FEATURES
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LTC6252/LTC6253/LTC6254
720MHz, 3.5mA Power
Efficient Rail-to-Rail
I/O Op Amps
DESCRIPTION
The LTC
®
6252/LTC6253/LTC6254 are single/dual/quad low
power, high speed unity gain stable rail-to-rail input/output
operational amplifiers. On only 3.5mA of supply current
they feature a 720MHz gain-bandwidth product, 280V/µs
slew rate and a low 2.75nV/√Hz of input-referred noise.
The combination of high bandwidth, high slew rate, low
power consumption and low broadband noise makes the
LTC6252 family unique among rail-to-rail input/output op
amps with similar supply currents. They are ideal for lower
supply voltage high speed signal conditioning systems.
The LTC6252 family maintains high efficiency performance
from supply voltage levels of 2.5V to 5.25V and is fully
specified at supplies of 2.7V and 5.0V.
For applications that require power-down, the LTC6252 and
the LTC6253 in MS10 offer a shutdown pin which disables
the amplifier and reduces current consumption to 42µA.
The LTC6252 family can be used as a plug-in replacement
for many commercially available op amps to reduce power
or to improve input/output range and performance.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Gain Bandwidth Product: 720MHz
–3dB Frequency (A
V
= 1): 400MHz
Low Quiescent Current: 3.5mA Max
High Slew Rate: 280V/µs
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Broadband Voltage Noise: 2.75nV/√Hz
Power-Down Mode: 42μA
Fast Output Recovery
Supply Voltage Range: 2.5V to 5.25V
Input Offset Voltage: 350µV Max
Large Output Current: 90mA
CMRR: 105dB
Open Loop Gain: 60V/mV
Operating Temperature Range: –40°C to 125°C
Single in 6-Pin TSOT-23
Dual in MS8, 2mm
×
2mm DFN, 8-Pin TS0T-23, MS10
Quad in MS16
APPLICATIONS
n
n
n
n
n
Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
Active Filters
Battery Powered Equipment
TYPICAL APPLICATION
5V Single-Supply 16-Bit ADC Driver
5V
V
IN
27.4mV TO
(3.5V + 27.4mV)
5V
10µF
0.1µF
AVP
2.5k
2.5k
5V
249
100
IN
+
LTC2393-16
100
IN
–
REFIN
CNVST
RESET
PD
GND OGND
REFOUT
VCM
10µF
1µF
10µF
5V
0.1µF
DVP
1.8V TO 5V
4.7µF
OVP
0
–20
PARALLEL
OR
16 BIT
SERIAL
INTERFACE
SER/PAR
BYTESWAP
OB/2C
CS
RD
BUSY
625234 TA01
LTC6253 Driving LTC2393-16
16-Bit ADC 5V Single-Supply
Performance
f
S
= 1Msps
F1 = 20.111kHz
F1 AMPLITUDE
= –1.032dBFS
SNR = 93.28dB
THD = –100.50dB
SINAD = 92.53dB
SFDR = 104.7dB
F2 = –106.39dBc
F3 = –104.70dBc
F4 = –114.13dBc
F5 = –105.48dBc
+
½ LTC6253
–
143Ω
–40
AMPLITUDE (dBFS)
–60
–80
–100
–120
–140
–160
0
100
845Ω
3900pF
249
~2.08V
+
–
½ LTC6253
SAMPLE CLOCK
200
300
FREQUENCY (kHz)
400
500
624678 TA01b
625234fc
1
LTC6252/LTC6253/LTC6254
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
+
to V
–
) ................................5.5V
Input Current (+IN, –IN,
SHDN)
(Note 2) .............. ±10mA
Output Current (Note 3) ..................................... ±100mA
Operating Temperature Range (Note 4).. –40°C to 125°C
Specified Temperature Range (Note 5) .. –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Junction Temperature ........................................... 150°C
Lead Temperature (Soldering, 10 sec)
MSOP, TSOT Packages Only ............................. 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
OUT 1
V
–
2
+IN 3
+ –
OUT A 1
5
SHDN
4 –IN
+IN A 3
V
–
4
+
–
8 V
+
7 OUT B
6 –IN B
5 +IN B
9
+
–
TOP VIEW
+
–
6 V
+
–IN A 2
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
q
JA
= 192°C/W (NOTE 9)
DC PACKAGE
8-LEAD (2mm
×
2mm) PLASTIC DFN
T
JMAX
= 125°C,
q
JA
= 102°C/W (NOTE 9)
EXPOSED PAD (PIN 9) IS V
–
, MUST BE SOLDERED TO PCB
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
q
JA
= 163°C/W (NOTE 9)
TOP VIEW
TOP VIEW
+
–
TOP VIEW
+
–
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
q
JA
= 160°C/W (NOTE 9)
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
q
JA
= 195°C/W (NOTE 9)
ORDER INFORMATION
LEAD FREE FINISH
LTC6252CS6#TRMPBF
LTC6252IS6#TRMPBF
LTC6252HS6#TRMPBF
LTC6253CDC#TRMPBF
LTC6253IDC#TRMPBF
LTC6253CMS8#PBF
LTC6253IMS8#PBF
LTC6253HMS8#PBF
LTC6253CTS8#TRMPBF
LTC6253ITS8#TRMPBF
LTC6253HTS8#TRMPBF
TAPE AND REEL
LTC6252CS6#TRPBF
LTC6252IS6#TRPBF
LTC6252HS6#TRPBF
LTC6253CDC#TRPBF
LTC6253IDC#TRPBF
LTC6253CMS8#TRPBF
LTC6253IMS8#TRPBF
LTC6253HMS8#TRPBF
LTC6253CTS8#TRPBF
LTC6253ITS8#TRPBF
LTC6253HTS8#TRPBF
PART MARKING*
LTFRW
LTFRW
LTFRW
LFRZ
LFRZ
LTFRX
LTFRX
LTFRX
LTFRY
LTFRY
LTFRY
PACKAGE DESCRIPTION
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
8-Lead (2mm
×
2mm) Plastic DFN
8-Lead (2mm
×
2mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
625234fc
2
+
–
+
–
OUT A
–IN A
+IN A
V–
SHDNA
1
2
3
4
5
OUT A 1
–IN A 2
+IN A 3
V
–
4
8V
7 OUT B
6 –IN B
5 +IN B
+
–
+
–
MS PACKAGE
16-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
q
JA
= 125°C/W (NOTE 9)
+
–
+
–
10 V+
9 OUT B
8 –IN B
7 +IN B
6
SHDNB
+
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
2
3
4
5
6
7
8
+
–
OUT A
–IN A
+IN A
V–
1
2
3
4
8
7
6
5
V+
OUT B
–IN B
+IN B
16
15
14
13
12
11
10
9
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
LTC6252/LTC6253/LTC6254
ORDER INFORMATION
LEAD FREE FINISH
LTC6253CMS#PBF
LTC6253IMS#PBF
LTC6254CMS#PBF
LTC6254IMS#PBF
LTC6254HMS#PBF
TAPE AND REEL
LTC6253CMS#TRPBF
LTC6253IMS#TRPBF
LTC6254CMS#TRPBF
LTC6254IMS#TRPBF
LTC6254HMS#TRPBF
PART MARKING*
LTFSB
LTFSB
6254
6254
6254
PACKAGE DESCRIPTION
10-Lead Plastic MSOP
10-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
specified temperature range, otherwise specifications are at T
A
= 25°C. For each amplifier V
S
= 5V, 0V; V
SHDN
= 2V; V
CM
= V
OUT
=
2.5V, unless otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
V
CM
= Half Supply
l
ELECTRICAL CHARACTERISTICS
(V
S
= 5V)
The
l
denotes the specifications which apply across the
MIN
–350
–1000
–2.2
–3.3
–350
–550
–2.75
–4
–0.75
–1.15
0.8
0.4
–0.5
–0.6
–0.5
–0.6
TYP
50
0.1
50
0.1
–3.5
–0.1
1.4
–0.03
–0.03
2.75
2
4
2.5
0.8
7.2
3
l
MAX
350
1000
2.2
–3.3
350
550
2.75
4
0.75
1.15
3.0
5.0
0.5
0.6
0.5
0.6
UNITS
µV
µV
mV
mV
µV
µV
mV
mV
µV/°C
µA
µA
µA
µA
µA
µA
µA
µA
nV/√Hz
µV
P-P
pA/√Hz
pF
pF
kΩ
MΩ
V/mV
V/mV
V/mV
V/mV
dB
dB
625234fc
V
CM
= V
+
– 0.5V, NPN Mode
l
DV
OS
Input Offset Voltage Match
(Channel-to-Channel) (Note 8)
V
CM
= Half Supply
l
V
CM
= V
+
– 0.5V, NPN Mode
l
V
OS
T
C
I
B
Input Offset Voltage Drift
Input Bias Current (Note 7)
V
CM
= Half Supply
l
l
V
CM
= V
+
– 0.5V, NPN Mode
l
I
OS
Input Offset Current
V
CM
= Half Supply
l
V
CM
= V
+
– 0.5V, NPN Mode
l
e
n
i
n
C
IN
R
IN
A
VOL
Input Noise Voltage Density
Input 1/f Noise Voltage
Input Noise Current Density
Input Capacitance
Input Resistance
Large Signal Voltage Gain
f = 1MHz
f = 0.1Hz to 10Hz
f = 1MHz
Differential Mode
Common Mode
Differential Mode
Common Mode
R
L
= 1k to Half Supply (Note 10)
R
L
= 100Ω to Half Supply (Note 10)
l
35
16
5
2.4
85
82
60
13
105
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 3.5V
l
3
LTC6252/LTC6253/LTC6254
ELECTRICAL CHARACTERISTICS
SYMBOL
V
CMR
PSRR
PARAMETER
Input Common Mode Range
Power Supply Rejection Ratio
Supply Voltage Range (Note 6)
V
OL
Output Swing Low (V
OUT
– V
–
)
No Load
l
specified temperature range, otherwise specifications are at T
A
= 25°C. For each amplifier V
S
= 5V, 0V; V
SHDN
= 2V; V
CM
= V
OUT
=
2.5V, unless otherwise noted.
CONDITIONS
l
(V
S
= 5V)
The
l
denotes the specifications which apply across the
MIN
0
66.5
62
2.5
25
60
l
TYP
70
MAX
V
S
UNITS
V
dB
dB
V
S
= 2.5V to 5.25V
V
CM
= 1V
l
l
5.25
40
65
90
120
200
320
100
120
170
210
330
450
–40
–32
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
I
SINK
= 5mA
I
SINK
= 25mA
l
150
65
l
V
OH
Output Swing High (V
+
– V
OUT
)
No Load
I
SOURCE
= 5mA
l
115
270
l
I
SOURCE
= 25mA
I
SC
Output Short-Circuit Current
Sourcing
l
–90
60
40
100
3.3
l
Sinking
l
I
S
Supply Current per Amplifier
V
CM
= Half Supply
V
CM
= V
+
– 0.5V
l
3.5
4.8
4.85
5.9
55
75
0
0
300
600
0.8
mA
mA
mA
mA
µA
µA
µA
µA
nA
nA
V
V
nA
µs
µs
MHz
MHz
MHz
ns
V/µs
MHz
4.25
42
l
I
SD
I
SHDNL
I
SHDNH
V
L
V
H
I
OSD
t
ON
t
OFF
BW
GBW
t
S
, 0.1%
SR
FPBW
Disable Supply Current
SHDN
Pin Current Low
SHDN
Pin Current High
SHDN
Pin Input Voltage Low
SHDN
Pin Input Voltage High
Output Leakage Current in Shutdown
Turn-On Time
Turn-Off Time
–3dB Closed Loop Bandwidth
Gain-Bandwidth Product
Settling Time to 0.1%
Slew Rate
Full Power Bandwidth
V
SHDN
= 0.8V
V
SHDN
= 0.8V
l
–3
–4
–300
–600
2
–1.6
35
V
SHDN
= 2V
l
l
l
V
SHDN
= 0.8V, Output Shorted to Either
Supply
V
SHDN
= 0.8V to 2V
V
SHDN
= 2V to 0.8V
A
V
= 1, R
L
= 1k to Half Supply
f = 4MHz, R
L
= 1k to Half Supply
l
100
3.5
2
400
450
320
720
36
280
9.5
A
V
= 1, V
O
= 2V Step R
L
= 1k
A
V
= –1, 4V Step (Note 11)
V
OUT
= 4V
P-P
(Note 13)
625234fc
4
LTC6252/LTC6253/LTC6254
ELECTRICAL CHARACTERISTICS
SYMBOL
HD2/HD3
PARAMETER
Harmonic Distortion
R
L
= 1k to Half Supply
R
L
= 100Ω to Half Supply
specified temperature range, otherwise specifications are at T
A
= 25°C. For each amplifier V
S
= 5V, 0V; V
SHDN
= 2V; V
CM
= V
OUT
=
2.5V, unless otherwise noted.
CONDITIONS
f
C
= 100kHz, V
O
= 2V
P-P
f
C
= 1MHz, V
O
= 2V
P-P
f
C
= 2.5MHz, V
O
= 2V
P-P
f
C
= 4MHz, V
O
= 2V
P-P
f
C
= 100kHz, V
O
= 2V
P-P
f
C
= 1MHz, V
O
= 2V
P-P
f
C
= 2.5MHz, V
O
= 2V
P-P
f
C
= 4MHz, V
O
= 2V
P-P
A
V
= 2, R
L
= 150Ω, V
S
= ±2.5V
A
V
= 1, R
L
= 1kΩ, V
S
= ±2.5V
A
V
= 2, R
L
= 150Ω, V
S
= ±2.5V
A
V
= 1, R
L
= 1kΩ, V
S
= ±2.5V
A
V
= –1, R
L
= 1k to Half Supply,
V
OUT
= 2V
P-P
, f = 2.5MHz
MIN
TYP
99/109
97/104
83/82
77/71
97/90
95/70
87/65
78/59
0.1
0.02
0.25
0.05
–96
MAX
UNITS
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
%
%
Deg
Deg
dB
(V
S
= 5V)
The
l
denotes the specifications which apply across the
DG
Dq
Differential Gain (Note 14)
Differential Phase (Note 14)
Crosstalk
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
specified temperature range, otherwise specifications are at T
A
= 25°C. For each amplifier V
S
= 2.7V, 0V; V
SHDN
= 2V; V
CM
= V
OUT
=
1.35V, unless otherwise noted.
CONDITIONS
V
CM
= Half Supply
l
(V
S
= 2.7V)
The
l
denotes the specifications which apply across the
MIN
0
–300
–1.6
–2.0
–350
–750
–2.8
–4
–1000
–1500
0.6
0
–500
–600
–500
–600
TYP
700
0.9
10
0.1
2.75
–275
1.175
–150
–30
2.9
2
3.6
2.5
0.8
7.2
3
l
l
MAX
1250
1500
3.2
3.4
350
750
2.8
4
600
900
2.5
4.0
500
600
500
600
UNITS
µV
µV
mV
mV
µV
µV
mV
mV
µV/°C
nA
nA
µA
µA
nA
nA
nA
nA
nV/√Hz
µV
P-P
pA/√Hz
pF
pF
kΩ
MΩ
V/mV
V/mV
V/mV
V/mV
625234fc
V
CM
= V
+
– 0.5V, NPN Mode
l
DV
OS
Input Offset Voltage Match
(Channel-to-Channel) (Note 8)
V
CM
= Half Supply
l
V
CM
= V
+
– 0.5V, NPN Mode
l
V
OS
T
C
I
B
Input Offset Voltage Drift
Input Bias Current (Note 7)
V
CM
= Half Supply
l
l
V
CM
= V
+
– 0.5V, NPN Mode
l
I
OS
Input Offset Current
V
CM
= Half Supply
l
V
CM
= V
+
– 0.5V, NPN Mode
l
e
n
i
n
C
IN
R
IN
A
VOL
Input Noise Voltage Density
Input 1/f Noise Voltage
Input Noise Current Density
Input Capacitance
Input Resistance
Large Signal Voltage Gain
f = 1MHz
f = 0.1Hz to 10Hz
f = 1MHz
Differential Mode
Common Mode
Differential Mode
Common Mode
R
L
= 1k to Half Supply
(Note 12)
R
L
= 100Ω to Half Supply
(Note 12)
16.5
7
2.3
1.8
36
6.9
5
嵌入式系统
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