LT6604CUFF-5#PBF Linear Technology, LT6604CUFF-5#PBF Datasheet

IC AMP DIFF LN DUAL 34-QFN

LT6604CUFF-5#PBF

Manufacturer Part Number
LT6604CUFF-5#PBF
Description
IC AMP DIFF LN DUAL 34-QFN
Manufacturer
Linear Technology
Datasheets

Specifications of LT6604CUFF-5#PBF

Amplifier Type
Differential
Number Of Circuits
2
Output Type
Differential
Current - Input Bias
30µA
Voltage - Input Offset
8000µV
Current - Supply
30mA
Voltage - Supply, Single/dual (±)
3 V ~ 11 V, ±1.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
34-QFN
No. Of Amplifiers
2
Input Offset Voltage
35mV
Bandwidth
5MHz
Supply Voltage Range
3V To 11V
Supply Current
30mA
Amplifier Case Style
QFN
No. Of Pins
34
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output / Channel
-
-3db Bandwidth
-
Slew Rate
-
Gain Bandwidth Product
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT6604CUFF-5#PBFLT6604CUFF-5
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LT6604CUFF-5#PBF
Manufacturer:
LT
Quantity:
780
FEATURES
APPLICATIONS
n
n
n
n
n
n
n
n
n
n
n
n
n
n
TYPICAL APPLICATION
+
+
Dual Differential Amplifi er with 5MHz Lowpass Filters
>82dB Signal-to-Noise (3V Supply, 2V
Low Distortion (1MHz, 2V
Specifi ed for Operation with 3V, 5V and ±5V Supplies
Fully Differential Inputs and Outputs
Adjustable Output Common Mode Voltage
Small 4mm × 7mm × 0.75mm QFN Package
Dual Differential ADC Driver and Filter
Single-Ended to Differential Converter
Matched, Dual, Differential Gain or Filter Stage
Common Mode Translation of Differential Signals
High Speed ADC Antialiasing and DAC Smoothing in
Wireless Infrastructure or Networking Applications
High Speed Test and Measurement Equipment
Medical Imaging
0.01μF
0.01μF
4th Order Filters
Approximates Chebyshev Response
Guaranteed Phase and Gain Matching
Resistor-Programmable Differential Gain
HD2: 93dBc
HD3: 96dBc
806Ω
806Ω
806Ω
806Ω
LT6604-5
+INA
V
V
–INA
+INB
V
V
–INB
MIDA
OCMA
MIDB
OCMB
+
+
+
+
V
P-P
–OUTB
+OUTB
–OUTA
+OUTA
V
V
V
+
+
+
Output, 800Ω Load)
A
B
B
3V
3V
50Ω
50Ω
50Ω
50Ω
P-P
Output)
18pF
18pF
LTC22xx
AIN
AIN
+
+
3V
DOUT
DOUT
DESCRIPTION
The LT
amplifi ers, each with a 4th order, 5MHz lowpass fi lter. The
fi xed frequency lowpass fi lter approximates a Chebyshev
response. By integrating a fi lter and a differential ampli-
fi er, distortion and noise are made exceptionally low. At
unity gain, the measured in-band signal-to-noise ratio is
an impressive 82dB. At higher gains, the input referred
noise decreases, allowing the part to process smaller
input differential signals without signifi cantly degrading
the signal-to-noise ratio.
Gain and phase are well matched between the two chan-
nels. Gain for each channel is independently programmed
using two external resistors. The LT6604-5 enables level
shifting by providing an adjustable output common mode
voltage, making it ideal for directly interfacing to ADCs.
The LT6604-5 is fully specifi ed for 3V operation. The dif-
ferential design enables outstanding performance at a
2V
See the back page of this datasheet for a complete list of
related single and dual differential amplifi ers with integrated
2.5MHz to 20MHz lowpass fi lters.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
DUAL ADC
P-P
66045 TA01
Differential Amplifi er and
signal level for a single 3V supply.
®
6604-5 consists of two matched, fully differential
Dual Very Low Noise,
5MHz Lowpass Filter
25
20
15
10
5
0
–0.20
Channel to Channel Gain Matching
50 TYPICAL UNITS
T
GAIN = 1
f
IN
A
= 25°C
= 5MHz
–0.10
GAIN MATCH (dB)
0
LT6604-5
0.10
66045 TA01b
0.20
66045fa
1

Related parts for LT6604CUFF-5#PBF

LT6604CUFF-5#PBF Summary of contents

Page 1

... See the back page of this datasheet for a complete list of related single and dual differential amplifi ers with integrated 2.5MHz to 20MHz lowpass fi lters. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3V ...

Page 2

... OCM MID ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT6604CUFF-5#PBF LT6604CUFF-5#TRPBF LT6604IUFF-5#PBF LT6604IUFF-5#TRPBF 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

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 1k. LOAD PARAMETER Filter Gain Either Channel Matching of Filter Gain Matching of Filter Phase Filter ...

Page 4

LT6604-5 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 1k. LOAD PARAMETER Input Referred Differential Offset Differential Offset Drift Input Common Mode Voltage (Note 3) Output Common Mode Voltage (Note 5) Output Common Mode Offset (with ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Frequency Response 10 0 –10 –20 –30 –40 –50 –60 –70 –80 0.1 1 FREQUENCY (MHz) Passband Gain and Group Delay 13 GAIN DELAY GAIN = ...

Page 6

LT6604-5 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Signal Level – 3V 800Ω 25°C, GAIN = 1 A –50 3RD HARMONIC, –60 5MHz INPUT –70 2ND HARMONIC, 5MHz INPUT –80 3RD HARMONIC, 1MHz INPUT ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Input Referred Noise 45 INTEGRATED NOISE, GAIN = 1X INTEGRATED NOISE, GAIN = 4X 40 NOISE DENSITY, GAIN = 1X 35 NOISE DENSITY, GAIN = 0.01 0.1 1 FREQUENCY ...

Page 8

LT6604-5 PIN FUNCTIONS +OUTA, – OUTA (Pins 27, 29): Output Pins. Pins 27 and 29 are the fi lter differential outputs for channel A. With a typical short-circuit current limit greater than ±40mA, each pin can drive a 100Ω and/or ...

Page 9

APPLICATIONS INFORMATION Interfacing to the LT6604-5 Note: The LT6604-5 contains two identical fi lters. The fol- lowing applications information only refers to one fi lter. The two fi lters are independent except that they share the – same negative supply ...

Page 10

LT6604-5 APPLICATIONS INFORMATION CURRENT 3.3V OUTPUT 0.1μF DAC 25 – – 1 LT6604-5 0.01μ – 66045 F04 R1 Figure 4 Use Figure 4 ...

Page 11

APPLICATIONS INFORMATION 20 1dB PASSBAND GAIN 1MHz T COMPRESSION POINTS 0 1MHz T 3RD HARMONIC – 85°C A 3RD HARMONIC – 25°C A –60 –80 2ND HARMONIC T = 85°C A –100 2ND HARMONIC T = ...

Page 12

LT6604-5 APPLICATIONS INFORMATION Noise The noise performance of the LT6604-5 channel can be evaluated with the circuit of Figure 7. Given the low noise output of the LT6604-5 and the 6dB attenuation of the transformer coupling network necessary ...

Page 13

APPLICATIONS INFORMATION Junction temperature calculated from the ambient J temperature and power dissipation dissipation is the product of supply voltage, V supply current Therefore, the junction temperature is S given by: ...

Page 14

LT6604-5 TYPICAL APPLICATIONS Single-Ended Input ( 0.1μF 249Ω 249Ω 249Ω 0.1μF Frequency Response 12 0 –12 –24 –36 –48 –60 –72 –84 –96 –108 0.1 1 FREQUENCY (MHz) 14 Dual, Matched, 6th Order, 5MHz Lowpass Filter ...

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. UFF Package 34-Lead Plastic QFN (4mm × ...

Page 16

... SNR = 76dB at 3V Supply, 4th Order Filter SNR = 76dB at 3V Supply, 4th Order Filter SNR = 86dB at 3V Supply, 4th Order Filter SNR = 82dB at 3V Supply, 4th Order Filter SNR = 76dB at 3V Supply, 4th Order Filter LT 0409 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 66045fa ...

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