Datasheet LTC6268-10, LTC6269-10 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual 4GHz Ultra-Low Bias Current FET Input Op Amp |
| Pages / Page | 22 / 1 — FEATURES. DESCRIPTION. Gain Bandwidth Product: 4GHz. Low Input Bias … |
| File Format / Size | PDF / 775 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. Gain Bandwidth Product: 4GHz. Low Input Bias Current:. ±3fA Typ. Room Temperature. 4pA Max at 125°C
Model Line for this Datasheet
Text Version of Document
LTC6268-10/LTC6269-10 4GHz Ultra-Low Bias Current FET Input Op Amp
FEATURES DESCRIPTION
n
Gain Bandwidth Product: 4GHz
The LTC®6268-10/LTC6269-10 is a single/dual 4GHz FET- n
Low Input Bias Current:
input operational amplifier with extremely low input bias n
±3fA Typ. Room Temperature
current and low input capacitance. It also features low n
4pA Max at 125°C
input-referred current noise and voltage noise making it an n
Current Noise (100kHz): 7fA/√Hz
ideal choice for high speed transimpedance amplifiers, and n
Voltage Noise (1MHz): 4.0nV/√Hz
high-impedance sensor amplifiers. It is a decompensated n
Extremely Low C
op amp that is gain-of-10 stable.
IN 0.45pF
n
Rail-to-Rail Output
It operates on 3.1V to 5.25V supply and consumes 16.5mA n AV ≥10 per amplifier. A shutdown feature can be used to lower n Slew Rate: +1500V/µs, –1000V/µs power consumption when the amplifier is not in use. n Supply Range: 3.1V to 5.25V n The LTC6268-10 single op amp is available in 8-lead SOIC Quiescent Current: 16.5mA and 6-lead SOT-23 packages. The SOIC package includes n Operating Temp Range: –40°C to 125°C two unconnected pins which can be used to create an input n Single in 8-Lead SO-8, 6-Lead TSOT-23 Packages pin guard ring to protect against board leakage currents. n Dual in 8-Lead MS8, 3mm × 3mm 10-Lead The LTC6269-10 dual op amp is available in 8-lead MSOP DFN 10 Packages with exposed pad and 3mm × 3mm 10-lead DFN packages. They are fully specified over the –40°C to 85°C and the
APPLICATIONS
–40°C to 125°C temperature ranges. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Transimpedance Amplifiers Technology Corporation. All other trademarks are the property of their respective owners. n ADC Drivers n Photomultiplier Tube Post-Amplifier n Low IBIAS Circuits
TYPICAL APPLICATION 20kΩ TIA Frequency Response 20kΩ Gain 210MHz Transimpedance Amplifier
90 87 84 PARASITIC 20kΩ FEEDBACK C 2.5V 81 78 2.5V PD 75 – 72 GAIN (dBΩ) I V PD LTC6268-10 OUT = –IPD • 20k BW = 210MHz 69 + 66 63 –2.5V 626810 TA01 60 PD = OSI OPTOELECTRONICS, FCI-125G-006 10k 100k 1M 10M 100M 1G FREQUENCY (Hz) 626810 TA01b 626810f For more information www.linear.com/LTC6268-10 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information 5.0V Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Schematic Operation Applications Information Package Description Typical Application Related Parts
FEATURES DESCRIPTION
n
Gain Bandwidth Product: 4GHz
The LTC®6268-10/LTC6269-10 is a single/dual 4GHz FET- n
Low Input Bias Current:
input operational amplifier with extremely low input bias n
±3fA Typ. Room Temperature
current and low input capacitance. It also features low n
4pA Max at 125°C
input-referred current noise and voltage noise making it an n
Current Noise (100kHz): 7fA/√Hz
ideal choice for high speed transimpedance amplifiers, and n
Voltage Noise (1MHz): 4.0nV/√Hz
high-impedance sensor amplifiers. It is a decompensated n
Extremely Low C
op amp that is gain-of-10 stable.
IN 0.45pF
n
Rail-to-Rail Output
It operates on 3.1V to 5.25V supply and consumes 16.5mA n AV ≥10 per amplifier. A shutdown feature can be used to lower n Slew Rate: +1500V/µs, –1000V/µs power consumption when the amplifier is not in use. n Supply Range: 3.1V to 5.25V n The LTC6268-10 single op amp is available in 8-lead SOIC Quiescent Current: 16.5mA and 6-lead SOT-23 packages. The SOIC package includes n Operating Temp Range: –40°C to 125°C two unconnected pins which can be used to create an input n Single in 8-Lead SO-8, 6-Lead TSOT-23 Packages pin guard ring to protect against board leakage currents. n Dual in 8-Lead MS8, 3mm × 3mm 10-Lead The LTC6269-10 dual op amp is available in 8-lead MSOP DFN 10 Packages with exposed pad and 3mm × 3mm 10-lead DFN packages. They are fully specified over the –40°C to 85°C and the
APPLICATIONS
–40°C to 125°C temperature ranges. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Transimpedance Amplifiers Technology Corporation. All other trademarks are the property of their respective owners. n ADC Drivers n Photomultiplier Tube Post-Amplifier n Low IBIAS Circuits
TYPICAL APPLICATION 20kΩ TIA Frequency Response 20kΩ Gain 210MHz Transimpedance Amplifier
90 87 84 PARASITIC 20kΩ FEEDBACK C 2.5V 81 78 2.5V PD 75 – 72 GAIN (dBΩ) I V PD LTC6268-10 OUT = –IPD • 20k BW = 210MHz 69 + 66 63 –2.5V 626810 TA01 60 PD = OSI OPTOELECTRONICS, FCI-125G-006 10k 100k 1M 10M 100M 1G FREQUENCY (Hz) 626810 TA01b 626810f For more information www.linear.com/LTC6268-10 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information 5.0V Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Schematic Operation Applications Information Package Description Typical Application Related Parts
