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LTC6601CUF-2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P40
LTC6601-2
1
66012f
FEATURES
APPLICATIONS
DESCRIPTION
Low Power, Low Distortion,
5MHz to 27MHz, Pin Confi gurable
Filter/ADC Driver
The LTC
®
6601-2 is a low power, low distortion, very
easy-to-use fully differential 2nd order active broadband
RC fi lter and driver. On-chip resistors, capacitors, and
amplifi er bandwidth are trimmed to provide consistent
and repeatable fi lter characteristics.
The fi lter characteristics are pin-strap confi gurable. Cutoff
frequencies range from 5MHz to 27MHz. Gain is pin-strap
programmable between –17dB and +17dB.
A three-state BIAS pin is provided to adjust amplifi er
power consumption. Select between low power (50%
power reduction), high performance and standby modes
with the BIAS pin.
The LTC6601 family comes in two options which trade
off distortion and noise. The LTC6601-2 offers the lowest
distortion at high frequencies. The LTC6601-1 is confi g-
ured for lowest noise. Both are available in pin-compatible
packages.
The LTC6601-2 is available in a compact 4mm × 4mm
20-pin leadless QFN package.
15MHz Filter, Single-Ended Input, Low Power Mode
n
Pin Confi gurable Gain and Filter Response
Up to 27MHz
n
Low Power: 16mA at 3V
n
Low Distortion (2V
P-P
)
1MHz: –96dBc 2nd, –112dBc 3rd
10MHz: –65dBc 2nd, –78dBc 3rd
n
Few External Components Required
n
Resistors Trimmed to 0.5% Accuracy Typical
n
Capacitors Trimmed to 0.5% Accuracy Typical
n
Adjustable Output Common Mode Voltage
n
Rail-to-Rail Output Swing
n
Power Confi gurability and Low Power Shutdown
n
Tiny 0.75mm 20-Lead (4mm × 4mm) QFN Package
n
Differential A/D Converter Driver
n
Antialiasing/Reconstruction Filter
n
Single-Ended to Differential Conversion/Amplifi cation
n
Low Voltage, Low Noise, Differential Signal
Processing
n
Common Mode Voltage Translation
n
Portable Instrumentation
25MHz Filter, Single-Ended Input, Low Power Mode
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6271719.
TYPICAL APPLICATION
Distortion Comparison Between LTC6601-1 and LTC6602-2
FREQUENCY (MHz)
DISTORTION COMPONENT (dBc)
66012 TA01a
–50
–80
–90
–100
–110
–70
–60
–120
1 10 100
LTC6601-1 HD2
LTC6601-2 HD2
LTC6601-1 HD3
LTC6601-2 HD3
FREQUENCY (MHz)
DISTORTION COMPONENT (dBc)
66012 TA01b
–40
–80
–90
–100
–110
–70
–60
–50
–120
1 10 100
LTC6601-1 HD2
LTC6601-2 HD2
LTC6601-1 HD3
LTC6601-2 HD3
LTC6601-2
2
66012f
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
+
to V
–
) ...............................5.5V
Input Voltage (Any Pin) (Note 2) ..V
+
+ 0.3V to V
–
–0.3V
Input Current (V
OCM
, BIAS) ..................................±10mA
Input Current (Pins 1, 5) (Note 2) ........................±20mA
Input Current (Pins 2, 4) (Note 2) ........................±30mA
Input Current (Pins 6, 20) (Note 2) ......................±15mA
Input Current (Pins 7, 8, 9, 10, 16, 17, 18, 19)
(Note 2) ................................................................±10mA
Output Short-Circuit Duration (Note 3) ............ Indefi nite
Operating Temperature Range (Note 4)....–40°C to 85°C
Specifi ed Temperature Range (Note 5) ....–40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ...................–65°C to 150°C
(Note 1)
20 19 18 17 16
6 7 8
TOP VIEW
21
UF PACKAGE
20-LEAD (4mm s 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15
IN2
+
IN1
+
BIAS
IN1
–
IN2
–
OUT
–
V
+
V
–
V
OCM
OUT
+
IN4
+
C5
C6
C7
C8
IN4
–
C1
C2
C3
C4
T
JMAX
= 150°C, θ
JA
= 37°C/W, θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 21) IS V
–
, MUST BE SOLDERED TO PCB
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC6601CUF-2#PBF
LTC6601IUF-2#PBF
LTC6601CUF-2#TRPBF
LTC6601IUF-2#TRPBF
66012
66012
20-Lead (4mm × 4mm) Plastic QFN
20-Lead (4mm × 4mm) Plastic QFN
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ORDER INFORMATION
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OSDIFF
(Note 6) Amplifi er Differential Offset Voltage (Input
Referred)
V
S
= 2.7V to 5.25V, BIAS = Floating
BIAS = V
+
l
l
±0.25
±0.25
±2
±1.25
mV
mV
ΔV
OSDIFF
/ΔT
(Note 6)
Ampifi er Differential Offset Voltage Drift
(Input Referred)
V
S
= 2.7V to 5.25V 1 µV/°C
R
IN
(Note 14) Input Resistance, BIAS = V
+
Single Ended Input Resistance, Pin 2 or Pin 4
Differential Input Resistance
V
S
= 3V
V
S
= 3V
133
200
DC ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
INCM
= V
OCM
= mid-supply, BIAS tied to V
+
or fl oating,
I
LOAD
= 0, R
BAL
= 100k. The fi lter is confi gured for a gain of 1 unless otherwise noted. V
S
is defi ned as (V
+
– V
–
). V
OUTCM
is defi ned as
(V
OUT
+
+ V
OUT
–
)/2. V
INCM
is defi ned as (V
INP
+ V
INM
)/2. V
OUTDIFF
is defi ned as (V
OUT
+
– V
OUT
–
). V
INDIFF
is defi ned as (V
INP
– V
INM
). See
Figure 1.
LTC6601-2
3
66012f
DC ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
INCM
= V
OCM
= mid-supply, BIAS tied to V
+
or fl oating,
I
LOAD
= 0, R
BAL
= 100k. The fi lter is confi gured for a gain of 1 unless otherwise noted. V
S
is defi ned as (V
+
– V
–
). V
OUTCM
is defi ned as
(V
OUT
+
+ V
OUT
–
)/2. V
INCM
is defi ned as (V
INP
+ V
INM
)/2. V
OUTDIFF
is defi ned as (V
OUT
+
– V
OUT
–
). V
INDIFF
is defi ned as (V
INP
– V
INM
). See
Figure 1.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ΔR
IN
(Note 14)
Input Resistance Match, BIAS = V
+
Single Ended Input Resistance, Pin 2 or Pin 4 V
S
= 3V
l
±0.25
I
B
(Note 7) Internal Amplifi er Input Bias V
S
= 2.7V to 5V BIAS = Floating
BIAS = V
+
l
l
–25
–50
–12.5
–25
0
0
µA
µA
I
OS
(Note 7) Internal Amplifi er Input Offset V
S
= 2.7V to 5V BIAS = Floating
BIAS = V
+
l
l
±1
±1
±5
±10
µA
µA
V
INCM
(Note 8) Input Signal Common Mode Range
(V
INP
+ V
INM
)/2
BIAS = V
+
, V
OCM
= 2.5V
BIAS = V
+
, V
OCM
= 1.5V
V
S
= 5V
V
S
= 3V
l
l
0
0
4.7
1.7
V
V
BIAS Pin Floating, V
OCM
= 2.5V
BIAS Pin Floating, V
OCM
= 1.5V
V
S
= 5V
V
S
= 3V
l
l
0
0
4.8
1.8
V
V
CMRRI
(Notes 9, 14)
Input Common Mode Rejection Ratio
(Amplifi er Input Referred) ΔV
INCM
/ΔV
OSDIFF
ΔV
INCM
= 2.5V V
S
= 5V 74 dB
CMRRO
(Notes 9, 14)
Output Common Mode Rejection Ratio
(Amplifi er Input Referred) ΔV
OCM
/ΔV
OSDIFF
ΔV
OCM
= 1V V
S
= 5V 70 dB
PSRR (Note 10) Power Supply Rejection Ratio
(Amplifi er Input Referred) ΔV
S
/ΔV
OSDIFF
BIAS Pin Floating
BIAS = V
+
V
S
= 2.7V to 5V
V
S
= 2.7V to 5V
l
l
58
58
94
81
dB
dB
PSRRCM (Note 10) Common Mode Power Supply Rejection Ratio
(ΔV
S
/ΔV
OSCM
)V
S
= 2.7V to 5V
l
40 51 dB
g
cm
Common Mode Gain (ΔV
OUTCM
/ΔV
OCM
)
ΔV
OCM
= 2V
V
S
= 5V 1 V/V
Common Mode Gain Error = 100 • (g
cm
– 1)
ΔV
OCM
= 2V V
S
= 5V
l
±0.3 ±1.0 %
BAL
Output Balance (ΔV
OUTCM
/ΔV
OUTDIFF
)
Single-Ended Input
Differential Input
ΔV
OUTDIFF
= 2V
V
S
= 5V
V
S
= 5V
l
l
–58
–62
–40
–40
dB
dB
V
OSCM
Common Mode Offset Voltage
(V
OUTCM
– V
OCM
)
V
S
= 2.7V to 5V BIAS = Floating
V
S
= 2.7V to 5V BIAS = V
+
l
l
±15
±15
±30
±30
mV
mV
ΔV
OSCM
/ΔT
Common Mode Offset Voltage Drift
(V
OUTCM
– V
OCM
)
V
S
= 2.7V to 5V BIAS = Floating
V
S
= 2.7V to 5V BIAS = V
+
l
l
20
20
µV/°C
µV/°C
V
OUTCMR
(Note 8) Output Signal Common Mode Range
(Voltage Range for the V
OCM
Pin) V
S
= 3V BIAS Pin Floating
V
S
= 5V BIAS Pin Floating
V
S
= 3V BIAS = V
+
V
S
= 5V BIAS = V
+
l
l
l
l
1.1
1.1
1.1
1.1
1.8
4
1.7
4
V
V
V
V
R
INVOCM
Input Resistance, V
OCM
Pin V
S
= 3V
l
579 kΩ
V
MID
Voltage at the V
OCM
PIn V
S
= 3V
l
1.475 1.5 1.525 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P40

LTC6601CUF-2#TRPBF

Mfr. #:
Buy LTC6601CUF-2#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Differential Amplifiers Low Power, Low Distortion, 0.5% Tolerance, Pin Configurable Filter/Amplifier
Lifecycle:
New from this manufacturer.
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