ANALOG DEVICES ADA4096-2 Service Manual

30 V, Micropower, Overvoltage Protection,

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

550 kHz typical @ V

465 kHz typical @ 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

= ±15 V

SY

= ±5 V

SY

= ±1.5 V

SY

Rail-to-Rail Input/Output Amplifier

ADA4096-2

PIN CONFIGURATIONS

OUTA

1

–INA

2

ADA4096-2

+INA

–V

NOTES

1. CONNECT THE EXPOSE D

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

TOP VIEW

3

(Not to Scale)

4

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

1OUTA

ADA4096-2

2–INA

TOP VIEW

(Not to Scale)

3+INA

4–V

PAD TO GROUND.

8

7

6

5

8

7

6

5

+V

OUTB

–INB

+INB

+V

OUTB

–INB

+INB

09241-001

09241-002

GENERAL DESCRIPTION

The ADA4096 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 applications. 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

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.

ADA4096-2

REVISION HISTORY

7/11—Revision 0: Initial Version

±5 V Characteristics................................................................... 10

±15 V Characteristics ................................................................ 12

Comparative Voltage and Variable Voltage Graphs............... 14

Theory of Operation ......................................................................15

Input Stage................................................................................... 15

Phase Inversion........................................................................... 15

Input Overvoltage Protection................................................... 16

Comparator Operation.............................................................. 17

Outline Dimensions....................................................................... 18

Ordering Guide .......................................................................... 19

Automotive Products................................................................. 19

Rev. 0 | Page 2 of 20

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 Symbol Test Conditions/Comments Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 35 300 μV

0°C ≤ TA ≤ +125°C 450 μV

−40°C ≤ TA ≤ +125°C 900 μV

Offset Voltage Drift ∆VOS/∆T −40°C ≤ TA ≤ +125°C 1 μV/°C

Input Bias Current IB ±10 ±15 nA

−40°C ≤ TA ≤ +125°C ±16 nA

Input Offset Current IOS ±0.1 ±1.5 nA

−40°C ≤ TA ≤ +125°C ±3 nA

Input Voltage Range −1.5 +1.5 V

Common-Mode Rejection Ratio CMRR VCM = 0 V to ±1.5 V 63 77 dB

−40°C ≤ TA ≤ +125°C 58 dB

Large Signal Voltage Gain AVO RL = 10 kΩ, VO = −1.4 V to +1.4 V 92 94 dB

−40°C ≤ TA ≤ +125°C 84 dB R

−40°C ≤ TA ≤ +125°C 77 dB

MATCHING CHARACTERISTICS

Offset Voltage TA = 25°C 100 300 μV

OUTPUT CHARACTERISTICS

Output Voltage High VOH RL = 10 kΩ to GND 1.48 1.49 V

−40°C ≤ TA ≤ +125°C 1.45 V R

−40°C to +125°C 1.40 V

Output Voltage Low VOL RL = 10 kΩ to GND −1.49 −1.48 V

−40°C ≤ TA ≤ +125°C −1.45 V R

−40°C ≤ TA ≤ +125°C −1.40 V Short-Circuit Limit ISC Source/sink ±10 mA Closed-Loop Impedance Z

POWER SUPPLY

Power Supply Rejection Ratio PSRR VSY = 3 V to 36 V 100 dB

−40°C ≤ TA ≤ +125°C 90 dB Supply Current per Amplifier ISY VO = VSY/2 40 μA

−40°C ≤ TA ≤ +125°C 80 μA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 100 kΩ, CL = 30 pF 0.25 V/μs Gain Bandwidth Product GBP VIN = 5 mV p-p, RL = 10 kΩ, AV = 100 501 kHz Unity-Gain Crossover UGC VIN = 5 mV p-p, RL = 10 kΩ, AV = 1 465 kHz Phase Margin ΦM 51 Degrees

−3 dB Closed-Loop Bandwidth −3 dB AV = 1, VIN = 5 mV p-p 97 kHz

NOISE PERFORMANCE

Voltage Noise en p-p 0.1 Hz to 10 Hz 0.7 μV p-p Voltage Noise Density en f = 1 kHz 27 nV/√Hz Current Noise Density in f = 1 kHz 0.2 pA/√Hz

f = 100 kHz, AV = 1 102 Ω

OUT

= 2 kΩ, VO = −1.3 V to +1.3 V 86 92 dB

L

= 2 kΩ to GND 1.45 1.46 V

L

= 2 kΩ to GND −1.48 −1.47 V

L

Rev. 0 | Page 3 of 20

ADA4096-2

ELECTRICAL SPECIFICATIONS, VSY = ±5 V

VSY = ±5.0 V, VCM = VSY/2, TA = 25°C, unless otherwise noted.

Table 3.

Parameter Symbol Test Conditions/Comments Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 35 300 μV

−40°C ≤ TA ≤ +125°C 500 μV Offset Voltage Drift ∆VOS/∆T 1 μV/°C Input Bias Current IB ±10 ±15 nA

−40°C ≤ TA ≤ +125°C ±19 nA Input Offset Current IOS ±1.5 ±2 nA

−40°C ≤ TA ≤ +125°C ±3 nA Input Voltage Range −5 +5 V Common-Mode Rejection Ratio CMRR VCM = −5 V to +5 V 73 86 dB

−40°C ≤ TA ≤ +125°C 68 dB V

−40°C ≤ TA ≤ +125°C 85 dB Large Signal Voltage Gain AVO RL = 10 kΩ, VO = ±4.8 V 102 111 dB

−40°C ≤ TA ≤ +125°C 99 dB R

−40°C ≤ TA ≤ +125°C 88 dB

MATCHING CHARACTERISTICS

Offset Voltage TA = 25°C 100 300 μV

OUTPUT CHARACTERISTICS

Output Voltage High VOH RL = 10 kΩ to GND 4.96 4.97 V

−40°C ≤ TA ≤ +125°C 4.95 V R

−40°C ≤ TA ≤ +125°C 4.70 V Output Voltage Low VOL RL = 10 kΩ to GND −4.98 −4.97 V

−40°C ≤ TA ≤ +125°C −4.95 V R

−40°C ≤ TA ≤ +125°C −4.75 V Short-Circuit Limit ISC Source/sink ±10 mA Closed-Loop Impedance Z

f = 100 kHz, AV = 1 71 Ω

OUT

POWER SUPPLY

Power Supply Rejection Ratio PSRR VSY = 3 V to 36 V 100 dB

−40°C ≤ TA ≤ +125°C 90 dB Supply Current per Amplifier ISY VO = VSY/2 47 55 μA

−40°C ≤ TA ≤ +125°C 75 μA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 100 kΩ, CL = 30 pF 0.3 V/μs Gain Bandwidth Product GBP VIN = 5 mV p-p, RL = 10 kΩ, AV = 100 595 kHz Unity-Gain Crossover UGC VIN = 5 mV p-p, RL = 10 kΩ, AV = 1 550 kHz Phase Margin ΦM 52 Degrees

−3 dB Closed-Loop Bandwidth −3 dB AV = 1, VIN = 5 mV p-p 114 kHz

NOISE PERFORMANCE

Voltage Noise en p-p 0.1 Hz to 10 Hz 0.7 μV p-p Voltage Noise Density en f = 1 kHz 27 nV/√Hz Current Noise Density in f = 1 kHz 0.2 pA/√Hz

= −3 V to +3 V 91 103 dB

CM

= 2 kΩ, VO = ±4.7 V 94 103 dB

L

= 2 kΩ to GND 4.80 4.90 V

L

= 2 kΩ to GND −4.90 −4.80 V

L

Rev. 0 | Page 4 of 20

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 Symbol Test Conditions/Comments Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 35 300 μV

−40°C ≤ TA ≤ +125°C 500 μV Offset Voltage Drift ∆VOS/∆T 1 μV/°C Input Bias Current IB ±3 ±10 nA

−40°C ≤ TA ≤ +125°C ±15 nA Input Offset Current IOS ±0.1 ±1.5 nA

−40°C ≤ TA ≤ +125°C ±3 nA Input Voltage Range −15 +15 V Common-Mode Rejection Ratio CMRR VCM = −15 V to +15 V 82 95 dB

−40°C ≤ TA ≤ +125°C 75 dB V

−40°C ≤ TA ≤ +125°C 89 dB Large Signal Voltage Gain AVO RL = 10 kΩ, VO = ±14.7 V 110 120 dB

−40°C ≤ TA ≤ +125°C 105 dB R

−40°C ≤ TA ≤ +125°C 90 dB Input Capacitance

Differential Mode CDM 2.5 pF Common Mode CCM 7 pF

MATCHING CHARACTERISTICS

Offset Voltage TA = 25°C 100 300 μV

OUTPUT CHARACTERISTICS

Output Voltage High VOH R

−40°C ≤ TA ≤ +125°C 14.90 V R

−40°C ≤ TA ≤ +125°C 12.0 V Output Voltage Low VOL RL = 10 kΩ to GND −14.96 −14.80 V

−40°C ≤ TA ≤ +125°C −14.75 V R

−40°C ≤ TA ≤ +125°C −14.0 V Short-Circuit Limit ISC Source/sink ±10 mA Closed-Loop Impedance Z

f = 100 kHz, AV = 1 40 Ω

OUT

POWER SUPPLY

Power Supply Rejection Ratio PSRR VSY = 3 V to 36 V 100 dB

−40°C ≤ TA ≤ +125°C 90 dB Supply Current per Amplifier ISY VO = VSY/2 60 75 μA

−40°C ≤ TA ≤ +125°C 100 μA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 100 kΩ, CL = 30 pF 0.4 V/μs Settling Time tS To 0.1%, 10 V step 23.4 μs Gain Bandwidth Product GBP VIN = 5 mV p-p, RL = 10 kΩ, AV = 100 786 kHz Unity-Gain Crossover UGC VIN = 5 mV p-p, RL = 10 kΩ, AV = 1 800 kHz Phase Margin ΦM 60 Degrees

−3 dB Closed-Loop Bandwidth −3 dB AV = 1, VIN = 5 mV p-p 152 kHz Channel Separation CS f = 1 kHz 100 dB

= −13 V to +13 V 95 107 dB

CM

= 2 kΩ, VO = ±11 V 100 112 dB

L

= 10 kΩ to GND 14.92 14.94 V

L

= 2 kΩ to GND 14.0 14.3 V

L

= 2 kΩ to GND −14.75 −14.65 V

L

Rev. 0 | Page 5 of 20

ADA4096-2

Parameter Symbol Test Conditions/Comments Min Typ Max Unit

NOISE PERFORMANCE

Voltage Noise en p-p 0.1 Hz to 10 Hz 0.7 μV p-p Voltage Noise Density en f = 1 kHz 27 nV/√Hz Current Noise Density in f = 1 kHz 0.2 pA/√Hz

Rev. 0 | Page 6 of 20

ANALOG DEVICES ADA4096-2 Service Manual

FEATURES

APPLICATIONS

PIN CONFIGURATIONS

GENERAL DESCRIPTION

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS

ELECTRICAL SPECIFICATIONS, VSY = ±1.5 V

ELECTRICAL SPECIFICATIONS, VSY = ±5 V

ELECTRICAL SPECIFICATIONS, VSY = ±15 V