LTC6248 Linear Technology Corporation, LTC6248 Datasheet
![no-image](/images/manufacturer_photos/0/3/389/linear_technology_corporation_sml.jpg)
LTC6248
Available stocks
Related parts for LTC6248
LTC6248 Summary of contents
Page 1
... For applications that require power-down, the LTC6246 and the LTC6247 in MS10 offer a shutdown pin which disables the amplifi er and reduces current consumption to 42μA. The LTC6246/LTC6247/LTC6248 can be used as plug-in replacements for many commercially available op amps to reduce power or to improve input/output range and performance. ...
Page 2
... LTC6246/LTC6247/LTC6248 ABSOLUTE MAXIMUM RATINGS + – Total Supply Voltage ( ................................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 PIN CONFIGURATION TOP VIEW OUT A 1 – – – PACKAGE 8-LEAD PLASTIC UTDFN (2mm 2mm) = 125° ...
Page 3
... LTC6248CMS#TRPBF LTC6248IMS#PBF LTC6248IMS#TRPBF LTC6248HMS#PBF LTC6248HMS#TRPBF TRM = 500 pieces. *Temperature grades are identifi label on the shipping container. Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
Page 4
... LTC6246/LTC6247/LTC6248 ELECTRICAL CHARACTERISTICS specifi ed temperature range, otherwise specifi cations are at T unless otherwise noted. SYMBOL PARAMETER I Input Common Mode Range CMR PSRR Power Supply Rejection Ratio Supply Voltage Range (Note 6) V Output Swing Low ( Output Swing High (V OH ...
Page 5
... Input 1/f Noise Voltage i Input Noise Current Density n C Input Capacitance IN R Input Resistance IN A Large Signal Voltage Gain VOL LTC6246/LTC6247/LTC6248 (V = 5V) l The denotes the specifi cations which apply across the S = 25°C. For each amplifi 5V, 0V CONDITIONS f ...
Page 6
... LTC6246/LTC6247/LTC6248 ELECTRICAL CHARACTERISTICS specifi ed temperature range, otherwise specifi cations are at T 1.35V, unless otherwise noted. SYMBOL PARAMETER CMRR Common Mode Rejection Ratio I Input Common Mode Range CMR PSRR Power Supply Rejection Ratio Supply Voltage Range (Note 6) V Output Swing Low (V – ...
Page 7
... Note 8: Matching parameters are the difference between amplifi ers A and D and between B and C on the LTC6248; between the two amplifi ers on the LTC6247. Note 9: Thermal resistance varies with the amount of PC board metal connected to the package. The specifi ...
Page 8
... LTC6246/LTC6247/LTC6248 TYPICAL PERFORMANCE CHARACTERISTICS + V Distribution – 0. (TSOT-23, NPN Stage 5V 4. –2000 –1200 –400 400 1200 INPUT OFFSET VOLTAGE (μ Temperature OS (MS10, PNP Stage) 1200 V = 2.7V 1.35V CM 1000 6 DEVICES 800 600 ...
Page 9
... (PNP Operation –55° 25°C 2 125°C 0 –2 2 2.5 3 3.5 4 4.5 TOTAL SUPPLY VOLTAGE (V) LTC6246/LTC6247/LTC6248 0.1Hz to 10Hz Voltage Noise 1 ±2.5V S 1.0 0.5 0 0.5 –1.0 –1.5 125 TIME (1s/DIV) 624678 G13 Supply Current Per Amplifi SHDN Pin Voltage 1 ...
Page 10
... LTC6246/LTC6247/LTC6248 TYPICAL PERFORMANCE CHARACTERISTICS Output Saturation Voltage vs Load Current (Output Low ±2. 125° 25° –55°C A 0.01 0.01 0 LOAD CURRENT (mA) Open Loop Gain 1000 T = 25°C A 900 V = 2.7V 800 R = 100 TO MID SUPPLY L 700 MID SUPPLY L 600 ...
Page 11
... R = 100Ω, 3RD L – 100Ω, 2ND L –80 – 1kΩ, 3RD L –100 –110 R = 1kΩ, 2ND L –120 0.01 0.1 1 FREQUENCY (MHz) LTC6246/LTC6247/LTC6248 Common Mode Rejection Ratio vs Frequency 110 100 – 100 1k 10k 100k 1M FREQUENCY (Hz) ...
Page 12
... LTC6246/LTC6247/LTC6248 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Frequency 2.7V) V – 100Ω, 3RD L – 100Ω, 2ND L –60 – 1kΩ, 2ND L – 1kΩ, 3RD –90 L –100 V = ±1.35V S –110 OUT P –120 0.01 0.1 1 FREQUENCY (MHz) Settling Time vs Output Step (Inverting) 200 ...
Page 13
... Positive Supply Voltage. Allowed applied voltage ranges from 2.5V to 5.25V when V APPLICATIONS INFORMATION Circuit Description The LTC6246/LTC6247/LTC6248 have an input and output signal range that extends from the negative power supply to the positive power supply. Figure 1 depicts a simplifi ed schematic of the amplifi er. The input stage is comprised of two differential amplifi ...
Page 14
... For common mode voltages ranging from 0.2V above the negative supply to 1.2V below the positive supply, the low input bias current of the LTC6246/ LTC6247/LTC6248 allows the amplifi ers to be used in ap- plications with high source resistances where errors due to voltage drops must be minimized. ...
Page 15
... LTC6248, which contains four amplifi ers. The LTC6248 is housed in a small 16-lead MS package and typically has a thermal resistance (θ necessary to ensure that the die’s junction temperature does not exceed 150° ...
Page 16
... LTC6246/LTC6247/LTC6248 TYPICAL APPLICATIONS 12-Bit ADC Driver Figure 3 shows the LTC6246 driving an LTC2366 12-bit A/D converter. The low wideband noise of the LTC6246 main- tains a 70dB SNR even without the use of an intermediate antialiasing RC fi lter single 3.3V supply with a 2.5V reference, a full –1dBFS output can be obtained without the amplifi ...
Page 17
... Figure 8. Single 2.7V Supply 4MHz 4th Order Butterworth Filter LTC6246/LTC6247/LTC6248 60dB 5.5MHz Gain Block Figure 6 shows the LTC6247 confi gured as a low power high gain high bandwidth block. Two amplifi ers each confi gured with a gain of 31V/V, are cascaded in series. A 660nF capacitor is used to limit the DC gain of the block to around 30dB to minimize output offset voltage ...
Page 18
... LTC6246/LTC6247/LTC6248 PACKAGE DESCRIPTION 2.55 ±0.05 0.64 ±0.05 1.15 ±0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED PIN 1 BAR TOP MARK (SEE NOTE 6) www.DataSheet4U.com 18 KC Package 8-Lead Plastic UTDFN (2mm × 2mm) (Reference LTC DWG # 05-08-1749 Rev Ø) 1.37 ± ...
Page 19
... MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX LTC6246/LTC6247/LTC6248 MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660 Rev F) 0. 889 ± ...
Page 20
... LTC6246/LTC6247/LTC6248 PACKAGE DESCRIPTION 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. www.DataSheet4U.com MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006" ...
Page 21
... MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX LTC6246/LTC6247/LTC6248 MS Package 16-Lead Plastic MSOP (Reference LTC DWG # 05-08-1669 Rev Ø) ...
Page 22
... LTC6246/LTC6247/LTC6248 PACKAGE DESCRIPTION 0.62 0.95 MAX REF 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING www.DataSheet4U.com 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...
Page 23
... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC6246/LTC6247/LTC6248 TS8 Package 8-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1637) 0 ...
Page 24
... LTC6246/LTC6247/LTC6248 TYPICAL APPLICATION 700kHz, 1MΩ Single Supply Photodiode Amplifi 1M 0.1pF NXP LTC6246 BF862 – C2 PD1 –3dB BW = 700kHz 6.8nF R3 OSRAM I = 2.2mA CC C3 FILM 1k SFH213 OUTPUT NOISE = 153μV 0.1μF OR NPO MEASURED ON A 1MHz 10k ...