Datasheet

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LT6220/LT6221/LT6222

622012fb

For more information www.linear.com/LT6220/LT6221/LT6222

Typical applicaTion

Single/Dual/Quad 60MHz,

20V/µs, Low Power, Rail-to-Rail Input

and Output Precision Op Amps

The LT

6220/LT6221/LT6222 are single/dual/quad, low

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 offset

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 maximize

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-lead SO package with the

standard op amp pinout as well as the 5-lead SOT-23

package. The LT6221 is available in 8-lead SO and DFN

(3mm × 3mm low

profile dual fine pitch leadless) packages

with the standard op amp pinout. The LT6222 features the

standard quad op amp configuration and is available in

the 16-lead SSOP package. The LT6220/LT6221/LT6222

can be used as plug-in replacements for many op amps

to improve input/output range and performance.

applicaTions

Gain Bandwidth Product: 60MHz

Input Common Mode Range Includes Both Rails

Output Swings Rail-to-Rail

Low Quiescent Current: 1mA Max

Input Offset Voltage: 350µV 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-Lead SO and 5-Lead Low Profile

(1mm) ThinSOT™ Packages

Dual in the 8-Lead SO and (3mm × 3mm) DFN

Packages

Quad in the 16-Lead 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

Stepped-Gain Photodiode Amplifier

Distribution, V

= 0V

(S8, PNP Stage)

–

PHOTODIODE

~4pF

–

LT6220

100k

3.24k

33k

10k

1pF

30pF

LT1634-1.25

OUT

= ±1.5V TO ±5V

OUT

= 0V TO –1.25V, TRANSIMPEDANCE = 100k

OUT

–1.25V, TRANSIMPEDANCE = (100k || 3.24k) = 3.14k

622012 TA01a

INPUT OFFSET VOLTAGE (µV)

–250

PERCENT OF UNITS (%)

150

622012 TA01b

–150

–50 0

250

= 5V, 0V

= 0V

L, LT, LTC , LT M, Linear Technology and the Linear logo are registered trademarks and

ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

FeaTures DescripTion

Summary of content (22 pages)

PAGE 1
LT6220/LT6221/LT6222 Single/Dual/Quad 60MHz, 20V/µs, Low Power, Rail-to-Rail Input and Output Precision Op Amps Description Features n n n n n n n n n n n n n n n n n Gain Bandwidth Product: 60MHz Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Low Quiescent Current: 1mA Max Input Offset Voltage: 350µV Max Input Bias Current: 150nA Max Wide Supply Range: 2.2V to 12.
PAGE 2
LT6220/LT6221/LT6222 Absolute Maximum Ratings (Note 1) Total Supply Voltage (VS – to VS+)........................... 12.6V Input Voltage (Note 2)................................................ ±VS Input Current (Note 2)........................................... ±10mA Output Short Circuit Duration (Note 3)............. Indefinite Operating Temperature Range (Note 4)....–40°C to 85°C Specified Temperature Range (Note 5).....–40°C to 85°C Maximum Junction Temperature...........................
PAGE 3
LT6220/LT6221/LT6222 Electrical Characteristics TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER CONDITIONS TYP MAX UNITS VOS Input Offset Voltage VCM = 0V VCM = 0V (DD Package) VCM = 0V (S5 Package) VCM = VS VCM = VS (S5 Package) 70 150 200 0.5 0.5 350 700 850 2.5 3 µV µV µV mV mV ∆VOS Input Offset Voltage Shift VS = 5V, VCM = 0V to 3.5V VS = 3V, VCM = 0V to 1.
PAGE 4
LT6220/LT6221/LT6222 Electrical Characteristics The l denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER TYP MAX UNITS VOS Input Offset Voltage VCM = 0V VCM = 0V (DD Package) VCM = 0V (S5 Package) VCM = VS VCM = VS (S5 Package) l l l l l 90 180 230 0.5 0.5 500 850 1250 3 3.5 µV µV µV mV mV ∆VOS Input Offset Voltage Shift VS = 5V, VCM = 0V to 3.5V VS = 3V, VCM = 0V to 1.
PAGE 5
LT6220/LT6221/LT6222 Electrical Characteristics The l denotes the specifications which apply over the –40°C ≤ TA ≤ 85°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 5) TYP MAX UNITS VOS SYMBOL PARAMETER Input Offset Voltage VCM = 0V VCM = 0V (DD Package) VCM = 0V (S5 Package) VCM = VS VCM = VS (S5 Package) l l l l l 125 300 350 0.75 1 700 1300 2000 3.5 4.5 µV µV µV mV mV ∆VOS Input Offset Voltage Shift VS = 5V, VCM = 0V to 3.
PAGE 6
LT6220/LT6221/LT6222 Electrical Characteristics TA = 25°C, VS = ±5V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS TYP MAX UNITS VOS Input Offset Voltage VCM = –5V VCM = –5V (DD Package) VCM = –5V (S5 Package) VCM = 5V VCM = 5V (S5 Package) 80 150 200 0.7 0.7 500 750 900 2.5 3 µV µV µV mV mV ∆VOS Input Offset Voltage Shift VCM = –5V to 3.
PAGE 7
LT6220/LT6221/LT6222 Electrical Characteristics The l denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = ±5V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = –5V VCM = –5V (DD Package) VCM = –5V (S5 Package) VCM = 5V VCM = 5V (S5 Package) ∆VOS Input Offset Voltage Shift VCM = –5V to 3.5V TYP MAX UNITS l l l l l MIN 100 180 230 0.75 0.75 650 900 1300 3 3.
PAGE 8
LT6220/LT6221/LT6222 Electrical Characteristics The l denotes the specifications which apply over the –40°C ≤ TA ≤ 85°C temperature range. VS = ±5V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 5) SYMBOL PARAMETER CONDITIONS MIN VOS Input Offset Voltage VCM = –5V VCM = –5V (DD Package) VCM = –5V (S5 Package) VCM = 5V VCM = 5V (S5 Package) ∆VOS Input Offset Voltage Shift VCM = – 5V to 3.5V TYP MAX UNITS l l l l l 150 300 350 0.75 1 800 1300 2000 3.5 4.
PAGE 9
LT6220/LT6221/LT6222 Typical Performance Characteristics VOS Distribution, VCM = 0V (S8, PNP Stage) VOS Distribution, VCM = 0V (SOT5, PNP Stage) 50 50 50 40 40 40 35 30 25 20 15 VS = 5V, 0V 45 VCM = 5V PERCENT OF UNITS (%) VS = 5V, 0V 45 VCM = 0V PERCENT OF UNITS (%) 35 30 25 20 15 30 25 20 15 10 10 5 5 5 0 –250 0 –1000 –150 150 –50 0 50 INPUT OFFSET VOLTAGE (µV) 250 –600 600 –200 0 200 INPUT OFFSET VOLTAGE (µV) 622012 G01 700 35 30 25 20 15 10 5 500 2 TA = 125°C TA = 25°C 1 0 1
PAGE 10
LT6220/LT6221/LT6222 Typical Performance Characteristics Output Saturation Voltage vs Load Current (Output High) 1 TA = 125°C TA = 25°C 0.01 TA = –55°C 0.001 0.01 0.1 1 10 LOAD CURRENT (mA) 0.4 0.2 TA = 25°C 0 TA = 125°C –0.2 –0.4 –0.6 100 TA = –55°C 0 1 1.5 2 2.5 3 3.5 4 4.
PAGE 11
LT6220/LT6221/LT6222 Typical Performance Characteristics Input Current Noise vs Frequency 800 VS = 5V, 0V 600 1.5 PNP ACTIVE VCM = 2.5V 200 0 –200 –400 NPN ACTIVE VCM = 4.25V 0.5 0 0.01 0.1 1 10 FREQUENCY (kHz) –800 100 1 0 3 8 4 5 6 7 TIME (SECONDS) 9 60 50 95 40 40 GAIN 20 VS = ±5V –20 0 –40 –60 –20 10k 15 100k 1M 10M FREQUENCY (Hz) 3 3 VS = ±2.5V VS = ±5V –9 –9 –12 1 10 FREQUENCY (MHz) 100 622012 G25 20 VS = ±2.
PAGE 12
LT6220/LT6221/LT6222 Typical Performance Characteristics 120 VS = 5V, 0V POWER SUPPLY REJECTION RATIO (dB) 100 80 60 40 20 0 0.01 0.1 50 VS = 5V, 0V 45 AV = 1 RL = ∞, UNLESS NOTED 40 VS = 5V, 0V 100 POSITIVE SUPPLY 80 60 NEGATIVE SUPPLY 40 –30 –40 0.01 0.1 1 FREQUENCY (MHz) 10 30 ROS = 10Ω 15 0 –40 10000 VS = 5V, 0V AV = 2 VOUT = 2VP-P –50 RL = 150Ω, 2ND –60 RL = 150Ω, 3RD –70 RL = 1k, 2ND –80 0.
PAGE 13
LT6220/LT6221/LT6222 Typical Performance Characteristics ±5V Large-Signal Response ±5V Small-Signal Response 2V/DIV 50mV/DIV 0V 0V Output Overdriven Recovery VIN 1V/DIV 0V VOUT 2V/DIV 0V VS = ±5V AV = 1 RL = 1k 200ns/DIV VS = ±5V AV = 1 RL = 1k 622012 G38 50ns/DIV 200ns/DIV VS = 5V, 0V AV = 2 RL = 1k 622012 G39 622012 G40 Applications Information Circuit Description tail current, I1, to the current mirror, Q6/Q7, activating the NPN differential pair and the PNP pair becomes inactive for th
PAGE 14
LT6220/LT6221/LT6222 Applications Information A pair of complementary common emitter stages Q14/Q15 that enable the output to swing from rail-to-rail construct the output stage. The capacitors C2 and C3 form the local feedback loops that lower the output impedance at high frequency. These devices are fabricated by Linear Technology’s proprietary high speed complementary bipolar process.
PAGE 15
LT6220/LT6221/LT6222 Applications Information is severely overdriven, an external resistor should be used to limit the overdriven current. The LT6220/LT6221/LT6222’s input stages are also protected against a large differential input voltage of 1.4V or higher by a pair of back-to-back diodes, D5/D8, to prevent the emitter-base breakdown of the input transistors. The current in these diodes should be limited to less than 10mA when they are active.
PAGE 16
LT6220/LT6221/LT6222 Typical Applications As the signal level increases though, the output of the op amp goes more negative. At 12.5µA of photodiode current, the 100kΩ gain dictates that the LT6220 output will be about 1.25V below ground. However, at that point the emitter of Q2 will be at ground, and the base of Q1 will be 1V below ground. Thus, Q1 turns on and photodiode current starts to flow through R2. The transimpedance gain is therefore now reduced to R1||R2, or about 3.1kΩ.
PAGE 17
LT6220/LT6221/LT6222 Typical Applications and the output of the lower path is: +OUT = 3 • (2/3 • VICM + 1/3 • VOCM) – 2 • (VICM – VDIFF/2) = 2VICM + VOCM – 2VICM + VDIFF = VOCM + VDIFF Note that the input common mode voltage does not appear in the output as either a common mode or a difference mode term. However the voltage VOCM does appear in the output terms, and with the same polarity, so it sets up the output DC level.
PAGE 18
LT6220/LT6221/LT6222 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. S5 Package 5-Lead Plastic TSOT-23 (ReferenceS5 LTCPackage DWG # 05-08-1635) 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 0.62 MAX 0.95 REF 2.90 BSC (NOTE 4) 1.22 REF 1.4 MIN 3.85 MAX 2.62 REF 2.80 BSC 1.50 – 1.75 (NOTE 4) PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 – 0.45 TYP 5 PLCS (NOTE 3) 0.95 BSC 0.80 – 0.90 0.20 BSC 0.
PAGE 19
LT6220/LT6221/LT6222 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. S8 Package S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) 8-Lead (Reference Plastic Small Outline (NarrowRev .150 LTC DWG # 05-08-1610 G) Inch) (Reference LTC DWG # 05-08-1610 Rev G) .189 – .197 (4.801 – 5.004) NOTE 3 .045 ±.005 .050 BSC 8 .245 MIN .160 ±.005 .010 – .020 × 45° (0.254 – 0.508) 2 3 .053 – .069 (1.346 – 1.752) 0°– 8° TYP .016 – .
PAGE 20
LT6220/LT6221/LT6222 Package Description Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings. GN Package 16-Lead Plastic SSOP (Narrow .150 Inch) GN Package (Reference LTC DWG # 05-08-1641 Rev B) 16-Lead Plastic SSOP (Narrow .150 Inch) (Reference LTC DWG # 05-08-1641 Rev B) .189 – .196* (4.801 – 4.978) .045 ±.005 16 15 14 13 12 11 10 9 .254 MIN .009 (0.229) REF .150 – .165 .229 – .244 (5.817 – 6.198) .0165 ±.0015 .150 – .157** (3.810 – 3.988) .
PAGE 21
LT6220/LT6221/LT6222 Revision History (Revision history begins at Rev B) REV DATE DESCRIPTION B 05/14 Added VOUT information to Typical Application. PAGE NUMBER 1 Updated the Order Information table. 2 622012fb 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 representation that the interconnection of its circuitswww.linear.
PAGE 22
LT6220/LT6221/LT6222 Typical Application R5 2k 5.6pF VICM + VDIFF/2 +IN VS+ R4 1k + A 1/4 LT6222 – D 1/4 LT6222 – + R1 2k VMID VICM – VDIFF/2 –IN R2 2k R6 1k + B 1/4 LT6222 –OUT R3 2k VOCM + C 1/4 LT6222 +OUT – – VS– R7 2k 5.6pF 622012 F06 VS = ±1.3V TO ±6V BW ≅ 11MHz Figure 6.