Datasheet

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LT6013/LT6014

60134fb

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

All other trademarks are the property of their respective owners.

Single/Dual 145µA,

9.5nV/√Hz, A

≥5, Rail-to-Rail

Output Precision Op Amps

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

■

Thermocouple Amplifiers

■

Precision Photodiode Amplifiers

■

Instrumentation Amplifiers

■

Battery-Powered Precision Systems

■

Low-Voltage Precision Systems

■

Micro-Power Sensor Interface

■

35µV Maximum Offset Voltage (LT6013A)

■

Low 1/f Noise: 200nV

P-P

(0.1Hz to 10Hz)

40nV

RMS

(0.1Hz to 10Hz)

■

Low White Noise: 9.5nV/√Hz (1kHz)

■

Rail-to-Rail Output Swing

■

145µA Supply Current per Amplifier

■

250pA Maximum Input Bias Current (LT6013A)

■

≥5 Stable; Up to 500pF C

LOAD

■

0.2V/µs Slew Rate

■

1.4MHz Gain Bandwidth Product

■

120dB Minimum Voltage Gain, V

= ±15V

■

0.8µV/°C Maximum V

Drift

■

2.7V to ±18V Supply Voltage Operation

■

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

■

Available in SO-8 and Space Saving 3mm × 3mm

DFN Packages

The LT

6013 and LT6014 op amps combine low noise and

high precision input performance with low power con-

sumption and rail-to-rail output swing. The amplifiers are

stable in a gain of 5 or more and feature greatly improved

CMRR and PSRR versus frequency compared to other

precision op amps.

Input offset voltage is factory-trimmed to less than 35µV.

The low drift and excellent long-term stability ensure a

high accuracy over temperature and time. The 250pA

maximum input bias current and 120dB minimum voltage

gain further maintain this precision over operating

conditions.

The LT6013 and LT6014 operate from any supply voltage

from 2.7V to 36V and draw only 145µA of supply current

per amplifier on a 5V supply. The output swings to within

40mV of either supply rail, making the amplifiers very

useful for low voltage single supply operation.

The amplifiers are fully specified at 5V and ±15V supplies

and from –40°C to 85°C. The single LT6013 and dual

LT6014 are both available in SO-8 and space saving

3mm × 3mm DFN packages. For unity gain stable ver-

sions, refer to the LT6010 and LT6011 data sheets.

Gain of 10 Single Ended to Differential Converter

–

1/2 LT6014

–

8.06k2k

5 • V

60134 TA01a

–

1/2 LT6014

10k

–5 • V

LT6013/LT6014 0.1Hz to 10Hz Voltage Noise

TIME (SEC)

INPUT VOLTAGE NOISE (0.1µV/DIV)

60134 TA01b

246 107135 9

= 5V, 0V

= 25°C

EQUIVALENT RMS VOLTAGE = 40nV

RMS

Summary of content (16 pages)

PAGE 1
LT6013/LT6014 Single/Dual 145µA, 9.5nV/√Hz, AV ≥5, Rail-to-Rail Output Precision Op Amps U FEATURES DESCRIPTIO ■ The LT®6013 and LT6014 op amps combine low noise and high precision input performance with low power consumption and rail-to-rail output swing. The amplifiers are stable in a gain of 5 or more and feature greatly improved CMRR and PSRR versus frequency compared to other precision op amps. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 35µV Maximum Offset Voltage (LT6013A) Low 1/f Noise: 200nVP-P (0.
PAGE 2
LT6013/LT6014 W W W AXI U U ABSOLUTE RATI GS (Note 1) Total Supply Voltage (V+ to V–) .............................. 40V Differential Input Voltage (Note 2) .......................... 10V Input Voltage .................................................... V+ to V– 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) ...
PAGE 3
LT6013/LT6014 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified.
PAGE 4
LT6013/LT6014 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5) SYMBOL PARAMETER CONDITIONS in Input Noise Current Density f = 1kHz MIN TYP UNITS 0.15 pA/√Hz Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz 7 1.3 pAP-P pARMS Bandwidth = 0.1Hz to 10Hz 5 0.4 pAP-P pARMS Common Mode, VCM = 1V to 3.
PAGE 5
LT6013/LT6014 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified.
PAGE 6
LT6013/LT6014 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified.
PAGE 7
LT6013/LT6014 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified.
PAGE 8
LT6013/LT6014 ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings are those beyond which the life of the device may be impaired. Note 2: The inputs are protected by back-to-back diodes and internal series resistors. If the differential input voltage exceeds 10V, the input current must be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below absolute maximum ratings.
PAGE 9
LT6013/LT6014 U W TYPICAL PERFOR A CE CHARACTERISTICS Total Input Noise vs Source Resistance en, in vs Frequency 100 1/f CORNER = 2Hz VOLTAGE NOISE VS = 5V, 0V TA = 25°C 1 10 100 FREQUENCY (Hz) 1 VS = 5V, 0V TA = 25°C f = 1kHz 1 UNBALANCED SOURCE RESISTORS 0.1 TOTAL NOISE 0.01 RESISTOR NOISE ONLY 0.001 0.
PAGE 10
LT6013/LT6014 U W TYPICAL PERFOR A CE CHARACTERISTICS Warm-Up Drift Supply Current vs Supply Voltage PER AMPLIFIER CHANGE IN OFFSET VOLTAGE (µV) 450 SUPPLY CURRENT (µA) 400 350 TA = 85°C 300 TA = 25°C 250 200 150 TA = –40°C 100 THD + Noise vs Frequency 10 3 VS = 5V, 0V VOUT = 2VP-P TA = 25°C AV = 5 1 ±15V THD + NOISE (%) 500 2 ±2.5V 1 0.1 0.01 0.
PAGE 11
LT6013/LT6014 U W TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance vs Frequency 1000 VS = 5V, 0V TA = 25°C 60 VS = 5V, 0V TA = 25°C RL = 10k 120 100 40 AV = 100 1 AV = 10 OPEN-LOOP GAIN (dB) OPEN-LOOP GAIN (dB) 100 10 80 60 40 20 AV = 5 0.01 1 10 100 1k FREQUENCY (Hz) 10k 100k –160 GAIN 10 0 –30 –40 0.01 0.
PAGE 12
LT6013/LT6014 U W U U APPLICATIO S I FOR ATIO Not Unity-Gain Stable 3. Find the differential voltage that would appear across the two inputs of the op amp. The LT6013 and LT6014 amplifiers are optimized for the lowest possible noise and smallest package size, and are intentionally decompensated to be stable in a gain configuration of 5 or greater. Do not connect the amplifiers in a gain less than 5 (such as unity-gain).
PAGE 13
LT6013/LT6014 U W U U APPLICATIO S I FOR ATIO Preserving Input Precision Preserving the input accuracy of the LT6013 and LT6014 requires that the applications circuit and PC board layout do not introduce errors comparable to or greater than the 10µV typical offset of the amplifiers.
PAGE 14
LT6013/LT6014 W W SI PLIFIED SCHE ATIC (One Amplifier) V+ R3 R4 R6 R5 Q7 Q18 Q6 Q8 RC1 Q5 Q4 Q3 D1 D2 +IN Q1 Q2 OUT D4 Q12 D5 Q14 Q17 C B A –IN C3 Q20 Q11 Q15 V– D3 Q22 Q16 R1 500Ω R2 500Ω Q13 C2 Q21 B A Q19 C1 Q9 Q10 60134 SS 60134fb 14
PAGE 15
LT6013/LT6014 U PACKAGE DESCRIPTIO DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) R = 0.115 TYP 5 0.38 ± 0.10 8 0.675 ±0.05 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 3.00 ±0.10 (4 SIDES) 1.65 ± 0.10 (2 SIDES) PIN 1 TOP MARK (NOTE 6) PACKAGE OUTLINE (DD8) DFN 1203 0.75 ±0.05 0.200 REF 0.25 ± 0.05 4 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) 1 0.50 BSC 0.00 – 0.05 2.38 ±0.10 (2 SIDES) BOTTOM VIEW—EXPOSED PAD RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1.
PAGE 16
LT6013/LT6014 U TYPICAL APPLICATIO Low Power Hall Sensor Amplifier VS HALL ELEMENT ASAHI-KASEI HW-108A (RANK D) www.asahi-kasei.co.jp 1µF VS 4 LT1790-1.25 1, 2 3 6 400Ω ×4 + 100k 1% 2 + – 49.9k 10k OFFSET VS ADJUST 7.87k 1% 1 1/2 LT6014 2 1 8 + 499Ω 0.1µF VOUT 4 3 499Ω LT1782 49.9k – VS = 3V TO 18V IS = ~600µA VOUT = ~40mV/mT 6 26.