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

ADA4096-2

ABSOLUTE MAXIMUM RATINGS

Table 5.

Parameter Rating

Supply Voltage 36 V Input Voltage

Operating Condition −V ≤ VIN ≤ +V Overvoltage Condition1 (−V) − 32 V ≤ VIN ≤ (+V) + 32 V

Differential Input Voltage2 ±VSY Input Current ±5 mA Output Short-Circuit Duration to

GND

Storage Temperature Range −65°C to +150°C Operating Temperature Range −40°C to +125°C Junction Temperature Range −65°C to +150°C Lead Te mperature (Soldering,

60 sec)

1

Performance not guaranteed during overvoltage conditions.

2

Limit the input current to ±5 mA.

Indefinite

300°C

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

THERMAL RESISTANCE

θJA is specified for the device soldered on a 4-layer JEDEC standard printed circuit board (PCB) with zero airflow. The exposed pad is soldered to the application board.

Table 6. Thermal Resistance

Package Type θJA θJC Unit

8-Lead MSOP (RM-8) 142 45 °C/W 8-Lead LFCSP (CP-8-10) 76 43 °C/W

ESD CAUTION

Rev. 0 | Page 7 of 20

ADA4096-2

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 25°C, unless otherwise noted.

±1.5 V CHARACTERISTICS

180

160

140

120

100

80

60

NUMBER OF AMPLI FIERS

40

20

0

–200

–175

–75

–150

–125

–100

–50

0

–25

VOS (µV)

255075

Figure 3. Input Offset Voltage Distribution

25

ADA4096-2 V

= ±1.5V

SY

T

= –40°C TO +125°C

A

20

15

10

NUMBER OF AMPLI FIERS

5

0

–2.5 –2.0 –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2. 0 2.5

TCVOS (µV/°C)

Figure 4. Offset Voltage Drift Distribution

30

20

10

0

(nA)

B

I

–10

–20

–30

–40

–1.5 –1.0 –0.5 0 0. 5 1.0 1. 5

Figure 5. Input Bias Current vs. V

T

= +25°C

A

T

VCM (V)

= –40°C

A

and Temperature

CM

100

T

A

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

125

150

ADA4096-2 V

= ±1.5V

SY

T

= +125°C

A

= +85°C

TA = 0°C

175

200

MORE

09241-003

09241-004

09241-005

10k

1k

100

TO RAIL (mV)

OUT

V

10

1

0.001 0.01 0.1 1 10 100

SOURCING

SINKING

LOAD CURRENT (mA)

Figure 6. Dropout Voltage vs. Load Current

140

120

100

80

60

40

GAIN (dB)

20

0

–20

–40

–60

100 1k 10k 100k 1M 10M

GAIN

FREQUENCY (Hz)

PHASE

ADA4096-2 V

SY

T

= 25°C

A

Figure 7. Open-Loop Gain and Phase vs. Frequency

50

G = +100

40

30

G = +10

20

10

G = +1

0

–10

–20

CLOSED-LOOP GAIN (dB)

–30

–40

–50

10 100 1k 10k 100k 1M 10M

FREQUENCY (Hz)

Figure 8. Closed-Loop Gain vs. Frequency

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

= ±1.5V

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

200

150

100

50

0

–50

–100

PHASE (Degrees)

09241-008

09241-006

09241-007

Rev. 0 | Page 8 of 20

ADA4096-2

10k

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

1k

100

G = +100

()

10

OUT

Z

G = +10

1

0.1

0.01 10 100 1k 10k 100k 1M 10M

G = +1

FREQUENCY (Hz)

Figure 9. Output Impedance vs. Frequency

120

100

80

60

40

PSRR (dB)

20

0

PSRR–

PSRR+

ADA4096-2 V

SY

T

A

= ±1.5V

= 25°C

09241-009

0.08

0.06

0.04

0.02

0

(V)

OUT

–0.02

V

–0.04

–0.06

–0.08

–0.10

0 5 10 15 20 25 30

TIME (µs)

Figure 12. Small Signal Transient Response

1.6

1.4

1.2

1.0

(V)

0.8

OUT

V

0.6

0.4

0.2

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

R

= 10k

L

C

= 100pF

L

G = +1

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

R

= 10k

F

R

= 100

S

09241-011

–20

10 100 1k 10k 100k 1M 10M

FREQUENCY (Hz)

Figure 10. PSRR vs. Frequency

09241-052

0

0 20406080100

TIME (µs)

09241-055

Figure 13. Positive Overload Recovery

2.0

1.5

1.0

0.5

(V)

0

OUT

V

–0.5

–1.0

–1.5

–2.0

0 20406080100120

TIME (µs)

ADA4096-2 V

= ±1.5V

SY

T

= 25°C

A

R

= 10k

L

C

= 100pF

L

G = +1

Figure 11. Large Signal Transient Response

09241-010

0.2 ADA4096-2 V

= ±1.5V

SY

0

T

= 25°C

A

R

= 10k

F

–0.2

R

= 100

S

–0.4

–0.6

(V)

OUT

–0.8

V

–1.0

–1.2

–1.4

–1.6

0 20406080100

TIME (µs)

Figure 14. Negative Overload Recovery

09241-056

Rev. 0 | Page 9 of 20

ADA4096-2

±5 V CHARACTERISTICS

250

200

150

100

NUMBER OF AMPLI FIERS

50

ADA4096-2 V

= ±5V

SY

T

= 25°C

A

10k

ADA4096-2 V

= ±5V

SY

= 25°C

T

A

1k

100

TO RAIL (mV)

OUT

V

10

SOURCING

SINKING

0

–200

–175

–75

–150

–125

–100

–50

0

–25

VOS (µV)

255075

100

125

150

Figure 15. Input Offset Voltage Distribution

40

ADA4096-2 V

= ±5V

SY

35

T

= –40°C TO +125°C

A

30

25

20

15

NUMBER OF AMPLI FIERS

10

5

0

–2.5 –2.0 –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2. 0 2.5

TCVOS (µV/°C)

Figure 16. Offset Voltage Drift Distribution

30

ADA4096-2 V

= ±5V

SY

20

10

0

= +85°C

T

A

–10

(nA)

B

I

–20

T

= +25°C

–30

–40

–50

–5–4–3–2–1012345

A

T

A

= –40°C

T

A

= 0°C

Figure 17. Input Bias Current vs. V

VCM (V)

T

= +125°C

A

and Temperature

CM

175

200

1

0.001 0.01 0.1 1 10 100

MORE

09241-015

LOAD CURRENT (mA)

09241-023

Figure 18. Dropout Voltage vs. Load Current

140

120

100

80

60

40

GAIN (dB)

20

0

–20

–40

–60

100 1k 10k 100k 1M 10M

09241-016

GAIN

FREQUENCY (Hz)

PHASE

ADA4096-2 V

SY

= 25°C

T

A

= ±5V

200

150

100

50

0

–50

–100

PHASE (Degrees)

09241-020

Figure 19. Open-Loop Gain and Phase vs. Frequency

50

G = +100

40

30

G = +10

20

10

G = +1

0

–10

–20

CLOSED-LOOP GAIN (dB)

–30

–40

–50

10 100 1k 10k 100k 1M 10M

09241-050

FREQUENCY (Hz)

ADA4096-2

= ±5V

V

SY

= 25°C

T

A

09241-024

Figure 20. Closed-Loop Gain vs. Frequency

Rev. 0 | Page 10 of 20

ADA4096-2

10k

ADA4096-2

= ±5V

V

SY

= 25°C

T

A

1k

100

G = +100

()

10

OUT

Z

G = +10

1

0.1

0.01 10 100 1k 10k 100k 1M 10M

G = +1

FREQUENCY (Hz)

Figure 21. Output Impedance vs. Frequency

140

120

100

80

60

PSRR (dB)

40

20

0

PSRR–

PSRR+

ADA4096-2 V

SY

T

A

= ±5V

= 25°C

09241-021

0.08

0.06

0.04

0.02

0

(V)

OUT

–0.02

V

–0.04

–0.06

–0.08

–0.10

0 5 10 15 20 25 30

TIME (µs)

Figure 24. Small Signal Transient Response

6

5

4

(V)

3

OUT

V

2

1

ADA4096-2

= ±5V

V

SY

= 25°C

T

A

R

= 10k

L

= 100pF

C

L

G = +1

ADA4096-2

= ±5V

V

SY

= 25°C

T

A

= 10k

R

F

= 100

R

S

09241-018

–20

10 100 1k 10k 100k 1M 10M

FREQUENCY (Hz)

Figure 22. PSRR vs. Frequency

09241-053

0

0 20406080100

TIME (µs)

09241-057

Figure 25. Positive Overload Recovery

6

4

2

(V)

0

OUT

V

–2

–4

–6

0 50 100 150 200 250 300 350 400

TIME (µs)

Figure 23. Large Signal Transient Response

ADA4096-2 V

= ±5V

SY

T

= 25°C

A

R

= 10k

L

C

= 100pF

L

G = +1

09241-017

1

ADA4096-2 V

= ±5V

SY

= 25°C

T

A

0

= 10k

R

F

= 100

R

S

–1

(V)

–2

OUT

V

–3

–4

–5

0 20406080100

TIME (µs)

Figure 26. Negative Overload Recovery

09241-058

Rev. 0 | Page 11 of 20

ADA4096-2

±15 V CHARACTERISTICS

250

200

150

100

NUMBER OF AMPLI FIERS

50

ADA4096-2 V

= ±15V

SY

T

= 25°C

A

10k

ADA4096-2 V

= ±15V

SY

= 25°C

T

A

1k

100

TO RAIL (mV)

OUT

V

10

SOURCING

SINKING

0

–200

–175

–75

–150

–125

–100

–50

0

–25

VOS (µV)

255075

100

125

Figure 27. Input Offset Voltage Distribution

35

ADA4096-2 V

= ±15V

SY

T

= –40°C TO +125°C

30

A

25

20

15

10

NUMBER OF AMPLI FIERS

5

0

–2.5 –2.0 –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2. 0 2.5

TCVOS (µV/°C)

Figure 28. Offset Voltage Drift Distribution

40

ADA4096-2 V

= ±15V

30

SY

20

T

= +25°C

A

= +85°C

A

VCM (V)

10

0

–10

(nA)

B

I

–20

–30

–40

–50

–60

–15 –10 –5 0 5 10 15

= 0°C

T

A

T

= –40°C

A

T

Figure 29. Input Bias Current vs. V

= +125°C

T

A

and Temperature

CM

150

175

200

1

0.001 0.01 0.1 1 10 100

MORE

09241-027

LOAD CURRENT (mA)

09241-034

Figure 30. Dropout Voltage vs. Load Current

140

120

100

80

60

40

GAIN (dB)

20

0

–20

–40

–60

100 1k 10k 100k 1M 10M

09241-028

GAIN

FREQUENCY (Hz)

ADA4096-2 V

SY

= 25°C

T

A

PHASE

= ±15V

200

150

100

50

0

–50

–100

PHASE (Degrees)

09241-030

Figure 31. Open-Loop Gain and Phase vs. Frequency

50

G = +100

40

30

G = +10

20

10

G = +1

0

–10

CLOSED-LOOP GAIN (dB)

–20

–30

–40

10 100 1k 10k 100k 1M 10M

09241-051

FREQUENCY (Hz)

ADA4096-2 V

= ±15V

SY

= 25°C

T

A

09241-036

Figure 32. Closed-Loop Gain vs. Frequency

Rev. 0 | Page 12 of 20

ADA4096-2

10k

ADA4096-2

= ±15V

V

SY

= 25°C

T

A

1k

100

()

10

G = +100

OUT

Z

G = +10

1

0.1

0.01 10 100 1k 10k 100k 1M 10M

G = +1

FREQUENCY (Hz)

Figure 33. Output Impedance vs. Frequency

120

100

80

60

PSRR–

40

PSRR (dB)

20

0

PSRR+

ADA4096-2 V

SY

T

A

= ±15V

= 25°C

09241-035

0.08

0.06

0.04

0.02

0

(V)

OUT

–0.02

V

–0.04

–0.06

–0.08

–0.10

0 5 10 15 20 25 30

TIME (µs)

Figure 36. Small Signal Transient Response

16

14

12

10

(V)

8

OUT

V

6

4

2

ADA4096-2

= ±15V

V

SY

= 25°C

T

A

R

= 10k

L

= 100pF

C

L

G = +1

ADA4096-2

= ±15V

V

SY

= 25°C

T

A

= 10k

R

F

= 100

R

S

09241-032

–20

10 100 1k 10k 100k 1M 10M

FREQUENCY (Hz)

Figure 34. PSRR vs. Frequency

15

10

5

(V)

0

OUT

V

–5

–10

–15

0 50 100 150 200 250 300 350 400

TIME (µs)

ADA4096-2 V T R C G = +1

Figure 35. Large Signal Transient Response

= ±15V

SY

= 25°C

A

= 10k

L

= 100pF

L

0

0 20406080100

09241-054

TIME (µs)

09241-059

Figure 37. Positive Overload Recovery

0

ADA4096-2 V

= ±15V

SY

–2

= 25°C

T

A

R

= 10k

F

= 100

R

–4

S

–6

(V)

–8

OUT

V

–10

–12

–14

–16

0 20406080100

09241-031

TIME (µs)

09241-060

Figure 38. Negative Overload Recovery

Rev. 0 | Page 13 of 20

ADA4096-2

–

COMPARATIVE VOLTAGE AND VARIABLE VOLTAGE GRAPHS

0.5

0.4

0.3

0.2

0.1

0

NOISE (µV)

–0.1

–0.2

–0.3

–0.4

–10 –8 –6 –4 –2 0 2 4 6 8 10

TIME (s)

Figure 39. Input Voltage Noise, 0.1 Hz to 10 Hz Bandwidth

80

ADA4096-2

= ±15V

V

SY

= 25°C

T

A

–90

–100

ADA4096-2 V

= ±15V

SY

= 25°C

T

A

09241-039

70

ADA4096-2 T

= 25°C

A

=



R

60

L

50

40

30

20

10

SUPPLY CURRENT PER AMPLIFIER (µA)

0

0332282420161284

SUPPLY VOLTAGE (V)

6

09241-043

Figure 42. Supply Current vs. Supply Voltage

100

ADA4096-2 V

= ±15V

SY

T

= 25°C

A

–110

–120

CHANNEL SEPARATIO N (dB)

–130

–140

20 100 1k 10k 50k

FREQUENCY (Hz)

=

V

IN

10V p-p

10k

2k

Figure 40. Channel Separation vs. Frequency

1k

09241-040

(nV/ Hz)

n

e

10

0.1 1k100101

FREQUENCY (Hz)

Figure 43. Voltage Noise Density

09241-044

120

110

100

90

80

70

CMRR (dB)

60

50

40

30

20

100 1k 10k 100k 1M 10M

V

SY

= ±1.5V

V

SY

= ±5V

VSY = ±15V

FREQUENCY (Hz)

ADA4096-2 T

Figure 41. CMRR vs. Frequency

= 25°C

A

09241-041

50

ADA4096-2 V

= ±15V

SY

T

= 25°C

A

R

= 2k

L

40

G = +1 V

= 100mV p-p

IN

30

20

OVERSHOOT (%)

10

0

0.01 10.1

Figure 44. Overshoot vs. Load Capacitance

C

LOAD

OS–

OS+

(nF)

09241-100

Rev. 0 | Page 14 of 20

ADA4096-2

V

T

THEORY OF OPERATION

INPUT STAGE

CC

R2R1

I1

Q5

V

+IN

–IN

D3

OVP

EE

D1

D4

D2

Q3

Q1 Q2

Q4

I2

R3 R4

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. When the input common-mode voltage approaches V

− 1.5 V, Q1 to Q4 shut down as I1 reaches

CC

its minimum voltage compliance. Conversely, when the input common-mode voltage approaches V

+ 1.5 V, Q5 to Q8 shut

EE

down as I2 reaches its minimum voltage compliance. This topology allows for maximum input dynamic range because the amplifier can function with its inputs at 200 mV outside the rail (at room temperature).

As with any rail-to-rail input amplifier, V

mismatch between

OS

the two input pairs determines the CMRR of the amplifier. If the input common-mode voltage range is kept within 1.5 V of each rail, transitions between the input pairs are avoided, thus improving the CMRR by approximately 10 dB (see Table 3 and Table 4).

Q6

R5

D6

Q11

Q8Q7

C1

Q9

Q12

Q13

Q10

I3

C2

Q14

D8

×1

D7Q15

Although phase inversion persists for only as long as the inputs are saturated, it can be detrimental to applications where the amplifier is part of a closed-loop system. The ADA4096-2 is free from phase inversion over the entire common-mode voltage range, as well as the overvoltage protected range stated in the Absolute Maximum Ratings section, Table 5. Figure 46 shows the ADA4096-2 in a unity-gain configuration with the input signal at ±40 V and the amplifier supplies at ±10 V.

1

R7

D10 Q20

Q18D9

Q17

R6

Q16

D11

T

Q19

OU

09241-045

PHASE INVERSION

Some single-supply amplifiers exhibit phase inversion when the input signal extends beyond the common-mode voltage range of the amplifier. When the input devices become saturated, the inverting and noninverting inputs exchange functions, causing the output to move in the opposing direction.

Rev. 0 | Page 15 of 20

CH1 10.0V CH2 10.0V M2. 00ms A CH1 –3.6V

T 34.20%

Figure 46. No Phase Reversal

09241-046

ADA4096-2

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.

Figure 47 shows the input current limiting capability of the

ADA4096-2 (green curves) compared to using a 5 kΩ series

resistor (red curves).

7

6

5

4

3

2

1

0

–1

–2

–3

INPUT BIAS CURRENT (mA)

–4

–5

–6

–7

–48 –40 –32 –24 –16 –8 0 8 16 24 32 40 48

= –15V

EE

V

VIN (V)

Figure 47. Input Current Limiting Capability

= +15V

= 0V

EE

CC

V

LOW RDSON SERIES FET

5k SERIES RESISTOR

09241-047

Figure 47 was generated with the ADA4096-2 in a buffer configuration with the supplies connected to GND (or ±15 V) and the positive input swept until it exceeds the supplies by 32 V. In general, input current is limited to 1 mA during positive overvoltage conditions and 200 A during negative undervoltage conditions. For example, at an overvoltage of 20 V, the ADA4096-2 input current is limited to 1 mA, providing a current limit equivalent to a series 20 k resistor. Figure 47 also shows that the current limiting circuitry is active whether the amplifier is powered or not.

Note that Figure 47 represents input protection under abnormal conditions only. The correct amplifier operation input voltage range (IVR) is specified in Table 2 to Table 4 .

Rev. 0 | Page 16 of 20

ADA4096-2

COMPARATOR OPERATION

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. For railto-rail output op amps, the output stage is generally a ratioed current mirror with bipolar or MOSFET transistors. With the part operating open loop, the second stage increases the current drive to the ratioed mirror to close the loop, but it cannot, which results in an increase in supply current. With the op amp configured as a comparator, the supply current can be significantly higher (see Figure 48).

500

400

V

= HIGH

OUT

300

V

= LOW

200

100

SUPPLY CURRENT PER AMPLIFIER (µA)

0

0332282420161284

OUT

BUFFER

SUPPLY VOLTAGE (V)

6

09241-048

Figure 48. Comparator Supply Current

Rev. 0 | Page 17 of 20

ADA4096-2

OUTLINE DIMENSIONS

3.20

3.00

2.80

3.20

3.00

2.80

PIN 1

IDENTIFIER

0.95

0.85

0.75

0.15

0.05

COPLANARITY

0.10

8

1

COMPLIANT TO JEDEC STANDARDS MO-187-AA

0.65 BSC

5

4

0.40

0.25

5.15

4.90

4.65

1.10 MAX

15° MAX

6° 0°

0.23

0.09

0.80

0.55

0.40

10-07-2009-B

Figure 49. 8-Lead Mini Small Outline Package [MSOP]

(RM-8)

Dimensions shown in millimeters

1.70

1.60

5

4

BOTTOM VIEW

1.50

EXPOSED

PAD

0.50 BSC

8

1

P I (

1.10

1.00

0.90

I N R

1

N

R

O

C

I

A

T

D

)

5

1

.

0

PIN 1 INDEX

AREA

2.00

BSC SQ

TOP VIEW

0.425

0.350

0.275

0.60

0.55

0.50

SEATING

PLANE

FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET.

0.30

0.25

0.20

0.05 MAX

0.02 NOM

0.20 REF

Figure 50. 8-Lead Lead Frame Chip Scale Package [LFCSP_UD]

2 mm × 2 mm Body, Ultra Thin, Dual Lead

(CP-8-10)

Dimensions shown in millimeters

Rev. 0 | Page 18 of 20

063009-A

ADA4096-2

ORDERING GUIDE

1, 2

Model

ADA4096-2ARMZ −40°C to +125°C 8-Lead Mini Small Outline Package [MSOP] RM-8 A2T ADA4096-2ARMZ-R7 −40°C to +125°C 8-Lead Mini Small Outline Package [MSOP] RM-8 A2T ADA4096-2ARMZ-RL −40°C to +125°C 8-Lead Mini Small Outline Package [MSOP] RM-8 A2T ADA4096-2ACPZ-R7 −40°C to +125°C 8-Lead Frame Chip Scale Package [LFCSP_UD] CP-8-10 A4 ADA4096-2ACPZ-RL −40°C to +125°C 8-Lead Frame Chip Scale Package [LFCSP_UD] CP-8-10 A4 ADA4096-2WARMZ-R7 −40°C to +125°C 8-Lead Mini Small Outline Package [MSOP] RM-8 A2T ADA4096-2WARMZ-RL −40°C to +125°C 8-Lead Mini Small Outline Package [MSOP] RM-8 A2T

1

Z = RoHS Compliant Part.

2

W = Qualified for Automotive Applications.

AUTOMOTIVE PRODUCTS

The ADA4096-2W models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.

Temperature Range Package Description Package Option Branding

Rev. 0 | Page 19 of 20

ADA4096-2

NOTES

Rev. 0 | Page 20 of 20

ANALOG DEVICES ADA4096-2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User 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

ABSOLUTE MAXIMUM RATINGS

THERMAL RESISTANCE

ESD CAUTION

TYPICAL PERFORMANCE CHARACTERISTICS

±1.5 V CHARACTERISTICS

±5 V CHARACTERISTICS

±15 V CHARACTERISTICS

COMPARATIVE VOLTAGE AND VARIABLE VOLTAGE GRAPHS

THEORY OF OPERATION

INPUT STAGE

PHASE INVERSION

INPUT OVERVOLTAGE PROTECTION

COMPARATOR OPERATION

OUTLINE DIMENSIONS

ORDERING GUIDE

AUTOMOTIVE PRODUCTS