LTC6244
1
6244fb
Dual 50MHz, Low Noise,
Rail-to-Rail, CMOS Op Amp
The LTC
®
6244 is a dual high speed, unity-gain stable CMOS
op amp that features a 50MHz gain bandwidth, 40V/µs slew
rate, 1pA of input bias current, low input capacitance and
rail-to-rail output swing. The 0.1Hz to 10Hz noise is just
1.5µV
P-P
and 1kHz noise is guaranteed to be less than
12nV/√Hz. This excellent AC and noise performance is
combined with wide supply range operation, a maximum
offset voltage of just 100µV and drift of only 2.5µV/°C,
making it suitable for use in many fast signal processing
applications, such as photodiode amplifi ers.
This op amp has an output stage that swings within 35mV
of either supply rail to maximize the signal dynamic range
in low supply applications. The input common mode
range extends to the negative supply. It is fully specifi ed
on 3V and 5V, and an HV version guarantees operation
on supplies of ±5V.
The LTC6244 is available in the 8-pin MSOP, and for com-
pact designs, it is packaged in the tiny dual fi ne pitch lead
free (DFN) package.
n
Photodiode Amplifi ers
n
Charge Coupled Amplifi ers
n
Low Noise Signal Processing
n
Active Filters
n
Medical Instrumentation
n
High Impedance Transducer Amplifi er
n
Input Bias Current: 1pA (Typ at 25°C)
n
Low Offset Voltage: 100μV Max
n
Low Offset Drift: 2.5μV/°C Max
n
0.1Hz to 10Hz Noise: 1.5µV
P-P
n
Slew Rate: 40V/µs
n
Gain Bandwidth Product: 50MHz
n
Output Swings Rail-to-Rail
n
Supply Operation:
2.8V to 6V LTC6244
2.8V to ±5.25V LTC6244HV
n
Low Input Capacitance: 2.1pF
n
Available in 8-Pin MSOP and Tiny DFN Packages
Very Low Noise Large Area Photodiode
V
OS
Distribution
TYPICAL APPLICATION
DESCRIPTION
FEATURES
APPLICATIONS
5V
V
OUT
= 1M • I
PD
BW = 350kHz
NOISE = 291nV AT 10kHz
5V
V
BB
I
PD
1M
PHILIPS
BF862
JFET
HAMAMATSU LARGE AREA
PHOTODIODE
S1227-1010BQ
C
PD
= 3000pF
* CAN BE MICROPHONIC, FILM, X7R, IF NEEDED.
0.25pF
–5V
6244 TA01a
+
1/2
LTC6244HV
–5V
4.99k
4.7µF*
4.99k
V
OUT
INPUT OFFSET VOLTAGE (µV)
–60 –40
NUMBER OF UNITS
60
80
100
120
60
6244 TA01b
40
20
50
70
90
110
30
10
0
–20
0
20 40
LTC6244MS8
V
S
= 5V, 0V
V
CM
= 2.5V
T
A
= 25°C
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.
LTC6244
2
6244fb
Total Supply Voltage (V
+
to V
)
LTC6244 ..................................................................7V
LTC6244HV ...........................................................12V
Input Voltage .......................... (V
+
+ 0.3V) to (V
– 0.3V)
Input Current ........................................................±10mA
Output Short Circuit Duration (Note 2)............. Indefi nite
Operating Temperature Range
LTC6244C ............................................ –40°C to 85°C
LTC6244I.............................................. –40°C to 85°C
LTC6244H .......................................... –40°C to 125°C
(Note 1)
Specifi ed Temperature Range (Note 3)
LTC6244C ................................................ 0°C to 70°C
LTC6244I.............................................. –40°C to 85°C
LTC6244H .......................................... –40°C to 125°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
ABSOLUTE MAXIMUM RATINGS
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LTC6244CDD#PBF LTC6244CDD#TRPBF LCCF
8-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LTC6244HVCDD#PBF LTC6244HVCDD#TRPBF LCGD
8-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LTC6244IDD#PBF LTC6244IDD#TRPBF LCCF
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LTC6244HVIDD#PBF LTC6244HVIDD#TRPBF LCGD
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LTC6244HDD#PBF LTC6244HDD#TRPBF LCCF
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC6244HVHDD#PBF LTC6244HVHDD#TRPBF LCGD
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC6244CMS8#PBF LTC6244CMS8#TRPBF LTCCM 8-Lead Plastic MSOP 0°C to 70°C
LTC6244HVCMS8#PBF LTC6244HVCMS8#TRPBF LTCGF 8-Lead Plastic MSOP 0°C to 70°C
LTC6244IMS8#PBF LTC6244IMS8#TRPBF LTCCM 8-Lead Plastic MSOP –40°C to 85°C
LTC6244HVIMS8#PBF LTC6244HVIMS8#TRPBF LTCGF 8-Lead Plastic MSOP –40°C to 85°C
LTC6244HMS8#PBF LTC6244HMS8#TRPBF LTCCM 8-Lead Plastic MSOP –40°C to 125°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
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
TOP VIEW
9
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1OUT A
–IN A
+IN A
V
V
+
OUT B
–IN B
+IN B
B
A
T
JMAX
= 150°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 9) CONNEECTED TO V
(PCB CONNECTION OPTIONAL)
1
2
3
4
OUT A
–IN A
+IN A
V
8
7
6
5
V
+
OUT B
–IN B
+IN B
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 250°C/W
PIN CONFIGURATION
LTC6244
3
6244fb
(LTC6244C/I, LTC6244HVC/I) The l denotes the specifi cations which apply
over the specifi ed temperature range, otherwise specifi cations are at T
A
= 25°C. V
S
= 5V, 0V, V
CM
= 2.5V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 4) MS8 Package
0°C to 70°C
–40°C to 85°C
l
l
40 100
225
300
µV
µV
µV
DD Package
0°C to 70°C
–40°C to 85°C
l
l
100 650
800
950
µV
µV
µV
V
OS
Match Channel-to-Channel (Note 5) MS8 Package
0°C to 70°C
–40°C to 85°C
l
l
40 160
275
325
µV
µV
µV
DD Package
0°C to 70°C
–40°C to 85°C
l
l
150 800
900
1.1
µV
µV
mV
TC V
OS
Input Offset Voltage Drift, MS8 (Note 6)
l
0.7 2.5 µV/°C
I
B
Input Bias Current (Notes 4, 7)
l
1
75
pA
pA
I
OS
Input Offset Current (Notes 4, 7)
l
0.5
75
pA
pA
Input Noise Voltage 0.1Hz to 10Hz 1.5 µV
P-P
e
n
Input Noise Voltage Density f = 1kHz 8 12 nV/√Hz
i
n
Input Noise Current Density (Note 8) 0.56 fA/√Hz
R
IN
Input Resistance Common Mode 10
12
C
IN
Input Capacitance
Differential Mode
Common Mode
f = 100kHz
3.5
2.1
pF
pF
V
CM
Input Voltage Range Guaranteed by CMRR
l
0 3.5 V
CMRR Common Mode Rejection 0V ≤ V
CM
≤ 3.5V
l
74 105 dB
CMRR Match
Channel-to-Channel (Note 5)
l
72 100 dB
A
VOL
Large Signal Voltage Gain V
O
= 1V to 4V
R
L
= 10k to V
S
/2
0°C to 70°C
–40°C to 85°C
l
l
1000
600
450
2500 V/mV
V/mV
V/mV
V
O
= 1.5V to 3.5V
R
L
= 1k to V
S
/2
0°C to 70°C
–40°C to 85°C
l
l
300
200
150
1000 V/mV
V/mV
V/mV
V
OL
Output Voltage Swing Low (Note 9) No Load
I
SINK
= 1mA
I
SINK
= 5mA
l
l
l
15
40
150
35
75
300
mV
mV
mV
V
OH
Output Voltage Swing High (Note 9) No Load
I
SOURCE
= 1mA
I
SOURCE
= 5mA
l
l
l
15
45
175
35
75
325
mV
mV
mV
PSRR Power Supply Rejection V
S
= 2.8V to 6V, V
CM
= 0.2V
l
75 105 dB
PSRR Match
Channel-to-Channel (Note 5)
l
73 100 dB
Minimum Supply Voltage (Note 10)
l
2.8 V
I
SC
Short-Circuit Current
l
25 35 mA
I
S
Supply Current per Amplifi er
l
6.25 7.4 mA
ELECTRICAL CHARACTERISTICS

LTC6244HMS8#PBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Precision Amplifiers 2x 50MHz, L N, R2R, CMOS Op Amp
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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