Analog Devices AD8591ART, AD8591ARTZ, AD8592ARM, AD8592ARMZ Schematic

CMOS Single-Supply, Rail-to-Rail Input/Output

O

FEATURES

Single-supply operation: 2.5 V to 6 V High output current: ±250 mA Extremely low shutdown supply current: 100 nA Low supply current: 750 μA/Amp Wide bandwidth: 3 MHz Slew rate: 5 V/μs No phase reversal Very low input bias current High impedance outputs when in shutdown mode Unity-gain stable

APPLICATIONS

Mobile communication handset audio PC audio PCMCIA/modem line driving Battery-powered instrumentation Data acquisition ASIC input or output amplifiers LCD display reference level drivers

GENERAL DESCRIPTION

The AD8591, AD8592, and AD8594 are single, dual, and quad rail-to-rail, input and output single-supply amplifiers featuring 250 mA output drive current and a power saving shutdown mode. The AD8592 includes an independent shutdown function for each amplifier. When both amplifiers are in shutdown mode, the total supply current is reduced to less than 1 μA. The AD8591 and AD8594 include a single master shutdown function that reduces the total supply current to less than 1 μA. All amplifier outputs are in a high impedance state when in shutdown mode.

These amplifiers have very low input bias currents, making them suitable for integrators and diode amplification. Outputs are stable with virtually any capacitive load. Supply current is less than 750 μA per amplifier in active mode.

Applications for these amplifiers include audio amplification for portable computers, portable phone headsets, sound ports, sound cards, and set-top boxes. The AD859x family is capable of driving heavy capacitive loads, such as LCD panel reference levels.

The ability to swing rail to rail at both the input and output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems.

Operational Amplifiers with Shutdown

AD8591/AD8592/AD8594

PIN CONFIGURATIONS

1

UT A

AD

V–

2

TOP VIEW

(Not to Scale)

+IN A

3

Figure 1. 6-Lead SOT-23 (RJ Suffix)

OUT A

1

–IN A

2

AD

3

+IN A

SDA

V–

TOP VIEW

(Not to Scale)

4

5

Figure 2. 10-Lead MSOP (RM Suffix)

1

OUT A

2

–IN A

+IN A

3

AD

4

V+

TOP VIEW

+IN B

–IN B

OUT B

(Not to Scale)

5 12

6 11

7 10

8 9

NC

NC = NO CONNECT

Figure 3. 16-Lead Narrow SOIC (R Suffix)

1

OUT A

2

–IN A

3

+IN A

+IN B

–IN B

OUT B

NC

AD

TOP VIEW

4

V+

(Not to Scale)

5

6

7

8

NC = NO CONNECT

Figure 4. 16-Lead TSSOP (RU Suffix)

The AD8591, AD8592, and AD8594 are specified over the industrial temperature range (−40°C to +85°C). The AD8591, single, is available in the tiny 6-lead SOT-23 package. The AD8592, dual, is available in the 10-lead surface-mount MSOP package. The AD8594, quad, is available in 16-lead narrow SOIC and 16-lead TSSOP packages.

8591

8592

8594

10

16

15

14

13

6

5

4

9

8

7

6

16

15

14

13

12

11

10

9

V+

SD

–IN A

V+

OUT B

–IN B

+IN B

SDB

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

SD

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

SD

1106-001

1106-002

01106-003

01106-004

Rev. B

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.

AD8591/AD8592/AD8594

REVISION HISTORY

1/09—Rev. A to Rev. B

Updated Format .................................................................. Universal

Changes to Table 1 ............................................................................ 3

Changes to Table 2 ............................................................................ 4

Deleted Spice Model for AD8591/AD8592/AD8594 Amplifiers

Sections ............................................................................................ 12

Changes to PC98-Compliant Headphone/Speaker Amplifier

Section and Figure 38 ..................................................................... 12

Changes to Figure 39 ...................................................................... 13

Changes to Figure 42 and Figure 43 ............................................. 14

Updated Outline Dimensions ....................................................... 15

Changes to Ordering Guide .......................................................... 16

Rev. B | Page 2 of 16

AD8591/AD8592/AD8594

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

VS = 2.7 V, VCM = 1.35 V, TA = 25°C, unless otherwise noted.

Table 1.

Parameter Symbol Test Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 25 mV

−40°C < TA < +85°C 30 mV Input Bias Current IB 5 50 pA

−40°C < TA < +85°C 60 pA Input Offset Current IOS 1 25 pA

−40°C < TA < +85°C 30 pA Input Voltage Range 0 2.7 V Common-Mode Rejection Ratio CMRR VCM = 0 V to 2.7 V 38 45 dB Large Signal Voltage Gain AVO R Offset Voltage Drift ΔVOS/ΔT −40°C < TA < +85°C 20 μV/°C Bias Current Drift ΔIB/ΔT −40°C < TA < +85°C 50 fA/°C Offset Current Drift ΔIOS/ΔT −40°C < TA < +85°C 20 fA/°C

OUTPUT CHARACTERISTICS

Output Voltage High VOH I

−40°C to +85°C 2.5 V Output Voltage Low VOL I

−40°C to +85°C 125 mV Output Current I Open-Loop Impedance Z

±250 mA

OUT

f = 1 MHz, AV = 1 60 Ω

OUT

POWER SUPPLY

Power Supply Rejection Ratio PSRR VS = 2.5 V to 6 V 45 55 dB Supply Current per Amplifier ISY V

−40°C < TA < +85°C 1.25 mA Supply Current Shutdown Mode ISD All amplifiers shut down 0.1 1 μA

−40°C < TA < +85°C 1 μA I I

Amplifier 1 shut down (AD8592) 1.4 mA

SD1

Amplifier 2 shut down (AD8592) 1.4 mA

SD2

SHUTDOWN INPUTS

Logic High Voltage V Logic Low Voltage V

−40°C < TA < +85°C 1.6 V

INH

−40°C < TA < +85°C 0.5 V

INL

Logic Input Current IIN −40°C < TA < +85°C 1 μA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 3.5 V/μs Settling Time tS To 0.01% 1.4 μs Gain Bandwidth Product GBP 2.2 MHz Phase Margin Φo 67 Degrees Channel Separation CS f = 1 kHz, RL = 2 kΩ 65 dB

NOISE PERFORMANCE

Voltage Noise Density en f = 1 kHz 45 nV/√Hz f = 10 kHz 30 nV/√Hz Current Noise Density in f = 1 kHz 0.05 pA/√Hz

= 2 kΩ, VO = 0.3 V to 2.4 V 25 V/mV

L

= 10 mA 2.55 2.61 V

L

= 10 mA 60 100 mV

L

= 0 V 1 mA

O

Rev. B | Page 3 of 16

AD8591/AD8592/AD8594

VS = 5.0 V, VCM = 2.5 V, TA = 25°C, unless otherwise noted.

Table 2.

Parameter Symbol Test Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 2 25 mV

−40°C < TA < +85°C 30 mV Input Bias Current IB 5 50 pA

−40°C < TA < +85°C 60 pA Input Offset Current IOS 1 25 pA

−40°C < TA < +85°C 30 pA Input Voltage Range 0 5 V Common-Mode Rejection Ratio CMRR VCM = 0 V to 5 V 38 47 dB Large Signal Voltage Gain AVO R Offset Voltage Drift ΔVOS/ΔT −40°C < TA < +85°C 20 μV/°C Bias Current Drift ΔIB/ΔT −40°C < TA < +85°C 50 fA/°C Offset Current Drift ΔIOS/ΔT −40°C < TA < +85°C 20 fA/°C

OUTPUT CHARACTERISTICS

Output Voltage High VOH I

−40°C to +85°C 4.85 V Output Voltage Low VOL I

−40°C to +85°C 125 mV Output Current I Open-Loop Impedance Z

±250 mA

OUT

f = 1 MHz, AV = 1 40 Ω

OUT

POWER SUPPLY

Power Supply Rejection Ratio PSRR VS = 2.5 V to 6 V 45 55 dB Supply Current per Amplifier ISY V

−40°C < TA < +85°C 1.75 mA Supply Current Shutdown Mode ISD All amplifiers shut down 0.1 1 μA

−40°C < TA < +85°C 1 μA I I

Amplifier 1 shut down (AD8592) 1.6 mA

SD1

Amplifier 2 shut down (AD8592) 1.6 mA

SD2

SHUTDOWN INPUTS

Logic High Voltage V Logic Low Voltage V

−40°C < TA < +85°C 2.4 V

INH

−40°C < TA < +85°C 0.8 V

INL

Logic Input Current IIN −40°C < TA < +85°C 1 μA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 5 V/μs Full Power Bandwidth BWP 1% distortion 325 kHz Settling Time tS To 0.01% 1.6 μs Gain Bandwidth Product GBP 3 MHz Phase Margin Φo 70 Degrees Channel Separation CS f = 1 kHz, RL = 10 kΩ 65 dB

NOISE PERFORMANCE

Voltage Noise Density en f = 1 kHz 45 nV/√Hz f = 10 kHz 30 nV/√Hz Current Noise Density in f = 1 kHz 0.05 pA/√Hz

= 2 kΩ, VO = 0.5 V to 4.5 V 15 30 V/mV

L

= 10 mA 4.9 4.94 V

L

= 10 mA 50 100 mV

L

= 0 V 1.25 mA

O

Rev. B | Page 4 of 16

AD8591/AD8592/AD8594

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter Rating

Supply Voltage 6 V Input Voltage GND to VS Differential Input Voltage ±6 V Output Short-Circuit Duration to GND1 Observe Derating Curves Storage Temperature Range −65°C to +150°C Operating Temperature Range −40°C to +85°C Junction Temperature Range −65°C to +150°C Lead Temperature (Soldering, 60 sec) 300°C

1

For supplies less than ±5 V, the differential input voltage is limited to the

supplies.

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 listed in the operational sections 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 worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages.

Table 4.

Package Type θ

6-Lead SOT-23 (RJ) 230 92 °C/W 10-Lead MSOP (RM) 200 44 °C/W 16-Lead SOIC (R) 120 36 °C/W 16-Lead TSSOP (RU) 180 35 °C/W

θJC Unit

JA

ESD CAUTION

Rev. B | Page 5 of 16

AD8591/AD8592/AD8594

–

TYPICAL PERFORMANCE CHARACTERISTICS

1k

VS = 2.7V T

= 25°C

A

0.8

0.7

TA = 25°C

100

10

ΔOUTPUT VOL TAGE (mV)

1

0.1

SOURCE

LOAD CURRENT (mA)

SINK

Figure 5. Output Voltage to Supply Rail vs. Load Current

10k

VS = 5V T

= 25°C

A

1k

100

SOURCE

10

ΔOUTPUT VOLTAGE (mV)

1

SINK

0.6

0.5

0.4

0.3

0.2

SUPPLY CURRENT/ AMPLIFIER (mA)

0.1

0

1k0.01 0. 1 1 10 100

01106-005

0.75 1.25 1.75 2.25 2.75 3.00

SUPPLY VOLTAGE (±V)

01106-008

Figure 8. Supply Current per Amplifier vs. Supply Voltage

2

V

= 5V

S

V

= 2.5V

CM

–3

–4

–5

–6

INPUT OFFSET VOLTAGE (mV)

–7

0.1

LOAD CURRENT (mA)

Figure 6. Output Voltage to Supply Rail vs. Load Current

0.90

0.85

0.80

0.75

0.70

0.65

0.60

SUPPLY CURRENT/ AMPLIFI ER (mA)

0.55

0.50 –40 –20 1000 20406080

VS = 5V

VS = 2.7V

TEMPERATURE ( °C)

Figure 7. Supply Current per Amplifier vs. Temperature

–8

1k0.01 0.1 1 10 100

1106-006

–50 –35 85

5

–15

TEMPERATURE ( °C)

25 45 65

01106-009

Figure 9. Input Offset Voltage vs. Temperature

8

VS = 2.7V, 5V

= VS/2

V

CM

7

6

5

4

INPUT BIAS CURRENT (pA)

3

2

–50 –35 855–15 25 45 65

01106-007

TEMPERATURE ( °C)

01106-010

Figure 10. Input Bias Current vs. Temperature

Rev. B | Page 6 of 16

Analog Devices AD8591ART, AD8591ARTZ, AD8592ARM, AD8592ARMZ Schematic [ru]

FEATURES

APPLICATIONS

GENERAL DESCRIPTION

PIN CONFIGURATIONS

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

THERMAL RESISTANCE

ESD CAUTION

TYPICAL PERFORMANCE CHARACTERISTICS