ltc6404cud-2-trpbf Linear Technology Corporation, ltc6404cud-2-trpbf Datasheet

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ltc6404cud-2-trpbf

Manufacturer Part Number
ltc6404cud-2-trpbf
Description
600mhz, Low Noise, Ac Precision Fully Differential Input/output Ampli?er/driver
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
APPLICATIONS
TYPICAL APPLICATION
Fully Differential Input and Output
Low Noise: 1.5nV/√Hz Input-Referred
Very Low Distortion (2V
Closed loop –3dB Bandwidth: 600MHz
Slew Rate: 450V/μs
Adjustable Output Common Mode Voltage
Rail-to-Rail Output Swing
Input Range Extends to Ground
High Output Current: 65mA (Typ)
2.7V to 5.25V Supply Voltage Range
Low Power Shutdown
Tiny 3mm × 3mm × 0.75mm 16-Pin QFN Package
Differential Input A/D Converter Driver
Single-Ended to Differential Conversion/Amplifi cation
Common Mode Level Translation
Low Voltage, Low Noise, Signal Processing
–92dBc at 10MHz
–100dBc at 1MHz
Single-Ended Input to Differential Output with Common Mode Level Shifting
P-P
, R
L
GENERATOR
= 100Ω):
SIGNAL
V
S
50Ω
0V
2V
0.1μF
P-P
80.6Ω
1.5VDC
93.1Ω
124Ω
Input/Output Amplifi er/Driver
AC Precision Fully Differential
DESCRIPTION
The LTC
distortion, fully differential input/output amplifi er optimized
for 3V, single supply operation. The LTC6404-1 is unity
gain stable and has a closed-loop bandwidth extending
from DC to 600MHz. In addition to the normal unfi ltered
outputs (OUT
built-in 88.5MHz differential single-pole lowpass fi lter
(OUTF
1.5nV/√Hz makes the LTC6404-1 uniquely able to drive
state-of-the-art 14- to 18-bit ADCs while operating on the
same supply voltage, saving system cost and power. The
LTC6404-1 is characterized for supplies as low as 2.7V. It
draws only 27.3mA, and has a hardware shutdown feature
which reduces current consumption to 250μA.
The LTC6404-1 is available in a compact 3mm × 3mm
16-pin leadless QFN package and operates over a –40°C
to 125°C temperature range.
All other trademarks are the property of their respective owners.
+
V
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
OCM
3V
+
, and OUTF
100Ω
100Ω
®
0.1μF
6404-1 is an AC precision, very low noise, low
64041 TA01
+
600MHz, Low Noise,
and OUT
1V
1V
P-P
P-P
). An input referred voltage noise of
1.5VDC
1.5VDC
), the LTC6404-1 features a
LTC6404-1
64041f
1

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ltc6404cud-2-trpbf Summary of contents

Page 1

... The LTC6404-1 is available in a compact 3mm × 3mm 16-pin leadless QFN package and operates over a –40°C to 125°C temperature range. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 2V P-P ...

Page 2

... Storage Temperature Range ................... –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC6404CUD-1#PBF LTC6404CUD-1#TRPBF LTC6404IUD-1#PBF LTC6404IUD-1#TRPBF LTC6404HUD-1#PBF LTC6404HUD-1#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

LTC6404-1 FAMILY DC ELECTRICAL CHARACTERISTICS which apply over the full operating temperature range, otherwise specifi cations are Mid-Supply OPEN 100Ω, R ⎯ S ⎯ H ⎯ D ⎯ – + ...

Page 4

LTC6404-1 LTC6404-1 FAMILY DC ELECTRICAL CHARACTERISTICS which apply over the full operating temperature range, otherwise specifi cations are Mid-Supply OPEN 100Ω, R ⎯ S ⎯ H ⎯ D ⎯ – ...

Page 5

LTC6404-1 AC ELECTRICAL CHARACTERISTICS over the full operating temperature range, otherwise specifi cations are OPEN, unless otherwise noted. For the LTC6404- – )/ defi ned as (V OUT OUT ICM ...

Page 6

LTC6404-1 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Temperature MID-SUPPLY CM OCM 2. –75 –50 – ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Small Signal Frequency Response vs Gain Setting Resistor Values and Supply Voltage 100Ω – 200Ω – 499Ω ...

Page 8

LTC6404-1 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Output Amplitude – MID-SUPPLY CM OCM – 25° 100Ω – SINGLE-ENDED INPUT ...

Page 9

PIN FUNCTIONS pin has an input resistance of approximately 23. mid-supply potential. The V pin should be bypassed OCM with a high quality ceramic bypass capacitor of at least 0.01μF, (unless you are using split supplies, then connect ...

Page 10

LTC6404-1 APPLICATIONS INFORMATION + V INP – SHDN + 2 V 0.1μ – OCM 0.01μF – V INM + 0.01μF MINI-CIRCUITS TCM4-19 50Ω V SHDN + + – 0.1μF ...

Page 11

APPLICATIONS INFORMATION Functional Description The LTC6404 small outline, wide band, low noise, and low distortion fully-differential amplifi er with accurate output phase balancing. The LTC6404-1 is optimized to drive low voltage, single-supply, differential input 14-bit to 18-bit analog-to-digital ...

Page 12

LTC6404-1 APPLICATIONS INFORMATION appear as open collectors with a non-linear capacitor in parallel and steering diodes to either supply. Because of the non-linear capacitance, the outputs still have the ability to sink and source small amounts of transient current if ...

Page 13

APPLICATIONS INFORMATION When the feedback ratios mismatch (Δβ), common mode to differential conversion occurs. Setting the differential input to zero (V gree of common mode to differential conversion is given by the equation – – V ...

Page 14

LTC6404-1 APPLICATIONS INFORMATION R INM CHOSEN SO THAT INM S R2 CHOSEN TO BALANCE Figure ...

Page 15

APPLICATIONS INFORMATION which incorporate an internal lowpass fi lter network with a –3dB bandwidth of 88.5MHz (Figure 6). These pins each have a DC output impedance of 50Ω. In- – ternal capacitances are 12pF each fi ltered ...

Page 16

LTC6404-1 APPLICATIONS INFORMATION Noise Considerations The LTC6404-1’s input referred voltage noise is on the order of 1.5nV/√Hz. Its input referred current noise is on the order of 3pA/√Hz. In addition to the noise generated by the amplifi er, the surrounding ...

Page 17

APPLICATIONS INFORMATION 100 TOTAL (AMPLIFIER AND FEEDBACK NETWORK) OUTPUT NOISE 10 FEEDBACK RESISTOR NETWORK NOISE ALONE 1 0.1 10 100 (Ω Figure 10. LTC6404-1 Output Spot Noise vs Spot Noise Contributed by Feedback Network ...

Page 18

LTC6404-1 APPLICATIONS INFORMATION the output common mode voltage, resistor mismatch can make the apparent voltage offset of the amplifi er appear worse than specifi ed. In general, the apparent input referred offset induced by feedback factor mismatch is given by ...

Page 19

... 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 20

... S/N with 3V Supply, SO-8 Package 76dB S/N with 3V Supply, SO-8 Package www.linear.com ● , 1MHz: –94dBc, 13mA, Low Noise: 3nV/√Hz P-P = 200Ω 105μA at 25°C IN S(MAX) = 200Ω 62μA at 25°C IN S(MAX) LT 1107 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 64041f ...

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