LT6221 Linear Technology Corporation, LT6221 Datasheet

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LT6221

Manufacturer Part Number
LT6221
Description
Single/dual/quad 60mhz, 20v/?s Low Power, Rail-to-rail Input And Output Precision Op Amp
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Gain Bandwidth Product: 60MHz
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Quiescent Current: 1mA Max
Input Offset Voltage: 350µ µ µ µ µ V Max
Input Bias Current: 150nA Max
Wide Supply Range: 2.2V to 12.6V
Large Output Current: 50mA Typ
Low Voltage Noise: 10nV√Hz Typ
Slew Rate: 20V/µs Typ
Common Mode Rejection: 102dB Typ
Power Supply Rejection: 105dB Typ
Open-Loop Gain: 100V/mV Typ
Operating Temperature Range: – 40°C to 85°C
Single in the 8-Pin SO and 5-Pin Low Profile
(1mm) ThinSOT
Dual in the 8-Pin SO and (3mm x 3mm) DFN
Packages
Quad in the 16-Pin SSOP Package
Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
Active Filters
Video Amplifiers
Fast Current Sensing Amplifiers
PHOTODIODE
~4pF
V
S
+
I
PD
Stepped-Gain Photodiode Amplifier
+
3.24k
100k
LT6220
TM
V
V
U
S
S
+
30pF
Packages
1pF
V
S
= ±1.5V TO ±5V
V
S
U
33k
20V/µs, Low Power, Rail-to-Rail Input
V
S
+
10k
LT1634-1.25
V
OUT
622012 TA01
and Output Precision Op Amps
DESCRIPTIO
The LT
power, high speed rail-to-rail input and output operational
amplifiers with excellent DC performance. The LT6220/
LT6221/LT6222 feature reduced supply current, lower
input offset voltage, lower input bias current and higher
DC gain than other devices with comparable bandwidth.
Typically, the LT6220/LT6221/LT6222 have an input off-
set voltage of less than 100µV, an input bias current of less
than 15nA and an open-loop gain of 100V/mV. The parts
have an input range that includes both supply rails and an
output that swings within 10mV of either supply rail to maxi-
mize the signal dynamic range in low supply applications.
The LT6220/LT6221/LT6222 maintain performance for
supplies from 2.2V to 12.6V and are specified at 3V, 5V
and ±5V supplies. The inputs can be driven beyond the
supplies without damage or phase reversal of the output.
The LT6220 is housed in the 8-pin SO package with the
standard op amp pinout as well as the 5-pin SOT-23
package. The LT6221 is available in 8-pin SO and DFN
(3mm × 3mm low profile dual fine pitch leadless) pack-
ages with the standard op amp pinout. The LT6222 fea-
tures the standard quad op amp configuration and is
available in the 16-Pin SSOP package. The LT6220/ LT6221/
LT6222 can be used as plug-in replacements for many op
amps to improve input/output range and performance.
ThinSOT is a trademark of Linear Technology Corporation.
Single/Dual/Quad 60MHz,
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
6220/LT6221/LT6222 are single/dual/quad, low
LT6220/LT6221/LT6222
50
45
40
35
30
25
20
15
10
5
0
–250
V
V
V
S
CM
OS
= 5V, 0V
= 0V
–150
U
INPUT OFFSET VOLTAGE (µV)
Distribution, V
(S8, PNP Stage)
–50 0
50
CM
150
= 0V
622012 G01
250
622012fa
1

Related parts for LT6221

LT6221 Summary of contents

Page 1

... The LT6220 is housed in the 8-pin SO package with the standard op amp pinout as well as the 5-pin SOT-23 package. The LT6221 is available in 8-pin SO and DFN (3mm × 3mm low profile dual fine pitch leadless) pack- ages with the standard op amp pinout. The LT6222 fea- tures the standard quad op amp configuration and is available in the 16-Pin SSOP package ...

Page 2

... – + PACKAGE 8-LEAD PLASTIC SO = 150°C, θ 190°C/W JMAX JA ORDER PART S8 PART NUMBER MARKING LT6221CS8 6221 LT6221IS8 6221I ORDER PART NUMBER 8 NC LT6220CS8 + LT6220IS8 6 V OUT S8 PART 5 NC MARKING 6220 = 190°C/W JA 6220I ...

Page 3

... 0. STEP LT6220/LT6221/LT6222 MIN TYP MAX 70 350 150 700 200 850 0.5 2.5 0.5 30 195 15 120 100 600 150 1100 15 150 250 600 15 175 20 250 15 100 ...

Page 4

... LT6220/LT6221/LT6222 ELECTRICAL CHARACTERISTICS temperature range 5V, 0V 3V, 0V SYMBOL PARAMETER V Input Offset Voltage OS ∆V Input Offset Voltage Shift OS Input Offset Voltage Match (Channel-to-Channel) V (Note Input Offset Voltage Drift (Note Input Bias Current B Input Bias Current Match (Channel-to-Channel) ...

Page 5

... Output Voltage Swing HIGH (Note Short-Circuit Current SC I Supply Current Per Amplifier S GBW Gain-Bandwidth Product SR Slew Rate LT6220/LT6221/LT6222 denotes the specifications which apply over the –40°C ≤ T ● The = V = half supply unless otherwise noted. (Note 5) CM OUT CONDITIONS ...

Page 6

... LT6220/LT6221/LT6222 ELECTRICAL CHARACTERISTICS = ±5V 25° 0V 0V, unless otherwise noted OUT SYMBOL PARAMETER V Input Offset Voltage OS ∆V Input Offset Voltage Shift OS Input Offset Voltage Match (Channel-to-Channel Input Bias Current B Input Bias Current Match (Channel-to-Channel) I Input Offset Current ...

Page 7

... S No Load I = 5mA SINK I = 20mA SINK No Load I = 5mA SOURCE I = 20mA SOURCE Frequency = 1MHz = ±4V – 1k ±2V Measure LT6220/LT6221/LT6222 A MIN TYP MAX ● 100 650 ● 180 900 ● 230 1300 ● 0.75 3 ● 0.75 3.5 ● 90 850 ● 90 1100 ● ...

Page 8

... Note 4: The LT6220C/LT6221C/LT6222C and LT6220I/LT6221I/LT6222I are guaranteed functional over the temperature range of –40°C and 85°C. Note 5: The LT6220C/LT6221C/LT6222C are guaranteed to meet specified performance from 0°C to 70°C. The LT6220C/LT6221C/LT6222C are designed, characterized and expected to meet specified performance from –40°C to 85°C but is not tested or QA sampled at these temperatures. The 8 denotes the specifications which apply over the – ...

Page 9

... Input Bias Current vs Temperature 0 5V 0.5 0.4 NPN ACTIVE 0.3 CM 0.2 0.1 PNP ACTIVE –0.1 –0.2 6 –55 – TEMPERATURE (°C) LT6220/LT6221/LT6222 V Distribution (S8, NPN Stage 5V 1000 –2000 –1200 –400 0 400 INPUT OFFSET VOLTAGE (µV) ...

Page 10

... LT6222 LT6220 LT6221 2 GN16 SOT5 = ±2.5V = ±2. ±2. –2 –4 –6 LT6222 LT6220 LT6221 GN16 SOT5 –8 = ± ± – TIME AFTER POWER-UP (SECONDS) Output Short-Circuit Current vs Power Supply Voltage 25° ...

Page 11

... – 20pF 10pF – –15 0 FREQUENCY (MHz) LT6220/LT6221/LT6222 Gain Bandwidth and Phase Margin vs Supply Voltage 25° GAIN BANDWIDTH PRODUCT PHASE MARGIN TOTAL SUPPLY VOLTAGE (V) Slew Rate vs Temperature ...

Page 12

... LT6220/LT6221/LT6222 W U TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 120 100 0.01 0 100 FREQUENCY (MHz) 622012 G28 Series Output Resistor vs Capacitive Load 5V ∞, UNLESS NOTED 10Ω ...

Page 13

... U U APPLICATIO S I FOR ATIO Circuit Description The LT6220/LT6221/LT6222 have an input and output signal range that covers from the negative power supply to the positive power supply. Figure 1 depicts a simplified schematic of the amplifier. The input stage comprises two differential amplifiers, a PNP stage, Q1/Q2, and an NPN stage, Q3/Q4, that are active over different ranges of common mode input voltage ...

Page 14

... LT6220/LT6221/LT6222 provide precision performance especially for high source impedance applications. Output D(MAX) The LT6220/LT6221/LT6222 can deliver a large output current, so the short-circuit current limit is set around 50mA to prevent damage to the device. Attention must be paid to keep the junction temperature of the IC below the 2 absolute maximum rating of 150° ...

Page 15

... For instance, the LT6220/ LT6221/LT6222, set up with a noninverting gain of 2, two 5k resistors and a capacitance of 5pF (part plus PC board), will probably oscillate. The pole is formed at 12.7MHz that will reduce phase margin by 52 degrees when the cross- over frequency of the amplifier is around 10MHz ...

Page 16

... Single 3V Supply, 1MHz, 4th Order Butterworth Filter The circuit shown in Figure 4 makes use of the low voltage operation and the wide bandwidth of the LT6221 to create a DC accurate 1MHz 4th order lowpass filter powered from a 3V supply. The amplifiers are configured in the inverting mode for the lowest distortion and the output can swing rail-to-rail for maximum dynamic range ...

Page 17

... ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE LT6220/LT6221/LT6222 R = 0.115 TYP 5 8 3.00 ±0.10 1.65 ± ...

Page 18

... LT6220/LT6221/LT6222 PACKAGE DESCRIPTIO 0.62 MAX 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 Package 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 0.95 REF 1.22 REF 1.50 – ...

Page 19

... TYP .008 – .012 (0.203 – 0.305) TYP INCHES (MILLIMETERS) LT6220/LT6221/LT6222 .189 – .197 (4.801 – 5.004) NOTE .150 – .157 (3.810 – 3.988) NOTE .004 – ...

Page 20

... LT6220/LT6221/LT6222 U TYPICAL APPLICATIO V ICM V ICM Figure 6. Buffered Gain of 2 Differential-In/Differential-Out Amplifier RELATED PARTS PART NUMBER DESCRIPTION LT1498/LT1499 Dual/Quad 10MHz, 6V/µs Rail-to-Rail Input/ Output C Op Amps LOAD LT1800/LT1801/LT1802 Single/Dual/Quad 80MHz, 25V/µs, Low Power Rail-to-Rail Input/Output Precision Op Amps LT1803/LT1804/LT1805 Single/Dual/Quad 85MHz, 100V/µs ...

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