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PDF LTC6269-10 Data sheet ( Hoja de datos )
| Número de pieza | LTC6269-10 | |
| Descripción | 4GHz Ultra-Low Bias Current FET Input Op Amp | |
| Fabricantes | Linear | |
| Logotipo |  |
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LTC6268-10/LTC6269-10
4GHz Ultra-Low Bias
Current FET Input Op Amp
FEATURES
nn Gain Bandwidth Product: 4GHz
nn Low Input Bias Current:
nn ±3fA Typ. Room Temperature
nn 4pA Max at 125°C
nn Current Noise (100kHz): 7fA/√Hz
nn Voltage Noise (1MHz): 4.0nV/√Hz
nn Extremely Low CIN 0.45pF
nn Rail-to-Rail Output
nn AV ≥10
nn Slew Rate: +1500V/µs, –1000V/µs
nn Supply Range: 3.1V to 5.25V
nn Quiescent Current: 16.5mA
nn Operating Temp Range: –40°C to 125°C
nn Single in 8-Lead SO-8, 6-Lead TSOT-23 Packages
nn Dual in 8-Lead MS8, 3mm × 3mm 10-Lead
DFN 10 Packages
APPLICATIONS
nn Transimpedance Amplifiers
nn ADC Drivers
nn Photomultiplier Tube Post-Amplifier
nn Low IBIAS Circuits
DESCRIPTION
The LTC®6268-10/LTC6269-10 is a single/dual 4GHz FET-
input operational amplifier with extremely low input bias
current and low input capacitance. It also features low
input-referred current noise and voltage noise making it an
ideal choice for high speed transimpedance amplifiers, and
high-impedance sensor amplifiers. It is a decompensated
op amp that is gain-of-10 stable.
It operates on 3.1V to 5.25V supply and consumes 16.5mA
per amplifier. A shutdown feature can be used to lower
power consumption when the amplifier is not in use.
The LTC6268-10 single op amp is available in 8-lead SOIC
and 6-lead SOT-23 packages. The SOIC package includes
two unconnected pins which can be used to create an input
pin guard ring to protect against board leakage currents.
The LTC6269-10 dual op amp is available in 8-lead MSOP
with exposed pad and 3mm × 3mm 10-lead DFN packages.
They are fully specified over the –40°C to 85°C and the
–40°C to 125°C temperature ranges.
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.
TYPICAL APPLICATION
20kΩ Gain 210MHz Transimpedance Amplifier
2.5V
PD
IPD
20kΩ
2.5V
–
LTC6268-10
+
PARASITIC
FEEDBACK C
VOUT = –IPD • 20k
BW = 210MHz
–2.5V
626810 TA01
PD = OSI OPTOELECTRONICS, FCI-125G-006
20kΩ TIA Frequency Response
90
87
84
81
78
75
72
69
66
63
60
10k
100k
1M 10M
FREQUENCY (Hz)
100M 1G
626810 TA01b
For more information www.linear.com/LTC6268-10
626810f
1
1 page  
LTC6268-10/LTC6269-10
3 .3V ELECTRICAL CHARACTERISTICS The l denotes specifications that apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VSUPPLY = 3.3V (V+ = 3.3V, V– = 0V, VCM = mid-supply), RL = 1kΩ,
VSHDN is unconnected.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VOS Input Offset Voltage
VCM = 1.0V
–0.7
l –3
0.2
0.7
3
mV
mV
VCM = 2.3V
–1.0
l –4.5
0.2
1.0
4.5
mV
mV
TC VOS Input Offset Voltage Drift
IB Input Bias Current (Notes 6, 8)
VCM = 1.0V
VCM = 1.0V
LTC6268I-10/LTC6269I-10
LTC6268H-10/LTC6269H-10
4 µV/C
–20
l –900
l –4
±3
20
900
4
fA
fA
pA
VCM = 2.3V
–20
LTC6268I-10/LTC6269I-10 l –900
LTC6268H-10/LTC6269H-10
l –4
±3
20
900
4
fA
fA
pA
IOS Input Offset Current (Notes 6, 8)
VLTCCM6=2618.0I-V10/LTC6269I-10 l ––44500
LTC6268H-10/LTC6269H-10
l –2
±6
40
450
2
fA
fA
pA
en Input Voltage Noise Density, VCM =1.0V f = 1MHz
Input Voltage Noise Density, VCM = 2.3V f = 1MHz
Input Referred Noise Voltage
f = 0.1Hz to 10Hz
in Input Current Noise Density, VCM = 1.0V f = 100kHz
Input Current Noise Density, VCM = 2.3V f = 100kHz
RIN Input Resistance
Differential
Common Mode
4.0
4.0
13.5
7
7
>1000
>1000
nV/√Hz
nV/√Hz
μVP-P
fA/√Hz
fA/√Hz
GΩ
GΩ
CIN Input Capacitance
Differential (DC to 200MHz)
Common Mode (DC to 100MHz)
0.1 pF
0.45 pF
CMRR Common Mode Rejection Ratio
VCM = 0.5V to 1.2V (PNP Side)
63
l 60
90
dB
dB
VCM = –0.1V to 2.8V (Full Range)
60
l 50
77
dB
dB
IVR Input Voltage Range
Guaranteed by CMRR
l –0.1
2.8 V
AV Open Loop Voltage Gain
VOUT = 0.5V to 2.8V
RLOAD = 10k
80
l 40
200
V/mV
V/mV
RLOAD = 100
10
l2
18
V/mV
V/mV
VOL
Output Swing Low
(Input Overdrive 30mV).
Measured from V–
ISINK = 10mA
ISINK = 25mA
80 140
mV
l 200 mV
140 200
mV
l 260 mV
VOH Output Swing High
(Input Overdrive 30mV).
Measured from V+
ISOURCE = 10mA
ISOURCE = 25mA
80 140
mV
l 200 mV
170 270
mV
l 370 mV
ISC Output Short Circuit Current (Note 9)
50
l 35
80
mA
mA
IS Supply Current per Amplifier
14.5 16 17.5
l9
25
mA
mA
For more information www.linear.com/LTC6268-10
626810f
5
5 Page 
LTC6268-10/LTC6269-10
SIMPLIFIED SCHEMATIC
LTC6268-10 Simplified Schematic Diagram
V+
D2
INPUT REPLICA
COMPLEMENTARY
I0 INPUT STAGE
C0
Q1
Q3 Q9 Q4
D0
+IN
CMOS INPUT
BUFFER
–IN
Q5 Q6
D6
SHDN
D7
V–
D1
INPUT REPLICA
D3
Q7
REFERENCE
GENERATION
(ONE POLARITY SHOWN IN INPUT PINS)
Q8
BUFFER
D4
OUT
Q2 D5
626810 BD
For more information www.linear.com/LTC6268-10
626810f
11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet LTC6269-10.PDF ] | |
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