Datasheet

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

30 V, Micropower, Overvoltage Protection,

Rail-to-Rail Input/Output Amplifier

Data Sheet

ADA4096-2

Rev. A

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FEATURES

Input overvoltage protection, 32 V above and below

the supply rails

Rail-to-rail input and output swing

Low power: 60 μA per amplifier typical

Unity-gain bandwidth

800 kHz typical @ V

= ±15 V

550 kHz typical @ V

= ±5 V

465 kHz typical @ V

= ±1.5 V

Single-supply operation: 3 V to 30 V

Low offset voltage: 300 μV maximum

High open-loop gain: 120 dB typical

Unity-gain stable

No phase reversal

Qualified for automotive applications

APPLICATIONS

Battery monitoring

Sensor conditioners

Portable power supply control

Portable instrumentation

PIN CONFIGURATIONS

OUTA

–INA

+INA

–V

OUTB

–INB

+INB

ADA4096-2

TOP VIEW

(Not to Scale)

09241-001

Figure 1. 8-Lead, MSOP (RM-8)

OUTB

–INB

+INB

ADA4096-2

TOP VIEW

(Not to Scale)

3+INA

4–V

1OUTA

2–INA

NOTES

1. CONNECT THE EXPOSED

PAD TO GROUND.

09241-002

Figure 2. 8-Lead LFCSP (CP-8-10)

GENERAL DESCRIPTION

The ADA4096-2 operational amplifier features micropower

operation and rail-to-rail input and output ranges. The

extremely low power requirements and guaranteed operation

from 3 V to 30 V make these amplifiers perfectly suited to

monitor battery usage and to control battery charging. Their

dynamic performance, including 27 nV/√Hz voltage noise

density, recommends them for battery-powered audio applica-

tions. Capacitive loads to 200 pF are handled without oscillation.

The ADA4096-2 has overvoltage protection inputs and diodes

that allow the voltage input to extend 32 V above and below

the supply rails, making this device ideal for robust industrial

applications.

The ADA4096-2 features a unique input stage that allows the

input voltage to exceed either supply safely without any phase

reversal or latch-up; this is called overvoltage protection, or OVP.

The dual ADA4096-2 is available in 8-lead LFCSP (2 mm × 2 mm)

and 8-lead MSOP packages. The ADA409x family is specified

over the extended industrial temperature range (−40°C to +125°C)

and is part of the growing selection of 30 V, low power op amps

from Analog Devices, Inc. (see Table 1).

Table 1. Low Power, 30 V Operational Amplifiers

Op Amp Rail-to-Rail I/O PJFET Low Noise

Dual ADA4091-2 AD8682 AD8622

Quad ADA4091-4 AD8684 AD8624

Summary of content (20 pages)

PAGE 1
PIN CONFIGURATIONS Input overvoltage protection, 32 V above and below the supply rails Rail-to-rail input and output swing Low power: 60 μA per amplifier typical Unity-gain bandwidth 800 kHz typical @ VSY = ±15 V 550 kHz typical @ VSY = ±5 V 465 kHz typical @ VSY = ±1.
PAGE 2
ADA4096-2 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 ±1.5 V Characteristics ..................................................................8 Applications ....................................................................................... 1 ±5 V Characteristics................................................................... 10 Pin Configurations .........................................................
PAGE 3
Data Sheet ADA4096-2 SPECIFICATIONS ELECTRICAL SPECIFICATIONS, VSY = ±1.5 V VSY = ±1.5 V, VCM = VSY/2, TA = 25°C, unless otherwise noted. Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Symbol Test Conditions/Comments Min VOS ∆VOS/∆T IB 0°C ≤ TA ≤ +125°C −40°C ≤ TA ≤ +125°C −40°C ≤ TA ≤ +125°C Typ Max Unit 35 300 450 900 µV µV µV µV/°C nA nA nA nA V dB dB dB dB dB dB 1 ±10 −40°C ≤ TA ≤ +125°C Input Offset Current IOS ±0.
PAGE 4
ADA4096-2 Data Sheet ELECTRICAL SPECIFICATIONS, VSY = ±5 V VSY = ±5.0 V, VCM = VSY/2, TA = 25°C, unless otherwise noted. Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Test Conditions/Comments Min VOS Typ Max Unit 35 300 500 µV µV µV/°C nA nA nA nA V dB dB dB dB dB dB dB dB −40°C ≤ TA ≤ +125°C Offset Voltage Drift Input Bias Current ∆VOS/∆T IB 1 ±10 −40°C ≤ TA ≤ +125°C Input Offset Current IOS ±1.
PAGE 5
Data Sheet ADA4096-2 ELECTRICAL SPECIFICATIONS, VSY = ±15 V VSY = ±15.0 V, VCM = VSY/2, VO = 0.0 V, TA = 25°C, unless otherwise noted. Table 4. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Offset Voltage Drift Input Bias Current ∆VOS/∆T IB Test Conditions/Comments Min VOS Typ Max Unit 35 300 500 µV µV µV/°C nA nA nA nA V dB dB dB dB dB dB dB dB −40°C ≤ TA ≤ +125°C 1 ±3 −40°C ≤ TA ≤ +125°C Input Offset Current IOS ±0.
PAGE 6
ADA4096-2 Parameter NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density Data Sheet Symbol Test Conditions/Comments en p-p en in 0.1 Hz to 10 Hz f = 1 kHz f = 1 kHz Rev. A | Page 6 of 20 Min Typ 0.7 27 0.
PAGE 7
Data Sheet ADA4096-2 ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 5. Parameter Supply Voltage Input Voltage Operating Condition Overvoltage Condition1 Differential Input Voltage2 Input Current Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) 1 2 θJA is specified for the device soldered on a 4-layer JEDEC standard printed circuit board (PCB) with zero airflow.
PAGE 8
ADA4096-2 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. ±1.5 V CHARACTERISTICS 10k 180 160 140 1k VOUT TO RAIL (mV) NUMBER OF AMPLIFIERS ADA4096-2 VSY = ±1.5V TA = 25°C ADA4096-2 VSY = ±1.5V TA = 25°C 120 100 80 60 100 SOURCING SINKING 10 40 0.1 1 10 100 LOAD CURRENT (mA) Figure 3. Input Offset Voltage Distribution Figure 6. Dropout Voltage vs. Load Current 140 25 ADA4096-2 VSY = ±1.5V TA = –40°C TO +125°C 200 ADA4096-2 VSY = ±1.
PAGE 9
Data Sheet ADA4096-2 10k 0.08 ADA4096-2 VSY = ±1.5V TA = 25°C 1k ADA4096-2 VSY = ±1.5V TA = 25°C RL = 10kΩ CL = 100pF G = +1 0.06 0.04 0.02 G = +100 VOUT (V) ZOUT (Ω) 100 10 G = +10 1 0 –0.02 –0.04 –0.06 G = +1 0.1 100 1k 10k 100k 1M 10M FREQUENCY (Hz) –0.10 09241-009 0.01 10 0 10 15 20 25 30 TIME (µs) Figure 9. Output Impedance vs. Frequency Figure 12. Small Signal Transient Response 120 1.6 ADA4096-2 VSY = ±1.5V TA = 25°C 100 ADA4096-2 VSY = ±1.
PAGE 10
ADA4096-2 Data Sheet ±5 V CHARACTERISTICS 10k 250 ADA4096-2 VSY = ±5V TA = 25°C ADA4096-2 VSY = ±5V TA = 25°C 1k VOUT TO RAIL (mV) NUMBER OF AMPLIFIERS 200 150 100 100 SOURCING SINKING 10 0.01 0.1 1 10 100 LOAD CURRENT (mA) Figure 18. Dropout Voltage vs. Load Current Figure 15.
PAGE 11
Data Sheet ADA4096-2 10k 0.08 ADA4096-2 VSY = ±5V TA = 25°C 1k ADA4096-2 VSY = ±5V TA = 25°C RL = 10kΩ CL = 100pF G = +1 0.06 0.04 0.02 G = +100 VOUT (V) ZOUT (Ω) 100 10 0 –0.02 G = +10 1 –0.04 –0.06 G = +1 0.1 100 1k 10k 100k 1M 10M FREQUENCY (Hz) –0.10 09241-021 0.01 10 0 5 10 15 20 25 30 TIME (µs) Figure 21. Output Impedance vs. Frequency 09241-018 –0.08 Figure 24.
PAGE 12
ADA4096-2 Data Sheet ±15 V CHARACTERISTICS 10k 250 ADA4096-2 VSY = ±15V TA = 25°C ADA4096-2 VSY = ±15V TA = 25°C 1k VOUT TO RAIL (mV) NUMBER OF AMPLIFIERS 200 150 100 100 SOURCING SINKING 10 0.01 0.1 1 10 100 LOAD CURRENT (mA) Figure 30. Dropout Voltage vs. Load Current Figure 27.
PAGE 13
Data Sheet ADA4096-2 10k 0.08 ADA4096-2 VSY = ±15V TA = 25°C 1k ADA4096-2 VSY = ±15V TA = 25°C RL = 10kΩ CL = 100pF G = +1 0.06 0.04 0.02 10 VOUT (V) ZOUT (Ω) 100 G = +100 G = +10 1 0 –0.02 –0.04 G = +1 –0.06 0.1 100 1k 10k 100k 1M 10M FREQUENCY (Hz) –0.10 09241-035 0.01 10 0 5 10 15 20 25 30 TIME (µs) Figure 33. Output Impedance vs. Frequency 09241-032 –0.08 Figure 36.
PAGE 14
ADA4096-2 Data Sheet COMPARATIVE VOLTAGE AND VARIABLE VOLTAGE GRAPHS 0.5 70 0.3 NOISE (µV) 0.2 0.1 0 –0.1 –0.2 –0.4 –10 –8 –6 –4 –2 0 2 4 6 8 10 TIME (s) 50 40 30 20 10 0 09241-039 –0.3 ADA4096-2 TA = 25°C RL = ∞ 60 0 4 16 20 24 28 32 36 Figure 42. Supply Current vs. Supply Voltage –80 100 ADA4096-2 VSY = ±15V TA = 25°C ADA4096-2 VSY = ±15V TA = 25°C –100 en (nV/ Hz) CHANNEL SEPARATION (dB) 12 SUPPLY VOLTAGE (V) Figure 39. Input Voltage Noise, 0.
PAGE 15
Data Sheet ADA4096-2 THEORY OF OPERATION INPUT STAGE VCC R2 I1 R7 R5 I3 D6 Q5 D3 Q3 Q6 D10 Q11 D9 C2 Q4 Q18 OUT Q13 D4 Q20 Q12 Q7 Q8 C1 Q9 Q14 D8 Q10 Q17 ×1 +IN OVP –IN OVP Q1 Q19 Q2 R6 D2 I2 R3 Q15 R4 D7 Q16 D11 D1 VEE 09241-045 R1 Figure 45. Simplified Schematic Figure 45 shows a simplified schematic of the ADA4096-2. The input stage comprises two differential pairs (Q1 to Q4 and Q5 to Q8) operating in parallel.
PAGE 16
ADA4096-2 Data Sheet INPUT OVERVOLTAGE PROTECTION The ADA4096-2 inputs are protected from input voltage excursions up to 32 V outside each rail. This feature is of particular importance in applications with power supply sequencing issues that could cause the signal source to be active before the supplies to the amplifier.
PAGE 17
Data Sheet ADA4096-2 COMPARATOR OPERATION 400 VOUT = HIGH 300 VOUT = LOW 200 100 BUFFER 0 0 4 8 12 16 20 24 28 SUPPLY VOLTAGE (V) Figure 48. Comparator Supply Current Rev. A | Page 17 of 20 32 36 09241-048 Although op amps are quite different from comparators, occasionally an unused section of a dual or a quad op amp may be pressed into service as a comparator; however, this is not recommended for any rail-to-rail output op amps.
PAGE 18
ADA4096-2 Data Sheet OUTLINE DIMENSIONS 3.20 3.00 2.80 8 3.20 3.00 2.80 1 5 5.15 4.90 4.65 4 PIN 1 IDENTIFIER 0.65 BSC 0.95 0.85 0.75 15° MAX 1.10 MAX 0.40 0.25 0.80 0.55 0.40 0.23 0.09 6° 0° 10-07-2009-B 0.15 0.05 COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 49. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters 1.70 1.60 1.50 2.00 BSC SQ 0.50 BSC 8 5 1.10 1.00 0.90 EXPOSED PAD 0.425 0.350 0.275 1 4 TOP VIEW 0.60 0.55 0.
PAGE 19
Data Sheet ADA4096-2 ORDERING GUIDE Model 1, 2 ADA4096-2ARMZ ADA4096-2ARMZ-R7 ADA4096-2ARMZ-RL ADA4096-2ACPZ-R7 ADA4096-2ACPZ-RL ADA4096-2WARMZ-R7 ADA4096-2WARMZ-RL 1 2 Temperature Range −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C Package Description 8-Lead Mini Small Outline Package [MSOP] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Mini Small Outline Package [MSOP] 8-Lead Frame Chip Scale Package [LFCSP_UD] 8-Lead Frame Chip Scale