Datasheet

ManualsBrandsANALOG DEVICES ManualsLinear ICsLinear IC - Op-amp Multi-purpose MSOP 8

16 V, 1 MHz, CMOS Rail-to-Rail

Input/Output Operational Amplifier

ADA4665-2

Rev. 0

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ADA4665-2

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(Not to Scale)

FEATURES

Lower power at high voltage: 290 μA per amplifier typical

Low input bias current: 1 pA maximum

Wide bandwidth: 1.2 MHz typical

Slew rate: 1 V/μs typical

Offset voltage drift: 3 μV/°C typical

Single-supply operation: 5 V to 16 V

Dual-supply operation: ±2.5 V to ±8 V

Unity gain stable

APPLICATIONS

Portable systems

High density power budget systems

Medical equipment

Physiological measurement

Precision references

Multipole filters

Sensors

Transimpedance amplifiers

Buffer/level shifting

PIN CONFIGURATIONS

OUT A

–IN A

+IN A

V–

V+

OUT B

–IN B

+IN B

07650-001

ADA4665-2

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead SOIC

OUT A

–IN A

+IN A

V–

V+

OUT B

–IN B

07650-002

+IN B

Figure 2. 8-Lead MSOP

GENERAL DESCRIPTION

The ADA4665-2 is a rail-to-rail input/output dual amplifier

optimized for lower power budget designs. The ADA4665-2

offers a low supply current of 400 μA maximum per amplifier

at 25°C and 600 μA maximum per amplifier over the extended

industrial temperature range. This feature makes the ADA4665-2

well suited for low power applications. In addition, the ADA4665-2

has a very low bias current of 1 pA maximum, low offset voltage

drift of 3 μV/°C, and bandwidth of 1.2 MHz. The combination of

these features, together with a wide supply voltage range from

5 V to 16 V, allows the device to be used in a wide variety of

other applications, including process control, instrumentation

equipment, buffering, and sensor front ends. Furthermore, its

rail-to-rail input and output swing adds to its versatility. The

ADA4665-2 is specified from −40°C to +125°C and is available

in standard SOIC and MSOP packages.

Table 1. Low Cost Rail-to-Rail Input/Output Op Amps

Supply 5 V 16 V

Single AD8541

Dual AD8542 ADA4665-2

Quad AD8544

Table 2. Other Rail-to-Rail Input/Output Op Amps

Supply 5 V 16 V 36 V

Single AD8603 AD8663

Dual AD8607 AD8667 ADA4091-2

Quad AD8609 AD8669

Summary of content (20 pages)

PAGE 1
6 V, 1 MHz, CMOS Rail-to-Rail Input/Output Operational Amplifier ADA4665-2 PIN CONFIGURATIONS Lower power at high voltage: 290 μA per amplifier typical Low input bias current: 1 pA maximum Wide bandwidth: 1.2 MHz typical Slew rate: 1 V/μs typical Offset voltage drift: 3 μV/°C typical Single-supply operation: 5 V to 16 V Dual-supply operation: ±2.
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ADA4665-2 TABLE OF CONTENTS Features .............................................................................................. 1 Thermal Resistance .......................................................................5 Applications ....................................................................................... 1 ESD Caution...................................................................................5 Pin Configurations ................................................................
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ADA4665-2 SPECIFICATIONS ELECTRICAL CHARACTERISTICS—16 V OPERATION VSY = 16 V, VCM = VSY/2, TA = 25°C, unless otherwise noted. Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Test Conditions/Comments VOS Offset Voltage Drift Input Bias Current ∆VOS/∆T IB VCM = 16 V VCM = 0 V to 16 V −40°C ≤ TA ≤ +125°C −40°C ≤ TA ≤ +125°C Min Typ Max Unit 1 1 4 6 9 mV mV mV μV/°C pA pA pA pA V dB dB dB dB GΩ pF pF 3 0.
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ADA4665-2 ELECTRICAL CHARACTERISTICS—5 V OPERATION VSY = 5 V, VCM = VSY/2, TA = 25°C, unless otherwise noted. Table 4. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Test Conditions/Comments VOS Offset Voltage Drift Input Bias Current ∆VOS/∆T IB VCM = 5 V VCM = 0 V to 5 V −40°C ≤ TA ≤ +125°C −40°C ≤ TA ≤ +125°C Min Typ Max Unit 1 1 4 6 9 mV mV mV μV/°C pA pA pA pA V dB dB dB dB GΩ pF pF 3 0.
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ADA4665-2 ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 5. Parameter Supply Voltage Input Voltage1 Input Current Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) 1 Rating 16.5 V GND − 0.3 V to VSY + 0.
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ADA4665-2 TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. 70 70 VSY = 5V VCM = VSY/2 VSY = 16V VCM = VSY/2 60 NUMBER OF AMPLIFIERS 50 40 30 20 40 30 20 10 –5 –4 –3 –2 –1 0 1 VOS (mV) 2 3 4 5 6 0 –6 07650-006 0 –6 –5 Figure 3. Input Offset Voltage Distribution –1 0 1 VOS (mV) 2 3 4 5 6 VSY = 16V –40°C ≤ TA ≤ +125°C 9 8 7 6 5 4 3 7 6 5 4 3 2 2 1 1 0 1 2 3 4 5 6 TCVOS (µV/°C) 7 8 9 10 0 0 Figure 4.
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ADA4665-2 TA = 25°C, unless otherwise noted. 1k 100 1k VSY = 5V IB+ IB– 100 1 1 0.1 0.1 0.01 0.01 50 75 TEMPERATURE (°C) 100 125 0.001 25 50 Figure 9. Input Bias Current vs. Temperature 1k 75 TEMPERATURE (°C) 1k 100 VSY = 16V 100 125°C 10 105°C 125°C IB (pA) 85°C 0.1 1 85°C 0.1 25°C 0.01 0.01 0.001 0.001 1 2 3 4 5 VCM (V) 0.0001 07650-013 0 0 2 4 6 8 VCM (V) 10 12 14 16 Figure 13. Input Bias Current vs.
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ADA4665-2 1k 100 10 –40°C +25°C +85°C +125°C 1 0.1 0.001 0.01 0.1 1 LOAD CURRENT (mA) 10 10k 100 1k 100 10 0.1 0.001 0.1 1 LOAD CURRENT (mA) 15.99 RL = 100kΩ 100 RL = 100kΩ 15.98 4.97 4.96 4.95 RL = 10kΩ 4.94 VSY = 5V 4.93 15.97 15.96 15.95 15.94 15.93 15.91 0 25 50 TEMPERATURE (°C) 75 100 125 15.90 –50 07650-019 –25 RL = 10kΩ 15.92 Figure 16. Output Voltage (VOH) vs.
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ADA4665-2 TA = 25°C, unless otherwise noted. 135 45 20 GAIN 0 0 OPEN-LOOP GAIN (dB) 90 PHASE (Degrees) PHASE –40 1k 10k 100k FREQUENCY (Hz) –90 10M 1M PHASE 40 20 45 GAIN 0 –40 1k 40 30 CLOSED-LOOP GAIN (dB) AV = 10 20 10 0 AV = 1 –10 –20 0 100M AV = 1 –20 –40 10M AV = 10 –10 –40 10k 100k 1M FREQUENCY (Hz) –50 100 Figure 22. Closed-Loop Gain vs.
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ADA4665-2 TA = 25°C, unless otherwise noted. 100 100 VSY = 16V 90 80 80 70 70 60 60 50 50 40 100 1k 10k FREQUENCY (Hz) 100k 1M 40 100 Figure 27. CMRR vs. Frequency 1k 10k FREQUENCY (Hz) 100k Figure 30. CMRR vs. Frequency 120 120 VSY = 16V 100 100 80 80 PSRR (dB) 60 40 40 20 PSRR+ PSRR– –20 100 1k PSRR+ PSRR– 0 10k 100k FREQUENCY (Hz) 1M 10M –20 100 07650-031 0 Figure 28. PSRR vs.
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ADA4665-2 TA = 25°C, unless otherwise noted. VSY = 5V RL = 2kΩ CL = 10pF TIME (100µs/DIV) 07650-033 07650-036 VOLTAGE (5V/DIV) VOLTAGE (1V/DIV) VSY = 16V RL = 2kΩ CL = 10pF TIME (100µs/DIV) Figure 33. Large Signal Transient Response Figure 36. Large Signal Transient Response VSY = 5V RL = 2kΩ CL = 10pF TIME (100µs/DIV) TIME (100µs/DIV) VSY = ±2.5V 0 INPUT –50 –100 2 1 OUTPUT 0 –1 VSY = ±8V 0 INPUT –50 –100 10 5 OUTPUT 0 07650-038 3 50 Figure 35.
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ADA4665-2 INPUT VOLTAGE (mV) 150 VSY = ±2.5V 100 50 INPUT 0 150 VSY = ±8V 100 50 INPUT 0 –3 TIME (20µs/DIV) –5 –10 TIME (20µs/DIV) Figure 39. Negative Overload Recovery Figure 42. Negative Overload Recovery VSY = 16V RL = 2kΩ CL = 50pF OUTPUT +5mV 0 –5mV INPUT OUTPUT TIME (2µs/DIV) +5mV ERROR BAND 0 –5mV TIME (2µs/DIV) Figure 40. Negative Settling Time to 0.1% Figure 43. Negative Settling Time to 0.
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ADA4665-2 TA = 25°C, unless otherwise noted. 100 100 1k 10k 100k FREQUENCY (Hz) 10 100 07650-048 10 100 1k 10k 100k FREQUENCY (Hz) Figure 45. Voltage Noise Density vs. Frequency Figure 48. Voltage Noise Density vs. Frequency VSY = 5V TIME (2s/DIV) 07650-046 07650-049 INPUT VOLTAGE NOISE (1µV/DIV) INPUT VOLTAGE NOISE (1µV/DIV) VSY = 16V TIME (2s/DIV) Figure 46. 0.1 Hz to 10 Hz Noise Figure 49. 0.
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ADA4665-2 TA = 25°C, unless otherwise noted. 0 1kΩ CHANNEL SEPARATION (dB) –20 –40 –60 –80 –100 –120 VIN = 1V p-p VIN = 4V p-p 1k 10k –40 –60 –80 –100 –120 100k VIN = 1V p-p VIN = 5V p-p VIN = 15V p-p –160 100 1k 10k Figure 53. Channel Separation vs. Frequency 1 VSY = 5V RL = 10kΩ AV = 1 THD + NOISE (%) 0.1 0.01 VSY = 16V RL = 10kΩ AV = 1 0.1 0.01 VIN = 1V p-p VIN = 5V p-p VIN = 15V p-p VIN = 1V p-p VIN = 4V p-p 100 1k FREQUENCY (Hz) 10k 100k 0.001 10 07650-054 0.
PAGE 15
ADA4665-2 APPLICATIONS INFORMATION I RAIL-TO-RAIL INPUT OPERATION 16V SUPPLY The ADA4665-2 is a unity-gain stable CMOS operational amplifier designed with rail-to-rail input/output swing capability to optimize performance. The rail-to-rail input feature is vital to maintain the wide dynamic input voltage range and to maximize signal swing to both supply rails. For example, the rail-to-rail input feature is extremely useful in buffer applications where the input voltage must cover both the supply rails.
PAGE 16
ADA4665-2 C1 1nF VIN Figure 59 shows a two-pole high-pass filter, with cutoff frequency at 10 kHz and quality factor, Q, of 1/√2. +VSY R2 22.5kΩ C1 0.5nF R1 22.5kΩ VIN 1/2 VOUT ADA4665-2 –VSY C2 0.5nF 07650-057 C2 0.5nF R2 45kΩ Figure 57. Two-Pole Low-Pass Filter fc = 1/2 VOUT ADA4665-2 –VSY When R1 = R2 and C1 = 2C2, the values of Q and the cutoff frequency are calculated as follows: Q= +VSY 07650-059 R1 22.5kΩ Figure 59.
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ADA4665-2 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 5 1 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) COPLANARITY 0.10 SEATING PLANE 0.50 (0.0196) 0.25 (0.0099) 45° 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.
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ADA4665-2 NOTES Rev.
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ADA4665-2 NOTES Rev.