LT6604CUFF-15#TRPBF Linear Technology, LT6604CUFF-15#TRPBF Datasheet

IC AMP DIFF LN DUAL 34-QFN

LT6604CUFF-15#TRPBF

Manufacturer Part Number
LT6604CUFF-15#TRPBF
Description
IC AMP DIFF LN DUAL 34-QFN
Manufacturer
Linear Technology
Datasheet

Specifications of LT6604CUFF-15#TRPBF

Amplifier Type
Differential
Number Of Circuits
2
Output Type
Differential
Current - Input Bias
35µA
Voltage - Input Offset
10000µV
Current - Supply
38mA
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
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-15#TRPBFLT6604CUFF-15
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LT6604CUFF-15#TRPBFLT6604CUFF-15#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
APPLICATIONS
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
0.01μF
0.01μF
Dual Differential Amplifi er with 15MHz Lowpass
Filters
76dB Signal-to-Noise (3V Supply, 2V
Low Distortion, 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 Plus Filter
Single-Ended to Differential Converter
Matched, Dual, Differential 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
4th Order Filters
Approximates Chebyshev Response
Guaranteed Phase and Gain Matching
Resistor-Programmable Differential Gain
1MHz: 86dBc 2nd, 90dBc 3rd
10MHz: 63dBc 2nd, 69dBc 3rd
+
+
536Ω
536Ω
536Ω
536Ω
LT6604-15
+INA
V
V
–INA
+INB
V
V
–INB
MIDA
OCMA
MIDB
OCMB
+
+
P-P
+
+
V
, 800Ω Load, V
–OUTB
+OUTB
–OUTA
+OUTA
V
V
V
+
+
+
A
B
B
3V
3V
50Ω
50Ω
50Ω
50Ω
P-P
S
= 3V
Output)
18pF
18pF
LTC22xx
AIN
AIN
+
+
3V
DOUT
DOUT
DUAL ADC
660415 TA01
DESCRIPTION
The LT
amplifi ers, each with a 4th order, 15MHz 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 76dB. 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 highly matched between the two chan-
nels. Gain for each channel is independently programmed
using two external resistors. The LT6604-15 enables level
shifting by providing an adjustable output common mode
voltage, making it ideal for directly interfacing to ADCs.
The LT6604-15 is fully specifi ed for 3V operation. The
differential design enables outstanding performance at
a 2V
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.
Differential Amplifi er and
P-P
®
6604-15 consists of two matched, fully differential
signal level for a single 3V supply. See the back
Dual Very Low Noise,
15MHz Lowpass Filter
Channel to Channel Gain Matching
16
14
12
10
8
6
4
2
0
–0.25
50 TYPICAL UNITS
T
GAIN = 1
f
IN
A
= 25°C
= 15MHz
–0.2
–0. 1 5
–0.1
GAIN MATCH (dB)
–0.05
0
0.05
0.1
LT6604-15
0.15
660415 TA01b
0.2
0.25
660415fb
1

Related parts for LT6604CUFF-15#TRPBF

LT6604CUFF-15#TRPBF Summary of contents

Page 1

... L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3V LTC22xx ...

Page 2

... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT6604CUFF-15#PBF LT6604CUFF-15#TRPBF LT6604IUFF-15#PBF LT6604IUFF-15#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 range, otherwise specifi cations are PARAMETER Matching of Filter Gain Matching of Filter Phase Filter Gain Either Channel Matching of Filter Gain, V ...

Page 4

LT6604-15 ELECTRICAL CHARACTERISTICS range, otherwise specifi cations are PARAMETER Differential Offset Drift Input Common Mode Voltage (Note 3) Output Common Mode Voltage (Note 5) Output Common Mode Offset (with Respect OCM Common Mode Rejection ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Amplitude Response 10 0 –10 –20 –30 – –50 GAIN = 25°C A –60 0 100 FREQUENCY (MHz) 660415 G01 Passband Gain and Delay ...

Page 6

LT6604-15 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Signal Level – ± 800Ω AT EACH OUTPUT L –50 GAIN = 25°C A –60 2ND HARMONIC, 10MHz INPUT –70 3RD –80 HARMONIC, 10MHz INPUT –90 ...

Page 7

PIN FUNCTIONS +INA and –INA (Pins 2, 4): Channel A Input Pins. Signals can be applied to either or both input pins through identi- cal external resistors The DC gain from differential IN inputs to the differential outputs ...

Page 8

LT6604-15 BLOCK DIAGRAM +INA + –INA – OCMA – MIDB +INB + –INB – ...

Page 9

APPLICATIONS INFORMATION Interfacing to the LT6604-15 Note: The LT6604-15 contains two identical fi lters. The following applications information only refers to one fi lter. The two fi lters are independent except that they share the – same negative supply voltage ...

Page 10

LT6604-15 APPLICATIONS INFORMATION In Figure 3 the LT6604-15 is providing 12dB of gain. The gain resistor has an optional 62pF in parallel to improve the passband fl atness near 15MHz. The common mode output voltage is set to 2V. Use ...

Page 11

APPLICATIONS INFORMATION where impedance must be considered is the evaluation of the LT6604-15 with a network analyzer. Figure laboratory setup that can be used to char- acterize the LT6604-15 using single-ended instruments with 50Ω source impedance and ...

Page 12

LT6604-15 APPLICATIONS INFORMATION Common Mode DC Currents In applications like Figure 1 and Figure 3 where the LT6604-15 not only provides lowpass fi ltering but also level shifts the common mode voltage of the input signal, DC currents will be ...

Page 13

APPLICATIONS INFORMATION Figure 8 is plot of the noise spectral density as a function of frequency for an LT6604-15 with R the fi xture of Figure 7 (the instrument noise has been subtracted from the results). The noise at each ...

Page 14

LT6604-15 TYPICAL APPLICATION R IN 536Ω 536Ω 536Ω 536Ω 14 Dual Matched I and Q Lowpass Filter and ADC (Typical Phase Matching ±1 Degree) V CMA 2.2μF 3V 0.1μF 5.6pF 25 4 ...

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 = 82dB at 3V Supply, 4 SNR = 82dB at 3V Supply, 4 www.linear.com ● th Order, Differential th Order, Differential th Order Filter th Order Filter th Order Filter th Order Filter th Order Filter th Order Filter th Order Filter th Order Filter 660415fb LT 0409 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 ...

Related keywords