ALD1701GPAL - Advanced Linear Devices Inc

www.aldinc.com

GENERAL DESCRIPTION

The ALD1701A/ALD1701B/ALD1701/ALD1701G is a monolithic CMOS

micropower high slew rate operational amplifier intended for a broad

range of analog applications using ±1V to ±5V dual power supply

systems, as well as +2V to +10V battery operated systems. All device

characteristics are specified for +5V single supply or ±2.5V dual supply

systems. Supply current is 250µA maximum at 5V supply voltage. It is

manufactured with Advanced Linear Devices' enhanced ACMOS silicon

gate CMOS process.

The ALD1701A/ALD1701B/ALD1701/ALD1701G is designed to offer a

trade-off of performance parameters providing a wide range of desired

specifications. It has been developed specifically for the +5V single

supply or ±1V to ±5V dual supply user and offers the popular industry

standard pin configuration of µA741 and ICL7611 types.

Several important characteristics of the device make application easier to

implement at those voltages. First, the operational amplifier can operate

with rail to rail input and output voltages. This means the signal input

voltage and output voltage can be equal to the positive and negative

supply voltages. This feature allows numerous analog serial stages and

flexibility in input signal bias levels. Second, the device was designed to

accommodate mixed applications where digital and analog circuits may

operate off the same power supply or battery. Third, the output stage can

typically drive up to 50pF capacitive and 10KΩ resistive loads.

These features, combined with extremely low input currents, high open

loop voltage gain of 100V/mV, useful bandwidth of 700KHz, a slew rate

of 0.7V/µs, low power dissipation of 0.5mW, low offset voltage and

temperature drift, make the ALD1701 a versatile, micropower operational

amplifier.

The ALD1701A/ALD1701B/ALD1701/ALD1701G, designed and fabri-

cated with silicon gate CMOS technology, offers 1pA typical input bias

current. On chip offset voltage trimming allows the device to be used

without nulling in most applications. Additionally, robust design and

rigorous screening make this device especially suitable for operation in

temperature-extreme environments and rugged conditions.

FEATURES

• All parameters specified for +5V single

supply or ±2.5V dual supply systems

• Rail to rail input and output voltage ranges

• No frequency compensation required --

unity gain stable

• Extremely low input bias currents --

1.0pA typical (30pA max.)

• Ideal for high source impedance applications

• Dual power supply ±1.0V to ±5.0V operation

• Single power supply +2.0V to +10.0V

operation

• High voltage gain -- typically 100V/mV

@ ±2.5V(100dB)

• Drive as low as 10KΩ load

• Output short circuit protected

• Unity gain bandwidth of 0.7MHz

• Slew rate of 0.7V/µs

• Low power dissipation

• Suitable for rugged, temperature-extreme

environments

MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER

ALD1701A/ALD1701B

ALD1701/ALD1701G

ADVANCED

LINEAR

DEVICES, INC.

APPLICATIONS

• Voltage amplifier

• Voltage follower/buffer

• Charge integrator

• Photodiode amplifier

• Data acquisition systems

• High performance portable instruments

• Signal conditioning circuits

• Sensor and transducer amplifiers

• Low leakage amplifiers

• Active filters

• Sample/Hold amplifier

• Picoammeter

• Current to voltage converter

PIN CONFIGURATION

* N/C pins are internally connected. Do not connect externally.

N/C

-IN

+IN

N/C

OUT

N/C

V-

V+

Operating Temperature Range

0°C to +70°C0°C to +70°C -55°C to 125°C

8-Pin 8-Pin 8-Pin

Small Outline Plastic Dip CERDIP

Package (SOIC) Package Package

ALD1701ASAL ALD1701APAL ALD1701ADA

ALD1701BSAL ALD1701BPAL ALD1701BDA

ALD1701SAL ALD1701PAL ALD1701DA

ALD1701GSAL ALD1701GPAL ALD1701GDA

* Contact factory for leaded (non-RoHS) or high temperature versions.

ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))

TOP VIEW

SAL, PAL, DA PACKAGES

ALD1701A/ALD1701B Advanced Linear Devices 2 of 9

ALD1701/ALD1701G

ABSOLUTE MAXIMUM RATINGS

Supply voltage, V+ 10.6V

Differential input voltage range -0.3V to V+ +0.3V

Power dissipation 600 mW

Operating temperature range SAL, PAL packages 0°C to +70°C

DA package -55°C to +125°C

Storage temperature range -65°C to +150°C

Lead temperature, 10 seconds +260°C

CAUTION: ESD Sensitive Device. Use static control procedures in ESD controlled environment.

Supply VS±1.0 ±5.0 ±1.0 ±5.0 ±1.0 ±5.0 ±1.0 ±5.0 Dual Supply

Voltage V+2.0 10.0 2.0 10.0 2.0 10.0 2.0 10.0 V Single Supply

Input Offset VOS 0.9 2.0 4.5 10.0 mV RS ≤ 100KΩ

Voltage 1.7 2.8 5.3 11.0 mV 0°C ≤ TA ≤ +70°C

Input Offset IOS 1.0 25 1.0 25 1.0 25 1.0 30 pA TA = 25°C

Current 240 240 240 450 pA 0°C ≤ TA ≤ +70°C

Input Bias IB1.0 30 1.0 30 1.0 30 1.0 50 pA TA = 25°C

Current 300 300 300 600 pA 0°C ≤ TA ≤ +70°C

Input Voltage VIR -0.3 5.3 -0.3 5.3 -0.3 5.3 -0.3 5.3 V V+ = +5V

Range -2.8 2.8 -2.8 2.8 -2.8 2.8 -2.8 2.8 V VS = ±2.5V

Input RIN 1012 1012 1012 1012 Ω

Resistance

Input Offset TCVOS 7777µV/°CR

S ≤ 100KΩ

Voltage Drift

Power Supply PSRR 70 80 65 80 65 80 60 80 dB RS ≤ 100KΩ

Rejection Ratio 70 80 65 80 65 80 60 80 dB 0°C ≤ TA ≤ +70°C

Common Mode CMRR 70 83 65 83 65 83 60 83 dB RS ≤ 100KΩ

Rejection Ratio 70 83 65 83 65 83 60 83 dB 0°C ≤ TA ≤ +70°C

Large Signal AV40 100 32 100 32 100 20 80 V/ mV RL = 100KΩ

Voltage Gain 1000 1000 1000 1000 V/ mV RL ≥ 1MΩ

20 20 20 10 V/ mV RL = 100KΩ

0°C ≤ TA ≤ +70°C

Output VO low 0.001 0.01 0.001 0.01 0.001 0.01 0.001 0.01 V RL =1MΩ V+ = +5V

Voltage VO high 4.99 4.999 4.99 4.999 4.99 4.999 4.99 4.999 V 0°C ≤ TA ≤ +70°C

Range VO low -2.48 -2.40 -2.48 -2.40 -2.48 -2.40 -2.48 -2.40 V RL =100KΩ

VO high 2.40 2.48 2.40 2.48 2.40 2.48 2.40 2.48 V 0°C ≤ TA ≤ +70°C

Output Short ISC 1 1 1 1 mA

Circuit Current

Supply Current IS 120 250 120 250 120 250 120 300 µAV

IN = 0V

No Load

Power PD 1.25 1.25 1.25 1.50 mW VS = ±2.5V

Dissipation

OPERATING ELECTRICAL CHARACTERISTICS

TA = 25°C VS = ±2.5V unless otherwise specified

1701A 1701B 1701 1701G Test

Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit Conditions

ALD1701A/ALD1701B Advanced Linear Devices 3 of 9

ALD1701/ALD1701G

1701BDA 1701DA Test

Parameter Symbol Min Typ Max Min Typ Max Unit Conditions

VS = ±2.5V -55°C ≤ TA ≤ +125°C unless otherwise specified

Input Offset VOS 3.0 6.5 mV RS ≤ 100KΩ

Voltage

Input Offset IOS 8.0 8.0 nA

Current

Input Bias IB10.0 10.0 nA

Current

Power Supply PSRR 60 75 60 75 dB RS ≤ 100KΩ

Rejection Ratio

Common Mode CMRR 60 83 60 83 dB RS ≤ 100KΩ

Rejection Ratio

Large Signal AV15 50 15 50 V/ mV RL = 100KΩ

Voltage Gain

Output Voltage VO low -2.47 -2.40 -2.47 -2.40 V

Range VO high 2.35 2.45 2.35 2.45 V RL = 100KΩ

Input CIN 11 11pF

Capacitance

Bandwidth BW400 700 400 700 400 700 700 KHz

Slew Rate SR0.33 0.7 0.33 0.7 0.33 0.7 0.7 V/µsA

V = +1

RL = 100KΩ

Rise time t r 0.2 0.2 0.2 0.2 µsR

L = 100KΩ

Overshoot 20 20 20 20 % RL =100KΩ

Factor CL = 50pF

Settling Time t s10.0 10.0 10.0 10.0 µs 0.1%

AV = -RL=100KΩ

CL = 50pF

TA = 25°C VS = ±2.5V unless otherwise specified

1701A 1701B 1701 1701G Test

Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit Conditions

Power Supply PSRR 83 83 83 83 dB RS ≤ 100KΩ

Rejection Ratio

Common Mode CMRR 83 83 83 83 dB RS ≤ 100KΩ

Rejection Ratio

Large Signal AV250 250 250 250 V/mV RL =100KΩ

Voltage Gain

Output Voltage VO low -4.98 -4.90 -4.98 -4.90 -4.98 -4.90 -4.98 -4.90 V RL =100KΩ

Range VO high 4.90 4.98 4.90 4.98 4.90 4.98 4.90 4.98 V

Bandwidth BW1.0 1.0 1.0 1.0 MHz

Slew Rate SR1.0 1.0 1.0 1.0 V/µsA

V = +1

CL = 50pF

TA = 25°C VS = ±5.0V unless otherwise specified

1701A 1701B 1701 1701G Test

Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit Conditions

OPERATING ELECTRICAL CHARACTERISTICS (cont'd)

ALD1701A/ALD1701B Advanced Linear Devices 4 of 9

ALD1701/ALD1701G

TYPICAL PERFORMANCE CHARACTERISTICS

INPUT BIAS CURRENT AS A FUNCTION

OF AMBIENT TEMPERATURE

AMBIENT TEMPERATURE (°C)

1000

100

0.1

1.0

INPUT BIAS CURRENT (pA)

100-25 0 75 1255025-50

10000

= ±2.5V

OPEN LOOP VOLTAGE GAIN AS A

FUNCTION OF LOAD RESISTANCE

10M

LOAD RESISTANCE (Ω)

10K 100K 1M

1000

100

OPEN LOOP VOLTAGE

GAIN (V/mV)

= ±2.5V

= 25°C

Design & Operating Notes:

1. The ALD1701A/ALD1701B/ALD1701/ALD1701G CMOS operational

amplifier uses a 3 gain stage architecture and an improved frequency

compensation scheme to achieve large voltage gain, high output

driving capability, and better frequency stability. In a conventional

CMOS operational amplifier design, compensation is achieved with

a pole splitting capacitor together with a nulling resistor. This method

is, however, very bias dependent and thus cannot accommodate the

large range of supply voltage operation as is required from a stand

alone CMOS operational amplifier. The ALD1701A/ALD1701B/

ALD1701/ALD1701G is internally compensated for unity gain stability

using a novel scheme that does not use a nulling resistor. This

scheme produces a clean single pole roll off in the gain characteris-

tics while providing for more than 70 degrees of phase margin at the

unity gain frequency.

2. The ALD1701A/ALD1701B/ALD1701/ALD1701G has complemen-

tary p-channel and n-channel input differential stages connected in

parallel to accomplish rail to rail input common mode voltage range.

This means that with the ranges of common mode input voltage close

to the power supplies, one of the two differential stages is switched

off internally. To maintain compatibility with other operational ampli-

fiers, this switching point has been selected to be about 1.5V below

the positive supply voltage. Since offset voltage trimming on the

ALD1701A/ALD1701B/ALD1701/ALD1701G is made when the input

voltage is symmetrical to the supply voltages, this internal switching

does not affect a large variety of applications such as an inverting

amplifier or non-inverting amplifier with a gain larger than 2.5 (5V

operation), where the common mode voltage does not make excur-

sions above this switching point. The user should however, be aware

that this switching does take place if the operational amplifier is

connected as a unity gain buffer, and should make provision in his

design to allow for input offset voltage variations.

3. The input bias and offset currents are essentially input protection

diode reverse bias leakage currents, and are typically less than 1pA

at room temperature. This low input bias current assures that the

analog signal from the source will not be distorted by input bias

currents. Normally, this extremely high input impedance of greater

than 1012Ω would not be a problem as the source impedance would

limit the node impedance. However, for applications where source

impedance is very high, it may be necessary to limit noise and hum

pickup through proper shielding.

4. The output stage consists of class AB complementary output drivers,

capable of driving a low resistance load. The output voltage swing is

limited by the drain to source on-resistance of the output transistors

as determined by the bias circuitry, and the value of the load resistor.

When connected in the voltage follower configuration, the oscillation

resistant feature, combined with the rail to rail input and output

feature, makes an effective analog signal buffer for medium to high

source impedance sensors, transducers, and other circuit networks.

5. The ALD1701A/ALD1701B/ALD1701/ALD1701G operational ampli-

fier has been designed to provide full static discharge protection.

Internally, the design has been carefully implemented to minimize

latch up. However, care must be exercised when handling the device

to avoid strong static fields that may degrade a diode junction, causing

increased input leakage currents. In using the operational amplifier,

the user is advised to power up the circuit before, or simultaneously

with any input voltages applied, and to limit input voltages not to

exceed 0.3V of the power supply voltage levels.

6. The ALD1701A/ALD1701B/ALD1701/ALD1701G, with its

micropower operation, offers numerous benefits in reduced power

supply requirements, less noise coupling and current spikes, less

thermally induced drift, better overall reliability due to lower self

heating, and lower input bias current. It requires practically no warm

up time as the chip junction heats up to only 0.1°C above ambient

temperature under most operating conditions.

COMMON MODE INPUT VOLTAGE RANGE

AS A FUNCTION OF SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

COMMON MODE INPUT

VOLTAGE RANGE (V)

±7

±6

±5

±4

±3

±2

±1

00 ±1 ±2 ±3 ±4 ±5 ±6 ±7

= 25°C

SUPPLY CURRENT (µA)

SUPPLY CURRENT AS A FUNCTION

OF SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

400

200

300

100

0±1±2±3±4±5±6

= -55°C

+25°C

+70°C+125°C

INPUTS GROUNDED

OUTPUT UNLOADED

-25°C

ALD1701A/ALD1701B Advanced Linear Devices 5 of 9

ALD1701/ALD1701G

INPUT OFFSET VOLTAGE AS A FUNCTION

OF COMMON MODE INPUT VOLTAGE

COMMON MODE INPUT VOLTAGE (V)

-2 -1 0 +1 +3+2

-5

-10

-15

INPUT OFFSET VOLTAGE (mV)

= ±2.5V

= 25°C

LARGE - SIGNAL TRANSIENT

RESPONSE

2V/div

500mV/div 5µs/div

= ±1.0V

= 25°C

= 100KΩ

= 50pF

LARGE - SIGNAL TRANSIENT

RESPONSE

5V/div

2V/div 5µs/div

VS = ±2.5V

TA = 25°C

RL = 100KΩ

CL = 50pF

INPUT OFFSET VOLTAGE AS A FUNCTION

OF AMBIENT TEMPERATURE

REPRESENTATIVE UNITS

AMBIENT TEMPERATURE (°C)

INPUT OFFSET VOLTAGE (mV)

-50 -25 0 +25 +50 +75 +100 +125

-2

-1

-4

-3

-5

= ±2.5V

OPEN LOOP VOLTAGE GAIN AS A FUNCTION

OF FREQUENCY

FREQUENCY (Hz)

1 10 100 1K 10K 1M 10M100K

120

100

-20

OPEN LOOP VOLTAGE

GAIN (dB)

180

135

PHASE SHIFT IN DEGREES

= ±2.5V

= 25°C

SMALL - SIGNAL TRANSIENT

RESPONSE

100mV/div

20mV/div 2µs/div

VS = ±2.5V

TA = 25°C

RL = 100KΩ

CL = 50pF

TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)

OPEN LOOP VOLTAGE GAIN AS A FUNCTION

OF SUPPLY VOLTAGE AND TEMPERATURE

SUPPLY VOLTAGE (V)

1000

100

OPEN LOOP VOLTAGE

GAIN (V/mV)

0 ±2 ±4 ±6 ±8

-55°C ≤ T

≤ +125°C

= 100KΩ

OUTPUT VOLTAGE SWING AS A FUNCTION

OF SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

0±1±2±3±4±7±6±5

±6

±5

±4

±3

±2

±1

OUTPUT VOLTAGE SWING (V)

-55°C ≤ T

≤ +125°C

= 100KΩ

ALD1701A/ALD1701B Advanced Linear Devices 6 of 9

ALD1701/ALD1701G

TYPICAL APPLICATIONS

LOW VOLTAGE INSTRUMENTATION AMPLIFIER

RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER

+OUTPUT

0.1µF

* See Rail to Rail Waveform

0≤ VIN ≤ 5V

VIN

ZIN = 1012Ω

50K

100K

f max = 20KHz

-40mV ≤ V

≤ 40mV

0.1µF

V+

V-

GAIN = 25 V- ≤ V

OUT

≤ V+. All resistors are 1%.

V+ = +1.0V, V- = -1.0V. Short circuit input current 1µA.

V-

100K

0.1µF

V+

0.1µF

500K

0.1µF

V+

V+ 1M

1M V-

V- 0.1µF

OUT

HIGH INPUT IMPEDANCE RAIL-TO-RAIL

PRECISION DC SUMMING AMPLIFIER

- 2.5V

10M

= 10MΩ Accuracy limited by resistor tolerances and input offset voltage

+2.5V

0.1µF

0.1µFV

OUT

V- ≤ V

≤ V+

V- ≤ V

OUT

≤ V+



OUT

= V

+ V

- V

RAIL-TO-RAIL VOLTAGE COMPARATOR

OUTPUT

50K

0.1µF

+5V

10M

+5V

VIN

WIEN BRIDGE OSCILLATOR (RAIL-TO-RAIL)

SINE WAVE GENERATOR

10K

OUTPUT

10K

+2.5V

-2.5V

.01µF

2πR

f = ~ 1.6KHz

C = .01µFR = 10K

* See Rail to Rail Waveform

PHOTO DETECTOR CURRENT TO

VOLTAGE CONVERTER

+2.5V

-2.5V

= 5M

= 10K

OUT

= I x R

PHOTODIODE

Performance waveforms.

Upper trace is the output of a

Wien Bridge Oscillator. Lower

trace is the output of Rail-to-rail

voltage follower.

+5V

OUTPUT

+5V

INPUT

RAIL-TO-RAIL WAVEFORM

ALD1701A/ALD1701B Advanced Linear Devices 7 of 9

ALD1701/ALD1701G

8 Pin Plastic SOIC Package

SOIC-8 PACKAGE DRAWING

Millimeters Inches

Min Max Min MaxDim

D-8

1.75

0.25

0.45

0.25

5.00

4.05

6.30

0.937

8°

0.50

0.053

0.004

0.014

0.007

0.185

0.140

0.224

0.024

0°

0.010



0.069

0.010

0.018

0.010

0.196

0.160

0.248

0.037

8°

0.020

1.27 BSC 0.050 BSC

1.35

0.10

0.35

0.18

4.69

3.50

5.70

0.60

0°

0.25

S (45°)

ALD1701A/ALD1701B Advanced Linear Devices 8 of 9

ALD1701/ALD1701G

8 Pin Plastic DIP Package

PDIP-8 PACKAGE DRAWING

EE1

Millimeters Inches

Min Max Min MaxDim

D-8

S-8

3.81

0.38

1.27

0.89

0.38

0.20

9.40

5.59

7.62

2.29

7.37

2.79

1.02

0°

5.08

1.27

2.03

1.65

0.51

0.30

11.68

7.11

8.26

2.79

7.87

3.81

2.03

15°

0.105

0.015

0.050

0.035

0.015

0.008

0.370

0.220

0.300

0.090

0.290

0.110

0.040

0°

0.200

0.050

0.080

0.065

0.020

0.012

0.460

0.280

0.325

0.110

0.310

0.150

0.080

15°

ALD1701A/ALD1701B Advanced Linear Devices 9 of 9

ALD1701/ALD1701G

8 Pin CERDIP Package

CERDIP-8 PACKAGE DRAWING

D-8

3.55

1.27

0.97

0.36

0.20

5.59

7.73



3.81

3.18

0.38

0°

5.08

2.16

1.65

0.58

0.38

10.29

7.87

8.26

5.08

1.78

2.49

15°

Millimeters Inches

Min Max Min MaxDim 0.140

0.050

0.038

0.014

0.008

0.220

0.290

0.150

0.125

0.015

0°

0.200

0.085

0.065

0.023

0.015

0.405

0.310

0.325

0.200

0.070

0.098

15°

2.54 BSC

7.62 BSC

0.100 BSC

0.300 BSC