參數(shù)資料
型號(hào)： LTC6604CUFF-15#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQCC34
封裝： 4 X 7 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-34
文件頁(yè)數(shù)： 1/16頁(yè)
文件大小： 203K
代理商： LTC6604CUFF-15#TRPBF
LT6604-15
1
660415fa
TYPICAL APPLICATION
DESCRIPTION
Dual Very Low Noise,
Differential Amplier and
15MHz Lowpass Filter
The LT6604-15 consists of two matched, fully differential
ampliers, each with a 4th order, 15MHz lowpass lter. The
xed frequency lowpass lter approximates a Chebyshev
response. By integrating a lter and a differential ampli-
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 signicantly 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 specied for 3V operation. The
differential design enables outstanding performance at
a 2VP-P signal level for a single 3V supply. See the back
page of this datasheet for a complete list of related single
and dual differential ampliers with integrated 2.5MHz to
20MHz lowpass lters.
Channel to Channel Gain Matching
FEATURES
APPLICATIONS
n Dual Differential Amplier with 15MHz Lowpass
Filters
4th Order Filters
Approximates Chebyshev Response
Guaranteed Phase and Gain Matching
Resistor-Programmable Differential Gain
n 76dB Signal-to-Noise (3V Supply, 2VP-P Output)
n Low Distortion, 2VP-P, 800Ω Load, VS = 3V
1MHz: 86dBc 2nd, 90dBc 3rd
10MHz: 63dBc 2nd, 69dBc 3rd
n Specied for Operation with 3V, 5V and ±5V Supplies
n Fully Differential Inputs and Outputs
n Adjustable Output Common Mode Voltage
n Small 4mm × 7mm × 0.75mm QFN Package
n Dual Differential ADC Driver Plus Filter
n Single-Ended to Differential Converter
n Matched, Dual, Differential Filter Stage
n Common Mode Translation of Differential Signals
n High Speed ADC Antialiasing and DAC Smoothing in
Wireless Infrastructure or Networking Applications
n High Speed Test and Measurement Equipment
n Medical Imaging
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
536Ω
3V
+
–
+
–
660415 TA01
+
–
DOUT
AIN
LT6604-15
LTC22xx
+
–
536Ω
3V
–OUTA
+OUTA
–OUTB
+OUTB
+INA
VMIDB
VMIDA
+INB
VOCMA
VOCMB
–INA
–INB
V–
+
–
+
–
+
–
DOUT
AIN
+
–
50Ω
DUAL ADC
V+A
V+B
V+B
50Ω
18pF
0.01μF
–0.25
12
16
0.15
660415 TA01b
8
4
10
14
6
2
0
–0.2
–0.1
–0.15
0.05
–0.05
0.1
0.2
0
0.25
GAIN MATCH (dB)
50 TYPICAL UNITS
TA = 25°C
GAIN = 1
fIN = 15MHz
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