MAXIM MAX9914, MAX9917 Technical data

General Description

The single MAX9914/MAX9915 and dual MAX9916/
MAX9917 operational amplifiers feature maximized ratio
of gain bandwidth to supply current and are ideal for
battery-powered applications such as portable instru­mentation, portable medical equipment, and wireless
handsets. These CMOS op amps feature an ultra-low
1pA input bias current, rail-to-rail inputs and outputs,
low 20µA supply current, and operate from a single

1.8V to 5.5V supply. For additional power conservation,
the MAX9915/MAX9917 feature a low-power shutdown
mode that reduces supply current to 1nA, and puts the
amplifier outputs in a high-impedance state. These
devices are unity-gain stable with a 1MHz gain-band­width product.

The MAX9914 and MAX9915 are available in 5-pin and
6-pin SC70 packages, respectively. The MAX9916 is
available in an 8-pin SOT23 package, and the
MAX9917 in a 10-pin µMAX®package. All devices are
specified over the -40°C to +85°C extended operating
temperature range.

Applications

Portable Medical Devices

Portable Test Equipment

RF Tags

Laptops

Data-Acquisition Equipment

Features

♦ High 1MHz GBW

♦ Ultra-Low 20µA Supply Current

♦ Single 1.8V to 5.5V Supply Voltage Range

♦ Ultra-Low 1pA Input Bias Current

♦ Rail-to-Rail Input and Output Voltage Ranges

♦ Low ±200µV Input Offset Voltage

♦ Low 0.001µA Shutdown Current

♦ High-Impedance Output During Shutdown

(MAX9915/MAX9917)

♦ Unity-Gain Stable

♦ Available in Tiny SC70, SOT23, and µMAX

Packages

MAX9914–MAX9917

1MHz, 20µA, Rail-to-Rail

I/O Op Amps with Shutdown

________________________________________________________________ Maxim Integrated Products 1

19-3407; Rev 1; 10/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART

TEMP RANGE

PIN-

TOP

MARK

MAX9914EXK+T

5 SC70-5 AGB

MAX9914EXK-T

5 SC70-5 AGB

MAX9915EXT+T

6 SC70-6 ACB

MAX9915EXT-T

6 SC70-6 ACB

MAX9916EKA+T

AEJZ

MAX9916EKA-T

AEJZ

MAX9917EUB

10 µMAX —

MAX9917EUB+

10 µMAX —

R1
47kΩ

R2
10kΩ

R

G

*

*OPTIONAL INPUT RESISTOR R

G,

IS FOR GAIN ADJUSTMENT

MICROPOWER, TWO-OP-AMP INSTRUMENTATION AMPLIFIER

R3
10kΩ

R4
47kΩ

GAIN = 1

+

R4
R2

FOR R1 = R4 AND R2 = R3

GAIN

=

(R1 + R2 + R3 + R4)

(R2 + R3)

MAX9916

V

SS

V

DD

3V

IN-

INB+

INA+

OUTA

OUT

INA-

OUTB

INB-

IN+

Typical Operating Circuit

Selector Guide

PART

AMPLIFIERS

PER

PACKAGE

SHUTDOWN

MODE

PACKAGE

MAX9914EXK-T

1No5 SC70-5

MAX9915EXT-T

1 Yes 6 SC70-6

MAX9916EKA-T

2No

8 SOT23-8

MAX9917EUB 2 Yes 10 µMAX

+Denotes lead-free package.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

PACKAGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C 8 SOT23-8

-40°C to +85°C 8 SOT23-8

-40°C to +85°C

-40°C to +85°C

MAX9914–MAX9917

1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

Power-Supply Voltage (VDDto VSS) ......................-0.3V to +6.0V

IN_+, IN_-, OUT_,

SHDN_............... (VSS- 0.3V) to (VDD+ 0.3V)

Current into IN_+, IN_- ......................................................±20mA

Output Short-Circuit Duration to V

DD

or VSS..............Continuous

Continuous Power Dissipation (T

A

= +70°C)

5-Pin SC70 (derate 3.1mW/°C above +70°C)............. 247mW

6-Pin SC70 (derate 3.1mW/°C above +70°C)............. 245mW

8-Pin SOT23 (derate 9.1mW/°C above +70°C)........... 727mW

10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW

Operating Temperature Range .......................... -40°C to +85°C

Junction Temperature .....................................................+150°C

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

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

ELECTRICAL CHARACTERISTICS

(VDD= 1.8V to 5.5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/ 2, RL= ∞ connected to VDD/ 2, SHDN_ = VDD, TA= +25°C, unless otherwise

noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range V

DD

Guaranteed by PSRR test 1.8 5.5 V

VDD = 1.8V 20

VDD = 5.5V 20 25

VDD = 1.8V 40

Supply Current I

DD

VDD = 5.5V 40 50

µA

Shutdown Supply Current

)

SHDN_ = GND, MAX9915/MAX9917

0.5 µA

Input Offset Voltage V

OS

±1mV

Input-Offset-Voltage Matching MAX9916/MAX9917

µV

Input Bias Current I

B

(Note 2) ±1

pA

Input Offset Current I

OS

(Note 2) ±1

pA

Common mode 1

Input Resistance R

IN

Differential mode, -1mV < VIN < +1mV 10

GΩ

Input Common-Mode Range V

CM

Guaranteed by CMRR test

V

SS

-

0.1

VDD +

0.1

V

Common-Mode Rejection Ratio CMRR -0.1V < VCM < VDD + 0.1V, VDD = 5.5V 70 80 dB

Power-Supply Rejection Ratio PSRR 1.8V < VDD < 5.5V 65 85 dB

25mV < V

OUT

< VDD - 25mV,

R

L

= 100kΩ, VDD = 5.5V

95

Open-Loop Gain A

VOL

100mV < V

OUT

< V

DD

- 100mV,

R

L

= 5kΩ, VDD = 5.5V

95

dB

RL = 100kΩ

5

RL = 5kΩ 50 70

Output-Voltage-Swing High V

OH

VDD - V

OUT

RL = 1kΩ

mV

RL = 100kΩ

5

RL = 5kΩ 50 70Output-Voltage-Swing Low V

OL

V

OUT

- V

SS

RL = 1kΩ

mV

Channel-to-Channel Isolation CH

ISO

Specified at DC, MAX9916/MAX9917

dB

Output Short-Circuit Current I

OUT(SC)

mA

I

DD(SHDN_

MAX9914/MAX9915

MAX9916/MAX9917

0.001

±0.2

±250

120

110

2.5

250

2.5

250

100

±15

±10
±10

MAX9914–MAX9917

1MHz, 20µA, Rail-to-Rail I/O Op Amps

with Shutdown

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 1.8V to 5.5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/ 2, RL= ∞ connected to VDD/ 2, SHDN_ = VDD, TA= +25°C, unless otherwise

noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VDD = 1.8V to 3.6V, MAX9915/MAX9917 0.4

SHDN_ Logic Low V

IL

VDD = 3.6V to 5.5V, MAX9915/MAX9917 0.8

V

VDD = 1.8V to 3.6V, MAX9915/MAX9917 1.4

SHDN_ Logic High V

IH

VDD = 3.6V to 5.5V, MAX9915/MAX9917 2

V

I

IL

1

SHDN_ Input Bias Current

I

IH

SHDN_ = VDD, MAX9915/MAX9917

nA

Output Leakage in Shutdown

)

SHDN_ = VSS, V

OUT

= 0V to VDD,

MAX9915/MAX9917

1

nA

Gain-Bandwidth Product 1

MHz

Phase Margin CL = 15pF 45

degrees

Gain Margin CL = 15pF 10 dB

Slew Rate

V/µs

AV = 1V/V 30

AV = 10V/V

RL = 5kΩ, AV = 1V/V

Capacitive-Load Stability (See
the D r i vi ng C ap aci ti ve Load s
S ecti on)

C

LOAD

No sustained
oscillations

pF

Input Voltage-Noise Density f = 1kHz

nV/√Hz

Input Current-Noise Density f = 1kHz

pA/√Hz

Settling Time To 0.1%, V

OUT

= 2V step, AV = -1V/V

µs

Delay Time to Shutdown t

SH

IDD = 5% of normal operation,
V

DD

= 5.5V, V

SHDN_

= 5.5V to 0 step

2µs

Delay Time to Enable t

EN

V

OUT

= 2.7V, V

OUT

settles to 0.1%,

V

DD

= 5.5V, V

SHDN_

= 0 to 5.5V step

10 µs

Power-Up Time VDD = 0 to 5.5V step 2 µs

ELECTRICAL CHARACTERISTICS

(VDD= 1.8V to 5.5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/ 2, RL= ∞ connected to VDD/ 2, SHDN_ = VDD, TA= -40°C to +85°C, unless

otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range V

DD

Guaranteed by PSRR test 1.8 5.5 V

29

Supply Current I

DD

VDD = 5.5V

60

µA

Shutdown Supply Current

)

SHDN_ = GND, MAX9915/MAX9917 1 µA

Input Offset Voltage V

OS

±3mV

Inp ut- O ffset- V ol tag e Tem p er atur e
C oeffi ci ent

TC

VOS

±5

µV/°C

I

SHDN_ = VSS, MAX9915/MAX9917 (Note 2)

OUT(SHDN_

R

= 1kΩ, AV = 1V/V 100

ISO

500

500

0.5

100

100

160

0.001

3.5

I

DD(SHDN_

MAX9914/MAX9915

MAX9916/MAX9917

MAX9914–MAX9917

1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown

4 _______________________________________________________________________________________

Note 1: Specifications are 100% tested at TA= +25°C (exceptions noted). All temperature limits are guaranteed by design.
Note 2: Guaranteed by design, not production tested

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 1.8V to 5.5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/ 2, RL= ∞ connected to VDD/ 2, SHDN_ = VDD, TA= -40°C to +85°C, unless

otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Bias Current I

B

pA

Input Offset Current I

OS

pA

Input Common-Mode Range V

CM

Guaranteed by CMRR test

V

SS

-

VDD +

V

Common-Mode Rejection Ratio CMRR -0.05V < VCM < VDD + 0.05V, VDD = 5.5V 60 dB

Power-Supply Rejection Ratio PSRR 1.8V < VDD < 5.5V 60 dB

25mV < V

OUT

< V

DD

- 25mV,

R

L

= 100kΩ, VDD = 5.5V

85

Open-Loop Gain A

VOL

150mV < V

OUT

< VDD - 150mV,

R

L

= 5kΩ, VDD = 5.5V

85

dB

RL = 100kΩ 6

Output-Voltage-Swing High V

OH

VDD - V

OUT

RL = 5kΩ 90

mV

RL = 100kΩ 5

Output-Voltage-Swing Low V

OL

V

OUT

- V

SS

RL = 5kΩ 90

mV

VDD = 1.8V to 3.6V, MAX9915/MAX9917 0.4

SHDN_ Logic Low V

IL

VDD = 3.6V to 5.5V, MAX9915/MAX9917 0.8

V

VDD = 1.8V to 3.6V, MAX9915/MAX9917 1.4

SHDN_ Logic High V

IH

VDD = 3.6V to 5.5V, MAX9915/MAX9917 2

V

I

IL

SHDN_ = VSS, MAX9915/MAX9917 5 nA

SHDN_ Input Bias Current

I

IH

SHDN_ = VDD, MAX9915/MAX9917

nA

Output Leakage in Shutdown

(

)

SHDN_ = VSS, V

OUT

= 0V to VDD,

MAX9915/MAX9917

nA

±30

±20

I

SHDN_

OUT

0.05

0.05

1000

1000

MAX9914–MAX9917

1MHz, 20µA, Rail-to-Rail I/O Op Amps

with Shutdown

_______________________________________________________________________________________ 5

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

MAX9914 toc04

TEMPERATURE (°C)

V

OS

(µV)

603510-15

-180

-160

-140

-120

-100

-80

-60

-40

-20

0

-200

-40 85

INPUT BIAS CURRENT

vs. TEMPERATURE

MAX9914 toc05

TEMPERATURE (°C)

I

B

(pA)

603510-15

-2

-1

0

1

2

3

4

5

6

7

-3

-40 85

IB+

IB-

INPUT BIAS CURRENT

vs. INPUT COMMON-MODE VOLTAGE

MAX9914 toc06

VCM (V)

I

B

(pA)

3.02.51.5 2.00.5 1.00

-4

-3

-2

-1

0

1

2

3

4

5

-5

-0.5 3.5
FREQUENCY (Hz)

PSRR (dB)

1k100101

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-100

0.1 10k

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX9914 toc07

COMMON-MODE REJECTION RATIO

vs. TEMPERATURE

MAX9914 toc08

TEMPERATURE (°C)

CMRR (dB)

603510-15

20

40

60

80

100

120

140

0

-40 85
FREQUENCY (Hz)

CMRR (dB)

10k1k10010

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-100
1 100k

COMMON-MODE REJECTION RATIO

vs. FREQUENCY

MAX9914 toc09

Typical Operating Characteristics

(VDD= 3V, VSS= VCM= 0V, RL to VDD/ 2, TA= +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX9914 toc01

V

SUPPLY

(V)

I

CC

(µA)

4.84.13.32.6

5

10

15

20

25

30

35

40

45

50

0

1.8 5.5

TA = +25°C

TA = -40°C

TA = +85°C

TA = +25°C

TA = -40°C

TA = +85°C

DUAL

SINGLE

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX9914 toc02

TEMPERATURE (°C)

SHUTDOWN SUPPLY CURRENT (nA)

603510-15

-4

-2

0

2

4

6

8

10

12

-6

-40 85

INPUT OFFSET VOLTAGE

vs. INPUT COMMON-MODE VOLTAGE

MAX9914 toc03

VCM (V)

V

OS

(µV)

2.52.00.5 1.0 1.5

-750

-500

-250

0

250

500

750

1000

-1000
0 3.0

TA = +25°C

TA = -40°C

TA = +85°C