Datasheet MXL1001ACJ8, MXL1001ACN8, MXL1001ACS8, MXL1001AMH, MXL1001AMJ8 Datasheet (Maxim)

19-0286; Rev 1; 8/94

Precision Operational Amplifier

_______________General Description

The MXL1001 offers significant specification improvement
over earlier precision operational amplifiers and is pin­compatible with the industry-standard LT1001. Particular
attention has been paid to the optimization of key parame­ters such as input offset voltage, common-mode rejection,
and power-supply rejection. In addition, the high-perfor­mance MXL1001C commercial temperature device pro­vides considerable cost savings when compared to
equivalent grades of competing precision amplifiers.

The input offset voltage of all units is less than 60µV,
allowing the premium military device, the MXL1001AM, to
be specified at 15µV max. Power dissipation is close to
half that of the industry-standard OP-07 precision op
amp, without sacrificing noise or speed performance. A
useful by-product of lower dissipation is decreased
warm-up drift.

________________________Applications

Thermocouple Amplifiers
Low-Level Signal Processing
Strain Gauge Amplifiers
High-Accuracy Data Acquisition

__________________Pin Configuration

TOP VIEW

V

TRIM

OS

8

V

TRIM

OS

1 7

-IN

TRIM

V

OS

-IN
+IN

V-

MXL1001

3

+IN

TO-99

1
2

MXL1001

3
4

DIP/SO

V+

62

V

OUT

5

N.C.

4
V-

8

TRIM

V

OS

7

V+

6

V

OUT

5

N.C.

____________________________Features

♦ Guaranteed Low Offset Voltage

MXL1001AM: 15µV max
MXL1001C: 60µV max

♦ Guaranteed Low Drift

MXL1001AM: 0.6µV/°C max
MXL1001C: 1.0µV/°C max

♦ Guaranteed Low Bias Current

MXL1001AM: 2nA max
MXL1001C: 4nA max

♦ Guaranteed CMRR

MXL1001AM: 114dB min
MXL1001C: 110dB min

♦ Guaranteed PSRR

MXL1001AM: 110dB min
MXL1001C: 106dB min

♦ Low Power Dissipation

MXL1001AM: 75mW max
MXL1001C: 80mW max

♦ Low Noise: 0.3µV

p-p

______________Ordering Information

PART

MXL1001ACN8
MXL1001CN8
MXL1001ACS8 0°C to +70°C
MXL1001CS8
MXL1001ACJ8 0°C to +70°C
MXL1001CJ8
MXL1001ACH 0°C to +70°C
MXL1001CH
MXL1001AMJ8 -55°C to +125°C
MXL1001MJ8 -55°C to +125°C 8 CERDIP
MXL1001AMH
MXL1001MH -55°C to +125°C

TEMP. RANGE PIN-PACKAGE

0°C to +70°C
0°C to +70°C

0°C to +70°C 8 SO

0°C to +70°C 8 CERDIP

0°C to +70°C 8 TO-99

-55°C to +125°C 8 TO-99

8 Plastic DIP
8 Plastic DIP
8 SO

8 CERDIP

8 TO-99

8 CERDIP

8 TO-99

__________Typical Operating Circuit

SENSING
JUNCTION

REFERENCE
JUNCTION

R1

R2

R4

HIGH-STABILITY

THERMOCOUPLER AMPLIFIER

R3

MXL1001

R1R3R2

=

R4

MXL1001

________________________________________________________________

Maxim Integrated Products

Call toll free 1-800-998-8800 for free samples or literature.

1

Precision Operational Amplifier

ABSOLUTE MAXIMUM RATINGS

Total Supply Voltage (V+ to V-) ...........................................±22V

Continuous Power Dissipation .........................................500mW

TO-99(H)—derate at 7.1mW/°C above +80°C
CERDIP(J)—derate at 6.7mW/°C above +75°C
Plastic DIP(P)—derate at 5.6mW/°C above +36°C

Small Outline(S)—derate at 5mW/°C above +55°C

Differential Input Voltage .....................................................±30V

Input Voltage (Note 1)..........................................................±22V

MXL1001

Note 1: For supply voltages less than ±22V, the absolute maximum input voltage is equal to the supply voltage.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(VS= ±15V, TA= +25°C, unless otherwise noted.)

SYMBOLPARAMETER

Input Offset Voltage
Long-Term Input Offset

Voltage Stability

Input Offset Current
Input Bias Current
Input Noise Voltage

Input Noise Voltage Density 10.0 13.0

Input Resistance
(Differential Mode)

Large-Signal Voltage Gain

Output Voltage Swing

Power Consumption

Note 2: MXL1001A grade VOSis measured one minute after application of power. For all other grades VOSis measured

approximately 0.5 seconds after application of power.

Note 3: Long-Term Input Offset Voltage Stability refers to the average trend line of V

30 days of operation. Excluding the initial hour of operation, changes in V

2.5µV. Parameter is sample tested.

Note 4: Sample tested.
Note 5: Guaranteed by design.

V

OS

OS

B

N p-p

e

N

IN

A

VO

V

O

P

D

CONDITIONS

(Note 2)

(Note 3)

0.1Hz to 10Hz (Note 4)
fO= 10Hz (Note 4)
fO= 100Hz (Note 4)
fO= 1000Hz (Note 4)

(Note 5)

VCM= ±13V
VS= ±3V to ±18V
RL≥ 2kΩ, VO= ±12V
RL≥ 1kΩ, VO= ±10V
RL≥ 2kΩ
RL≥ 1kΩ
RL≥ 2kΩ (Note 4)
A

= +1V (Note 4)

VCL

VS= ±15V, no load
VS= ±3V, no load

Duration of Output Short Circuit ....................................Indefinite

Operating Temperature Ranges:

MXL1001C_/AC_.................................................0°C to +70°C

MXL1001M_/AM_...........................................-55°C to +125°C

Junction Temperature (T

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

MXL1001AM
MXL1001AC

MIN TYP MAX

MXL1001AM
MXL1001AC

450 800

300 500
±13.0 ±14.0
±12.0 ±13.5

OS

during the first 30 operating days are typically

OS

).................................-65°C to +160°C

J

MXL1001M
MXL1001C

MIN TYP MAX

715

10 25

0.2 1.0VOS/Time

0.3 0.6e

10.3 18.0

9.6 11.0

46 75

46

vs. Time over extended periods after the first

18 60
18 60

0.3 1.5

0.4 3.8

±0.7 ±4.0

0.3 0.6

10.5 18.0

10.0 13.0

9.8 11.0

15 80

±13 ±14
110 126
106 123
400 800

250 500
±13.0 ±14.0
±12.0 ±13.5

0.1 0.25

0.4 0.8
48 80

48

UNITS

µV

µV/

Month

nA0.3 2.0I
nA±0.5 ±2.0I

µV

p-p

nV/√Hz

MΩ30 100R

V±13 ±14IVRInput Voltage Range
dB114 126CMRRCommon-Mode Rejection Ratio
dB110 123PSRRPower-Supply Rejection Ratio

V/mV

V

V/µs0.1 0.25SRSlew Rate
MHz0.4 0.8BWClosed-Loop Bandwidth

mW

2 _______________________________________________________________________________________

Precision Operational Amplifier

ELECTRICAL CHARACTERISTICS

(VS= ±15V, -55°C ≤ TA≤ +125°C, unless otherwise noted.)

SYMBOLPARAMETER

Input Offset Voltage
Average Temperature Coefficient

of Input Offset Voltage
Input Offset Current

Input Bias Current

Large-Signal Voltage Gain
Output Voltage Swing V
Power Dissipation P

CONDITIONS

(Note 6)

OS

OS

OS

B

VCM= ±13V
VS= ±3V to ±18V
RL≥ 2kΩ, VO= ±10V

VO

RL≥ 2kΩ ±12.5 ±13.5 ±12.5 ±13.5 V

O

No load 55 90 60 100 mW

D

MXL1001AM

MIN TYP MAX

MXL1001M

MIN TYP MAX

45 160

0.3 1.0

1.2 7.6

±1.5 ±8.0
±13 ±14
106 120
100 117
200 700

UNITS

µV/°C0.2 0.6TCV

V/mV300 700A

ELECTRICAL CHARACTERISTICS

(VS= ±15V, 0°C ≤ TA≤ +70°C, unless otherwise noted.)

SYMBOLPARAMETER

Input Offset Voltage
Average Temperature Coefficient

of Input Offset Voltage
Input Offset Current

Input Bias Current

Large-Signal Voltage Gain
Output Voltage Swing V
Power Dissipation

Note 6: MXL1001A grade offset voltage is measured one minute after application of power. For all other grades VOSis measured

0.5 seconds after power on.

OS

P

OS

OS

B

VO

O
D

CONDITIONS

(Note 6)

VCM= ±13V
VS= ±3V to ±18V
RL≥ 2kΩ, VO= ±10V
RL≥ 2kΩ ±12.5 ±13.8 ±12.5 ±13.8 V
No load 50 85 55 90 mW

MXL1001AC

MIN TYP MAX

MXL1001C

MIN TYP MAX

30 110

0.3 1.0

0.6 5.3

±1.0 ±5.5
±13 ±14
106 123
103 120
250 750

UNITS

µV/°C0.2 0.6TCV

V/mV350 750A

MXL1001

µV30 60V

nA0.8 4.0I
nA±1.0 ±4.0I

V±13 ±14IVRInput Voltage Range
dB110 122CMRRCommon-Mode Rejection Ratio
dB104 117PSRRPower-Supply Rejection Ratio

µV20 60V

nA0.5 3.5I
nA±0.7 ±3.5I

V±13 ±14IVRInput Voltage Range
dB110 124CMRRCommon-Mode Rejection Ratio
dB106 120PSRRPower-Supply Rejection Ratio

_______________________________________________________________________________________ 3

Precision Operational Amplifier

__________Applications Information

The MXL1001 series devices are pin-compatible with the
OP-07, OP-05, 725, 108A or 101A amplifiers. The
MXL1001 amplifiers can be used to upgrade older
designs using these devices, with or without removal of
external frequency compensation or nulling components.
The MXL1001 can also be used in 741, LF156 or OP-15
applications provided the nulling circuitry is removed.

MXL1001

The MXL1001 is specified over a wide supply voltage
range from ±3V to ±18V. Operation with lower supplies
is possible down to ±1.2V (two NiCd batteries), howev­er, at this level the device is stable only in closed-loop
gains of +2 and above (or inverting gain of one or high­er). Unless proper care is exercised, thermocouple
effects caused by temperature gradients across dissimi­lar metals at the input terminal connections, can exceed
the inherent offset-voltage drift of the amplifier. Air cur­rents over the device leads should be minimized, pack­age leads should be short, and the two input leads
should be as close together as possible and maintained
at the same temperature.

Offset-Voltage Adjustment

The input offset voltage of the MXL1001, and its temper­ature drift, are minimized by zener-zap trimming at the
wafer level. If further nulling of VOSis required, this can
be performed using a 10kΩ or 20kΩ potentiometer with
no degradation of VOSdrift with temperature. Trimming
to a value other than zero creates a drift of
(VOS/300)µV/°C; i.e., if VOSis adjusted to 300µV, the
change in drift will be 1µV/°C. The adjustment range
with a 10kΩ or 20kΩ potentiometer is approximately
±2.5mV. If less adjustment range is needed, the sensi­tivity and resolution of the offset nulling can be improved
by using a potentiometer of lower ohmic value in con­junction with fixed resistors.

Figure 1. Optional Offset Nulling Circuit

___________________Chip Topography

V

OS

VOS TRIM -IN

SUBSTRATE IS CONNECTED TO V-

20k

1

INPUT

TRIM VOS TRIM V+

2

3

0.102"

(2.59mm)

8

MXL1001

4

V-

+IN

V+

7

6

OUTPUT

V

OUT

0.076"

(1.93mm)

V-



Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

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