LTC6252 Linear Technology, LTC6252 Datasheet

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LTC6252

Manufacturer Part Number
LTC6252
Description
3.5mA Power Efficient Rail-to-Rail I/O Op Amps
Manufacturer
Linear Technology
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC6252CS6
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC6252HS6
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC6252IS6
Manufacturer:
LT
Quantity:
10 000
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TYPICAL APPLICATION
FEATURES
APPLICATIONS
(3.5V + 27.4mV)
Gain Bandwidth Product: 720MHz
–3dB Frequency (A
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
Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifi ers
Active Filters
Battery Powered Equipment
27.4mV TO
V
IN
845Ω
+
½ LTC6253
143Ω
5V
2.5k
V
= 1): 400MHz
~2.08V
2.5k
+
½ LTC6253
5V Single-Supply 16-Bit ADC Driver
5V
3900pF
249Ω
249Ω
100Ω
100Ω
10μF
IN
IN
+
0.1μF
VCM
AVP
5V
REFIN
10μF
REFOUT
10μF
1μF
DESCRIPTION
CNVST
The LTC
power, high speed unity gain stable rail-to-rail input/output
operational amplifi ers. 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 effi ciency performance
from supply voltage levels of 2.5V to 5.25V and is fully
specifi ed 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 amplifi er 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.
0.1μF
LTC6252/LTC6253/LTC6254
LTC2393-16
PD
DVP
SAMPLE CLOCK
5V
RESET
GND
®
4.7μF
1.8V TO 5V
6252/LTC6253/LTC6254 are single/dual/quad low
720MHz, 3.5mA Power
OGND
OVP
INTERFACE
BYTESWAP
PARALLEL
SERIAL
SER/PAR
Effi cient Rail-to-Rail
OR
OB/2C
625234 TA01
BUSY
RD
CS
16 BIT
I/O Op Amps
–100
–120
–140
–160
–20
–40
–60
–80
0
16-Bit ADC 5V Single-Supply
LTC6253 Driving LTC2393-16
0
100
Performance
FREQUENCY (kHz)
200
300
f
F1 = 20.111kHz
F1 AMPLITUDE
SNR = 93.28dB
THD = –100.50dB
SINAD = 92.53dB
SFDR = 104.7dB
F2 = –106.39dBc
F3 = –104.70dBc
F4 = –114.13dBc
F5 = –105.48dBc
S
= 1Msps
= –1.032dBFS
400
624678 TA01b
625234f
1
500

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LTC6252 Summary of contents

Page 1

... LTC6253 in MS10 offer a shutdown pin which disables the amplifi er 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 ...

Page 2

... SHDNA 5 MS PACKAGE 10-LEAD PLASTIC MSOP = 150°C, θ 160°C/W (NOTE 9) JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC6252CS6#TRMPBF LTC6252CS6#TRPBF LTC6252IS6#TRMPBF LTC6252IS6#TRPBF LTC6252HS6#TRMPBF LTC6252HS6#TRPBF LTC6253CDC#TRMPBF LTC6253CDC#TRPBF LTC6253IDC#TRMPBF LTC6253IDC#TRPBF LTC6253CMS8#PBF LTC6253CMS8#TRPBF LTC6253IMS8#PBF LTC6253IMS8#TRPBF LTC6253CTS8#TRMPBF LTC6253CTS8#TRPBF LTC6253ITS8#TRMPBF LTC6253ITS8#TRPBF LTC6253HTS8#TRMPBF LTC6253HTS8#TRPBF ...

Page 3

... C Input Capacitance IN R Input Resistance IN A Large Signal Voltage Gain VOL CMRR Common Mode Rejection Ratio LTC6252/LTC6253/LTC6254 PART MARKING* PACKAGE DESCRIPTION LTFSB 10-Lead Plastic MSOP LTFSB 10-Lead Plastic MSOP 6254 16-Lead Plastic MSOP 6254 16-Lead Plastic MSOP 6254 16-Lead Plastic MSOP http://www ...

Page 4

... DataSheet.in LTC6252/LTC6253/LTC6254 ELECTRICAL CHARACTERISTICS specifi ed temperature range, otherwise specifi cations are at T unless otherwise noted. SYMBOL PARAMETER V Input Common Mode Range CMR PSRR Power Supply Rejection Ratio Supply Voltage Range (Note 6) V Output Swing Low ( Output Swing High (V ...

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 LTC6252/LTC6253/LTC6254 (V = 5V) The l denotes the specifi cations which apply across the S = 25°C. For each amplifi 5V, 0V CONDITIONS f ...

Page 6

... DataSheet.in LTC6252/LTC6253/LTC6254 ELECTRICAL CHARACTERISTICS specifi ed temperature range, otherwise specifi cations are at T 1.35V, unless otherwise noted. SYMBOL PARAMETER CMRR Common Mode Rejection Ratio V Input Common Mode Range CMR PSRR Power Supply Rejection Ratio Supply Voltage Range (Note 6) V Output Swing Low (V ...

Page 7

... QA sampled at these temperatures. The LTC6252I/LTC6253I/LTC6254I are guaranteed to meet specifi ed performance from –40°C to 85°C. The LTC6252H/ LTC6253H/LTC6254H are guaranteed to meet specifi ed performance from –40°C to 125°C. ...

Page 8

... DataSheet.in LTC6252/LTC6253/LTC6254 TYPICAL PERFORMANCE CHARACTERISTICS V Distribution (TSOT-23, NPN Stage 5V 4. –2000 –1200 –400 400 INPUT OFFSET VOLTAGE (μ Temperature 2.7V, 0V (MS, PNP Stage) S 1200 V = 2.7V 1.35V CM 1100 6 DEVICES 1000 900 ...

Page 9

... A –1.25 –1.50 –1. 125°C A –2.00 –2.25 –2.50 –2.75 –3.00 0 0.5 1 1.5 2 2.5 3 SHDN PIN VOLTAGE (V) LTC6252/LTC6253/LTC6254 0.1Hz to 10Hz Voltage Noise 2000 1500 1000 500 0 –500 –1000 –1500 –2000 125 TIME (1s/DIV) 624678 G13 Supply Current vs Input Common Mode Voltage (Per Amplifi ...

Page 10

... DataSheet.in LTC6252/LTC6253/LTC6254 TYPICAL PERFORMANCE CHARACTERISTICS Output Saturation Voltage vs Load Current (Output High ±2. 25°C A 0.1 0.01 0.01 0.1 1 LOAD CURRENT (mA) Open Loop Gain 500 400 300 R = 100Ω TO MID SUPPLY L 200 MID SUPPLY L 100 0 –100 GND L –200 –300 R = 100Ω ...

Page 11

... S 90 500Ω 80 – 20Ω 50Ω 100 1000 CAPACITIVE LOAD (pF) LTC6252/LTC6253/LTC6254 Output Impedance vs Frequency 80 1000 V = ±2. ±2. 100 ±1.35V 0 ±2. ...

Page 12

... DataSheet.in LTC6252/LTC6253/LTC6254 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Frequency ( 5V) V – ±2.5V S – OUT P –40 V – 1k, 3RD L – 100Ω, 3RD L –70 –80 R –90 –100 R –110 L –120 –130 0.01 0.1 1 FREQUENCY (MHz) 0.1% Settling Time vs Output Step (Noninverting ±2. – ...

Page 13

... Positive Supply Voltage. Total supply voltage ranges from 2.5V to 5.25V. APPLICATIONS INFORMATION Circuit Description The LTC6252/LTC6253/LTC6254 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

... Input Bias Current The LTC6252 family uses a bias current cancellation cir- cuit to compensate for the base current of the PNP input pair. This results in a typical I input common mode voltage is less than 200mV, the bias cancellation circuit is no longer effective and the input bias current magnitude can reach a value above 4μ ...

Page 15

... LTC6252/LTC6253/LTC6254 Power Dissipation The LTC6252 and LTC6253 contain one and two amplifi ers respectively. Hence the maximum on-chip power dis- sipation for them will be less than the maximum on-chip power dissipation for the LTC6254, which contains four amplifi ...

Page 16

... DataSheet.in LTC6252/LTC6253/LTC6254 TYPICAL APPLICATIONS 5V Single-Supply 16-Bit ADC Driver Figure 3 shows the LTC6253 driving an LTC2393-16 16-bit A/D converter on a single 5V supply. The low wideband noise of the LTC6253 helps to achieve better than 93dB SNR. A gain of 1.17V/V is taken in the fi rst amplifi er, giv- ing an input voltage range of 3.5V to the ADC. By taking a small amount of gain, a – ...

Page 17

... Figure 5. Low Noise Gain Block Using Parallel Channels LTC6252/LTC6253/LTC6254 Multiplexing Channels The LTC6252 and LTC6253 are available with shutdown pins in the SOT-23 and MS10 packages. While this allows for reduced power consumption, it also makes the parts suitable for high output impedance applications such as muxing. During shutdown, the bases of the amplifi ...

Page 18

... Figure 8 shows a three op amp instrumentation amplifi er with a gain of 41V/V which can operate on low supplies. Op amps U1 and U2 are channels from an LTC6253. Op amp U3 can be an LTC6252 or one channel of an LTC6253. Figure 9 shows the measured frequency re- sponse of the instrumentation amplifi er for a load of 1kΩ. ...

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 LTC6252/LTC6253/LTC6254 DC Package 8-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1719 Rev A) ...

Page 20

... DataSheet.in LTC6252/LTC6253/LTC6254 PACKAGE DESCRIPTION 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP 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. 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 LTC6252/LTC6253/LTC6254 MS Package 16-Lead Plastic MSOP (Reference LTC DWG # 05-08-1669 Rev Ø) ...

Page 22

... DataSheet.in LTC6252/LTC6253/LTC6254 PACKAGE DESCRIPTION 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...

Page 23

... NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 LTC6252/LTC6253/LTC6254 TS8 Package 8-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1637) 0.65 REF 1.22 REF 1.50 – ...

Page 24

... ADC Serial I/O LTC2365 1Msps, 12-Bit ADC Serial I/O 24 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 R1 1M 0.1pF 3V + LTC6252 V ≈ 0. • 1M OUT PD – –3dB BW = 2MHz I = 4.5mA CC C3 OUTPUT NOISE = 360μV RMS 0.1μF ...

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