Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsLinear ICsLinear IC - Op-amp Multi-purpose DFN 8 (3x3)

LT1803/LT1804/LT1805

180345f

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

Single/Dual/Quad 100V/µs,

85MHz, Rail-to-Rail Input and

Output Op Amps

■

Slew Rate: 100V/µs

■

Gain Bandwidth Product: 85MHz

■

Input Common Mode Range Includes Both Rails

■

Output Swings Rail-to-Rail

■

Low Quiescent Current: 3mA Max per Amplifier

■

Large Output Current: 42mA

■

Voltage Noise: 21nV/√Hz

■

Power Supply Rejection: 90dB

■

Open-Loop Gain: 60V/mV

■

Operating Temperature Range: –40°C to 85°C

■

Single Available in the 8-Pin SO and 5-Pin Low Profile

(1mm) SOT-23 (ThinSOT

) Package

■

Dual Available in 8-Lead DFN and SO Packages

■

Quad Available in the 14-Pin Narrow SO Package

■

Low Voltage, High Frequency Signal Processing

■

Driving A/D Converters

■

Rail-to-Rail Buffer Amplifiers

■

Active Filters

■

Video Line Driver

The LT

1803/LT1804/LT1805 are single/dual/quad, low

power, high speed rail-to-rail input and output operational

amplifiers with excellent DC performance. The LT1803/

LT1804/LT1805 feature reduced supply current, lower

input offset voltage, lower input bias current and higher

DC gain than other devices with comparable bandwidth

and slew rate.

Typically, the LT1803/LT1804/LT1805 have an input off-

set voltage of 350µV, an input bias current of 125nA and

an open-loop gain of 60V/mV.

The LT1803/LT1804/LT1805 have an input range that

includes both supply rails and an output that swings within

20mV of either supply rail to maximize the signal dynamic

range in low supply applications.

The LT1803/LT1804/LT1805 are specified at 3V, 5V and

±5V supplies and typically maintain their performance for

supplies from 2.3V to 12.6V. The inputs can be driven

beyond the supplies without damage or phase reversal of

the output.

The LT1803 is available in the 8-pin SO package with the

standard op amp pinout and in the 5-pin SOT-23 package.

The LT1804 is available in 8-pin DFN and SO packages

with the standard op amp pinouts. The LT1805 features

the standard quad op amp configuration and is available in

a 14-pin plastic SO package.

, LTC and LT are registered trademarks of Linear Technology Corporation.

–

1/2 LT1804

10k

100k

1N4148

= ±5V

18045 TA01

1N4148

–

OUT

0.1µF

Inverting DC Restore

50µs/DIV 18045 TA02

50mV/DIV

GND

OUT

500mV/DIV

GND

Inverting DC Restore Circuit Response

ThinSOT is a trademark of Linear Technology Corporation.

Summary of content (20 pages)

PAGE 1
LT1803/LT1804/LT1805 Single/Dual/Quad 100V/µs, 85MHz, Rail-to-Rail Input and Output Op Amps DESCRIPTIO U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Slew Rate: 100V/µs Gain Bandwidth Product: 85MHz Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Low Quiescent Current: 3mA Max per Amplifier Large Output Current: 42mA Voltage Noise: 21nV/√Hz Power Supply Rejection: 90dB Open-Loop Gain: 60V/mV Operating Temperature Range: – 40°C to 85°C Single Available in the 8-Pin SO and 5-Pin Low Profile (
PAGE 2
LT1803/LT1804/LT1805 W W U W ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V+ to V–) ........................... 12.6V 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 ......................... 150°C Maximum Junction Temperature (DD Package) ..
PAGE 3
LT1803/LT1804/LT1805 ELECTRICAL CHARACTERISTICS TA = 25°C; VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted SYMBOL PARAMETER CONDITIONS TYP MAX VOS Input Offset Voltage VCM = 0V VCM = 0V (DD Package) VCM = 0V (SOT-23 Package) VCM = VS 0.35 1.00 1.00 1.50 2 3 5 8 mV mV mV mV ∆VOS Input Offset Shift VCM = 0V to VS – 2V 0.125 0.50 mV Input Offset Voltage Match (Channel-to-Channel) (Note 9) VCM = 0V VCM = 0V (DD Package) 0.5 1.0 3.5 5.
PAGE 4
LT1803/LT1804/LT1805 ELECTRICAL CHARACTERISTICS The ● denotes 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 CONDITIONS TYP MAX UNITS VOS Input Offset Voltage VCM = 0V VCM = 0V (DD Package) VCM = 0V (SOT-23 Package) VCM = VS ● ● ● ● MIN 0.50 1.25 1.25 1.60 3.5 5 6 8.5 mV mV mV mV ∆VOS Input Offset Shift VCM = 0V to VS – 2V ● 0.05 0.
PAGE 5
LT1803/LT1804/LT1805 ELECTRICAL CHARACTERISTICS The ● denotes 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) SYMBOL PARAMETER CONDITIONS TYP MAX UNITS VOS Input Offset Voltage VCM = 0V VCM = 0V (DD Package) VCM = 0V (SOT-23 Package) VCM = VS ● ● ● ● MIN 0.7 1.5 1.5 1.7 4 6.5 7 9 mV mV mV mV ∆VOS Input Offset Shift VCM = 0V to VS – 2V ● 0.125 1.
PAGE 6
LT1803/LT1804/LT1805 ELECTRICAL CHARACTERISTICS TA = 25°C, VS = ±5V, VCM = 0V, VOUT = 0V, unless otherwise noted SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage VCM = –5V VCM = –5V (DD Package) VCM = –5V (SOT-23 Package) VCM = 5V ∆VOS Input Offset Shift VCM = –5V to 3V 0.3 1 mV Input Offset Voltage Match (Channel-to-Channel) (Note 9) VCM = –5V VCM = –5V (DD Package) 0.5 1 4 5.5 mV mV Input Bias Current VCM = –4V VCM = 5V 125 2.5 750 5.
PAGE 7
LT1803/LT1804/LT1805 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. 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 (SOT-23 Package) VCM = 5V ● ● ● ● MIN 0.5 1.5 1.5 1.4 3.5 5 7 8.5 mV mV mV mV ∆VOS Input Offset Shift VCM = –5V to 3V ● 0.35 1.
PAGE 8
LT1803/LT1804/LT1805 ELECTRICAL CHARACTERISTICS The ● denotes 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 TYP MAX UNITS VOS Input Offset Voltage VCM = –5V VCM = –5V (DD Package) VCM = –5V (SOT-23 Package) VCM = 5V ● ● ● ● MIN 1 2 2 2 4.0 6.5 8 9 mV mV mV mV ∆VOS Input Offset Shift VCM = –5V to 3V ● 0.4 1.
PAGE 9
LT1803/LT1804/LT1805 U W TYPICAL PERFOR A CE CHARACTERISTICS VOS Distribution, VCM = 0V (SO-8, PNP Stage) 20 15 10 20 15 10 5 5 0 –1250 0 750 –250 0 250 –750 INPUT OFFSET VOLTAGE (µV) 1250 4 –2 0 2 –4 INPUT OFFSET VOLTAGE (mV) –6 25 20 15 10 0 –5 – 4 6 5.0 VS = 5V, 0V VCM = 5V 2000 PER AMPLIFIER VS = 5V, 0V TYPICAL PART 1500 SUPPLY CURRENT (mA) 4.0 10 5 5 Offset Voltage vs Input Common Mode Voltage 4.
PAGE 10
LT1803/LT1804/LT1805 U W TYPICAL PERFOR A CE CHARACTERISTICS Output Saturation Voltage vs Load Current (Output High) 6 1 TA = 125°C TA = 25°C 0.1 TA = –55°C 0.01 0.001 0.01 4 TA = 125°C 2 TA = 25°C 0 TA = –55°C –2 –4 –6 100 0.1 1 10 LOAD CURRENT (mA) 0 0 SOURCING RL = 1k 0 –0.5 –1.0 –40 8 1.0 RL = 100Ω 0.5 RL = 1k 0 –0.5 –1.
PAGE 11
LT1803/LT1804/LT1805 U W TYPICAL PERFOR A CE CHARACTERISTICS Input Current Noise vs Frequency 6 5 PNP ACTIVE VCM = 2.5V 3 NPN ACTIVE VCM = 4.25V 2 VS = 5V, 0V 4 2 0 0.01 0.1 –6 100 10 1 FREQUENCY (kHz) 1 3 2 4 5 6 7 TIME (SECONDS) VS = ±5V 90 40 PHASE MARGIN VS = ±5V PHASE MARGIN (DEG) VS = ±2.5V –25 0 25 50 75 TEMPERATURE (°C) VS = ±2.5V 70 24 18 12 12 6 6 –6 –12 VS = ±2.5V VS = ±5V 100 125 120 40 140 GAIN 20 160 TA = 25°C CL = 5pF RL = 1k VS = ±5V VS = ±2.5V –40 0.
PAGE 12
LT1803/LT1804/LT1805 U W TYPICAL PERFOR A CE CHARACTERISTICS 80 60 40 20 0 0.01 0.1 1 10 FREQUENCY (MHz) 100 80 60 40 NEGATIVE SUPPLY 50 40 30 100 0 5 0 0.1 1 FREQUENCY (MHz) 10 100 15 100 1000 CAPACITIVE LOAD (pF) 10000 VS = 5V, 0V AV = 2 – 40 V OUT = 2VP-P – 60 RL = 150Ω, 2ND – 70 – 80 RL = 150Ω, 3RD RL = 1kΩ, 2ND –110 0.01 RL = 1kΩ, 3RD 0.1 1 FREQUENCY (MHz) 180345 G31 10 – 50 RL = 150Ω, 3RD – 60 – 70 RL = 150Ω, 2ND – 80 RL = 1kΩ, 3RD RL = 1kΩ, 2ND – 90 –100 0.01 0.
PAGE 13
LT1803/LT1804/LT1805 U W TYPICAL PERFOR A CE CHARACTERISTICS ±5V Large-Signal Response ±5V Small-Signal Response 0V Output Overdrive Recovery 50mV/DIV VIN 1V/DIV 0V 0V 2V/DIV VOUT 2V/DIV 180345 G37 W 200ns/DIV VS = ±5V AV = 1 RL = 1k 50ns/DIV 180345 G38 VS = 5V, 0V AV = 2 RL = 1k 100ns/DIV 180345 G39 U VS = ±5V AV = 1 RL = 1k U U APPLICATIO S I FOR ATIO Circuit Description Power Dissipation The LT1803/LT1804/LT1805 have input and output signal ranges from the negative power supply t
PAGE 14
LT1803/LT1804/LT1805 U W U U APPLICATIO S I FOR ATIO V+ R3 V+ + R5 V– ESDD1 I2 R4 + D1 ESDD2 Q12 Q11 I1 Q13 +IN D6 D5 D8 D2 Q5 OUT D3 BUFFER AND OUTPUT BIAS Q10 V+ D4 Q9 Q16 Q17 V– Q1 Q2 ESDD3 V– I3 CC Q4 Q3 ESDD4 + VBIAS D7 –IN Q15 C2 Q8 C1 Q18 Q19 Q7 Q14 Q6 R1 V– R2 180345 F01 Figure 1. LT1803/LT1804/LT1805 Simplified Schematic Diagram If both amplifiers are loaded simultaneously, then the total power dissipation is 0.19W.
PAGE 15
LT1803/LT1804/LT1805 U W U U APPLICATIO S I FOR ATIO 12.6V, the absolute maximum rating, no damage will occur to the device. Overdrive Protection When the input voltage exceeds the power supplies, two pairs of crossing diodes D1 through D4 will prevent the output from reversing polarity. If the input voltage exceeds either power supply by 700mV, diode D1/D2 or D3/D4 will turn on to keep the output at the proper polarity.
PAGE 16
LT1803/LT1804/LT1805 U PACKAGE DESCRIPTIO S5 Package 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 0.01 – 0.10 1.00 MAX DATUM ‘A’ 0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3.
PAGE 17
LT1803/LT1804/LT1805 U PACKAGE DESCRIPTIO DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) 0.675 ±0.05 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) PACKAGE OUTLINE 0.28 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS R = 0.115 TYP 5 3.00 ±0.10 (4 SIDES) 0.38 ± 0.10 8 1.65 ± 0.10 (2 SIDES) PIN 1 TOP MARK (DD8) DFN 0203 0.200 REF 0.75 ±0.05 0.00 – 0.05 4 0.28 ± 0.05 1 0.50 BSC 2.38 ±0.10 (2 SIDES) BOTTOM VIEW—EXPOSED PAD NOTE: 1.
PAGE 18
LT1803/LT1804/LT1805 U PACKAGE DESCRIPTIO S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 – .197 (4.801 – 5.004) NOTE 3 .045 ±.005 .050 BSC 8 .245 MIN 7 6 5 .160 ±.005 .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) .030 ±.005 TYP 1 RECOMMENDED SOLDER PAD LAYOUT .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 0°– 8° TYP .016 – .050 (0.406 – 1.270) NOTE: 1. DIMENSIONS IN .053 – .069 (1.346 – 1.752) .014 – .
PAGE 19
LT1803/LT1804/LT1805 U PACKAGE DESCRIPTIO S Package 14-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .337 – .344 (8.560 – 8.738) NOTE 3 .045 ±.005 .050 BSC 14 N 12 11 10 9 8 N .245 MIN .160 ±.005 .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) 1 .030 ±.005 TYP 13 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 2 3 4 5 6 .053 – .069 (1.346 – 1.752) .004 – .010 (0.101 – 0.
PAGE 20
LT1803/LT1804/LT1805 U TYPICAL APPLICATIO 500mA Pulse Response of LED Array Driver LED Array Driver 10V 3.01k 3 VIN + 5V 7 6 332Ω 10Ω LT1803 2 – 4 INTERNATIONAL RECTIFIER IRLL3303 IOUT PIN 3 0V 27pF VSENSE ••• 332Ω 0V 2 FOOT WIRE VSENSE IOUT = VIN • 1A RSENSE 0.