers or AC-coupling ca-
pacitors in many applications. The gain is internally fi xed
at 26dB (20V/V).
The LTC6401-26 saves space and power compared to
alternative solutions using IF gain blocks and transform-
ers. The LTC6401-26 is packaged in a compact 16-lead
3mm × 3mm QFN package and operates over the –40°C
to 85°C temperature range.
All other trademarks are the property of their respective owners.
AIN
AIN
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Low Distortion Differential
+
LTC2208
3.3V
V
V
DD
CM
®
6401-26 is a high-speed differential amplifi er
640126 TA01a
1.6GHz Low Noise,
60
50
40
30
20
10
0
0
Equivalent OIP3 vs Frequency
50
LTC6401-26
FREQUENCY (MHz)
100
DIFFERENTIAL INPUT
(NOTE 7)
150
NO R
R
L
640126 TA01b
= 200Ω
L
640126f
1
200

Related parts for LTC6401IUD-26#PBF

LTC6401IUD-26#PBF Summary of contents

Page 1

... The LTC6401-26 is packaged in a compact 16-lead 3mm × 3mm QFN package and operates over the –40°C to 85°C temperature range. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3.3V 33pF 15Ω ...

Page 2

... TAPE AND REEL LTC6401CUD-26#PBF LTC6401CUD-26#TRPBF LCDG LTC6401IUD-26#PBF LTC6401IUD-26#TRPBF LCDG Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. ...

Page 3

DC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T otherwise noted. SYMBOL PARAMETER Input/Output Characteristic (+IN, –IN, +OUT, –OUT, +OUTF, –OUTF) G Gain DIFF TC Gain Temperature Drift GAIN V Output Swing Low SWINGMIN V Output Swing High ...

Page 4

LTC6401-26 AC ELECTRICAL CHARACTERISTICS ⎯ E ⎯ N ⎯ A ⎯ B ⎯ L ⎯ 0V unless otherwise noted. L SYMBOL PARAMETER –3dBBW –3dB Bandwidth 0.5dBBW Bandwidth for 0.5dB Flatness 0.1dBBW Bandwidth for 0.1dB Flatness 1/f ...

Page 5

AC ELECTRICAL CHARACTERISTICS ⎯ E ⎯ N ⎯ A ⎯ B ⎯ L ⎯ 0V unless otherwise noted. L SYMBOL PARAMETER 140MHz Input Signal HD2,140M/ Second/Third Order Harmonic Distortion HD3,140M IMD3,140M Third-Order Intermodulation (f1 = 139.5MHz ...

Page 6

LTC6401-26 TYPICAL PERFORMANCE CHARACTERISTICS Frequency Response TEST CIRCUIT 100 FREQUENCY (MHz) S21 Phase and Group Delay vs Frequency 0 –50 –100 PHASE –150 –200 0 200 400 600 FREQUENCY (MHz) Input ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Noise Figure and Input Referred Noise Voltage vs Frequency NOISE FIGURE 100 FREQUENCY (MHz) Large Signal Transient Response 2 87.5Ω PER OUTPUT L TEST CIRCUIT B 2.0 +OUT ...

Page 8

LTC6401-26 TYPICAL PERFORMANCE CHARACTERISTICS Third Order Intermodulation Distortion vs Frequency –40 DIFFERENTIAL INPUT COMPOSITE OUT P-P –50 –60 –70 –80 –90 –100 200Ω L –110 0 50 100 150 FREQUENCY (MHz) 640126 ...

Page 9

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 capaci- tors as close to the ...

Page 10

LTC6401-26 APPLICATIONS INFORMATION Circuit Operation The LTC6401- low noise and low distortion fully differential op amp/ADC driver with: • Operation from DC to 1.6GHz –3dB bandwidth • Fixed gain of 20V/V (26dB) • Differential input impedance 50Ω • ...

Page 11

APPLICATIONS INFORMATION R S 0.1μF 50Ω 25Ω 500Ω – IN+ OUT– 150Ω 14 +IN 0.1μF 15 –IN IN– OUT+ 0.1μF 25Ω 500Ω 16 –IN 37.4Ω Figure 3. Input Termination for Single-Ended 50Ω Input ...

Page 12

LTC6401-26 APPLICATIONS INFORMATION LTC6401-26 25Ω 500Ω 12.5Ω 13 +IN +OUT 8 50Ω IN+ OUT– +OUTF 7 14 +IN 1.7pF 50Ω 15 –IN IN– OUT+ –OUTF 6 25Ω 500Ω 12.5Ω 16 –IN –OUT 5 640126 F06 Figure 6. LTC6401-26 with 165MHz ...

Page 13

TYPICAL APPLICATION R2 (1) R6 0Ω (2) (2) + (1) 0dB –IN (2) R1 0Ω R19 1.5k TP5 V OCM R20 1k T3 R17 TCM 4:19 0Ω ...

Page 14

LTC6401-26 TYPICAL APPLICATION +IN 24.9Ω PORT 1 (50Ω) 0.1μF +IN 1/2 AGILENT –IN E5O71A –IN 24.9Ω PORT 2 (50Ω) 0.1μF 1000pF 14 Test Circuit B, 4-Port Analysis + V 1000pF 0.1μF V – + ENABLE BIAS ...

Page 15

... ON THE TOP AND BOTTOM OF PACKAGE 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. UD Package 16-Lead Plastic QFN (3mm × ...

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 ● – 640126f LT 0108 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 ...

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