Analog Devices Inc./Maxim Integrated 的 MAX40007 规格书

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General Description

The MAX40007 is a single operational amplifier that provides

a maximized ratio of gain bandwidth (GBW) to supply current

and is ideal for battery-powered applications such as portable

instrumentation, portable medical equipment, and wireless

handsets.

This CMOS op amp features an ultra-low supply current

of only 700nA (typ), ground-sensing inputs, and rail-to-

rail outputs; operating from a single 1.7V to 5.5V supply,

allowing the amplifier to be powered by the same 1.8V,

2.5V, or 3.3V nominal supply that powers the microcontroller.

The MAX40007 amplifier is unity-gain stable with a 20kHz

GBW product.

The ultra-low supply current, low operating voltage, and

rail-to-rail output capabilities make this operational amplifier

ideal for use in single lithium ion (Li+), two-cell NiCd or

alkaline battery systems.

The MAX40007 is available in a 6-pin SOT23 package

and an ultra-tiny 6-bump, 1.1mm x 0.76mm wafer-level

package (WLP) with a bump pitch of 0.35mm. The

amplifier is specified over the -40°C to 125°C operating

temperature range.

Applications

●Fitness Wearables

●Mobile Phones

●Notebook and Tablet Computers

●Portable Medical Devices

●Portable Instrumentation

Benefits and Features

●Ultra-Low-Power Preserves Battery Life

• 700nA Typical Supply Current

●Single 1.7V to 5.5V Supply Voltage Range

• Amplifier Can be Powered From the Same

1.8V/2.5V/3.3V/5V System Rails

●Tiny Packages Save Board Space

• 1.1mm x 0.76mm WLP-6 with 0.35mm Bump Pitch

• SOT23-6 Package

●Precision Specifications for Buffer/Filter/Gain Stages

• Low 300μV Input Offset Voltage

• Rail-to-Rail Output Voltage

• 20kHz BW

• Low 40pA Input Bias Current

• Unity-Gain Stable

●-40°C to 125°C Temperature Range

Ordering Information appears at end of data sheet.

19-8735; Rev 1; 1/18

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

EVALUATION KIT AVAILABLE

VDD to VSS .............................................................. -0.3V to +6V

IN+, IN- to VSS .................................... VSS -0.3V to VDD + 0.3V

IN+ to IN- ............................................................................ ±VDD

OUT to VSS .........................................VSS -0.3V to VDD + 0.3V

Continuous Current Into Any Input Pin .............................±10mA

Continuous Current Into Output Pin ................................. ±30mA

Output Short-Circuit Duration to VDD or VSS ........................ 10s

Continuous Power Dissipation (TA = +70°C)

6-Bump WLP (derate 10.19mW/°C at 70°C) ...............816mW

SOT23-6 (derate 4.30mW/°C at 70°C) ................... 347.80mW

Operating Temperature Range ......................... -40°C to +125°C

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

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

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

Soldering Temperature (reflow) ....................................... +260°C

WLP

Junction-to-Ambient Thermal Resistance (θJA) .....98.06°C/W

SOT23

Junction-to-Ambient Thermal Resistance (θJA) ........230°C/W

Junction-to-Case Thermal Resistance (θJC) ...............76°C/W

(Note 1)

VDD = +3V, VSS = 0V, VCM = 0.5V, VOUT = VDD/2, RL = 1MΩ to VDD/2, TA = +25°C, unless otherwise noted. (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range VDD Guaranteed by PSRR tests 1.7 5.5 V

Supply Current IDD At 25°C 0.7 0.9 µA

Input Offset Voltage VOS VSS - 0.1V < CMIR < VDD - 1.1V ±0.3 ±1.3 mV

Input Bias Current (Note 3) IB±40 ±100 pA

Input Offset Current

(Note 3) IOS ±5 ±50 pA

Input Capacitance Either input, over entire common mode range 1.5 pF

Input Common-Mode

Voltage Range VCM Guaranteed by the CMRR test VSS -

0.1V

VDD

-1.1 V

Common-Mode Rejection

Ratio CMRR DC, (VSS - 0.1) ≤ VCM ≤ (VDD - 1.1V) 70 92 dB

AC, 100mVPP 1kHz, with output at VDD/2 72

Power-Supply Rejection

Ratio PSRR DC, +1.7V ≤ VDD ≤ +5.5V 75 100 dB

AC, 100mVPP 1kHz, superimposed on VDD/2 75

Large-Signal Voltage Gain AVOL

RL = 1MΩ, VOUT = VSS + 25mV to

VDD - 25mV 75 110 dB

Output Voltage Swing

VOH Swing high specified as

VDD – VOUT

RL = 100kΩ 3.2 8

RL = 10kΩ 32 70

VOL Swing low specified as

VOUT - VSS

RL = 100kΩ 2.9 8

RL = 10kΩ 27 70

Gain-Bandwidth Product GBW AV = 1, CL = 20pF 15 kHz

Phase Margin φMCL = 20pF 56 °

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

www.maximintegrated.com Maxim Integrated

│

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer

board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.

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.

Package Thermal Characteristics

Electrical Characteristics

VDD = +3V, VSS = 0V, VCM = 0.5V, VOUT = VDD/2, RL = 1MΩ to VDD/2, TA = +25°C, unless otherwise noted. (Note 2)

Note 2: All devices are production tested at TA = +25°C. All temperature limits are guaranteed by design.

Note 3: Guaranteed by design and bench characterization.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Slew Rate SR VOUT = 1VP-P step, AV = 1V/V 12 V/ms

Settling Time 100mV step, 0.1% settling, AV = 1 74 µs

Input Voltage Noise enf = 1kHz 513 nV/√Hz

Input Current Noise inf = 1kHz 0.004 pA/√Hz

Output Short-Circuit

Current

Shorted to VSS (sourcing) 10 mA

Shorted to VDD (sinking) 10 mA

Power-On Time tON 0.13 ms

Stable Capacitive Load CLNo sustained oscillations 20 pF

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage

Range

VDD Guaranteed by PSRR

tests

1.7 5.5 V

Supply Current

TA = -40°C to 85°C 1.2 µA

TA = -40°C to 125°C 1.4

Input Offset

Voltage

VOS TA = -40°C to 125°C

±4.5

Input Offset

Voltage

Temperature

Coefficient

TCVOS 6.4 36.6 µV/°C

Input Bias

Current

(Note 3) I

B0.7 7 nA

Input

Common-Mode

Voltage

Range

VCM Guaranteed by the CMRR

test

VSS -

0.1

VDD

-1.1 V

Common-Mode Rejection

Ratio

CMRR DC, (VSS - 0.1) ≤ VCM ≤ (VDD -

1.1V)

70 dB

AC, 100mVP-P 1kHz, with output at VDD/2 63

Power-Supply

Rejection

Ratio

PSRR +1.7V ≤ VDD ≤ +5.5V, -40°C ≤ TA ≤

+125°

75 dB

AC, 100mVP-P 1kHz, superimposed on VDD 40

Large-Signal Voltage

Gain A

VOL VOUT = 50mV to VDD - 50mV, RL =

75 dB

Output Voltage

Swing

VOH

Swing high

specified

VDD - VOUT

100k

10k

VOL Swing low specified

VOUT - VSS

RL =

100k

RL =

10k

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

www.maximintegrated.com Maxim Integrated

│

Electrical Characteristics (continued)

VDD = +3V, VSS = 0V, VCM = 0.5V, VOUT = VDD/2, RL = 1MΩ to VDD/2, TA = +40°C to +125°C, unless otherwise noted. (Note 2)

Electrical Characteristics

\ TOTAL WC DSTORHCN vs FREQENCY

(VDD = +3V, VSS = 0V, VCM = 0V, RL = 100kΩ to VDD/2, TA = +25°C, unless otherwise noted.)

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

00.5 11.5 22.5 33.5 44.5 55.5

QUIESCENT SUPPLY CURRENT (μA)

SUPPLY VOLTAGE (V)

SUPPLY CURRENT v s. SUPPLY VOLTAGE

toc01

= 25°C

= 85°C

= 125°C

= -40°C

200

400

600

800

1000

1200

-40 -25 -10 520 35 50 65 80 95 110 125

QUIESCENT SUPPLY CURRENT (nA)

TEMPERATURE(°C)

SUPPLY CURRENT

vs . TEMPERATURE

toc02

= 3.3V

-1200

-1000

-800

-600

-400

-200

200

-40 -25 -10 520 35 50 65 80 95 110 125

INPUT BIAS CURRENT (pA)

TEMPERATURE (°C)

INPUT BIAS CURRENTS vs . TEMPERATURE

toc03

B+

= 3.0V I

B-

-10

-5

00.5 11.5 2

INPUT BIAS CURRENT (pA)

INPUT COMMON MODE VOLTAGE (V)

INPUT BIAS CURRENTS vs .

INPUT COMMON MODE VOLTAGE

toc04

B+

= 3.0V

B-

100

102

-40 -25 -10 520 35 50 65 80 95 110 125

DC CMRR (dB)

TEMPERATURE (°C)

DC CMRR vs . TEMPERATURE

toc05

= 3.0V

= 5.5V

-90

-80

-70

-60

-50

-40

-30

-20

-10

10 100 1000 10000 100000

THD + N (dB)

FREQUENCY(kHz)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs . FREQUENCY

toc06

OUT

= 1.5 V

Maxim Integrated

│

www.maximintegrated.com

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

Typical Operating Characteristics

\IcLTAKNaE [:8an vs. FREQEMN SMALLSIGNAL PULSE RESPONSE m = sum w. ‘ SUmV‘dw ouwur 5&me ..__: v.— 10%:de LARGE-SIGNAL PULSE RESPONSE (cL = 10ij W A»: wrv w W‘dw _ ____.‘ ouwur ‘ me {0mm SMALL-SIGNAL PULSE RESPONSE (cm: 1an m “ AV: NW N. 5DmV‘dw .— DUWUT ‘ Sam/M v .4 k,— mawaw ‘ SMALL-$IGNAL PULSE RESPDNsE {CL : zson) w. sum/saw — ouwm somw v .— U w. Wsdw ._ —— omvw l W/dw 1 my“ '

(VDD = +3V, VSS = 0V, VCM = 0V, RL = 100kΩ to VDD/2, TA = +25°C, unless otherwise noted.)

0.1 10 1000 100000

NOISE SPECTRAL DENSITY (µV/√Hz)

FREQUENCY(Hz)

VOLTAGE NOISE DENSITY vs . FREQUENCY

toc07

Maxim Integrated

│

www.maximintegrated.com

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

Typical Operating Characteristics (continued)

(VDD = +3V, VSS = 0V, VCM = 0V, RL = 100kΩ to VDD/2, TA = +25°C, unless otherwise noted.)

-20

-15

-10

-5

0.01 0.1 110 100 1000

GAIN (dB)

Frequency (kHz)

Thousands

SMALL SIGNAL GAIN

vs . FREQUENCY

toc13

VCL

= 1V/V

OUT

= 100mV

P-P

= 10pF, R

= 100KΩ

-20

-15

-10

-5

0.01 0.1 110 100 1000

GAIN (dB)

Frequency (kHz)

Thousands

SMALL SIGNAL GAIN

vs . FREQUENCY

toc14

VCL

= 1V/V

OUT

= 100mV

P-P

LOAD

= 10pF,R

= 1MΩ

-20

-15

-10

-5

0.01 0.1 110 100 1000

GAIN (dB)

Frequency (kHz)

Thousands

LARGE SIGNAL GAIN

vs . FREQUENCY

toc15

VCL

= 1V/V

OUT

= 1V

P-P

= 10pF, R

= 100KΩ

-20

-15

-10

-5

0.01 0.1 110 100 1000

GAIN (dB)

Frequency (kHz)

Thousands

LARGE SIGNAL GAIN

vs . FREQUENCY

toc16

VCL

= 1V/V

OUT

= 1V

P-P

= 10pF, R

= 1MΩ

Maxim Integrated

│

www.maximintegrated.com

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

Typical Operating Characteristics (continued)

BUMP (WLP) 6-SOT23 NAME FUNCTION

A1 3 IN+ Non-Inverting Amplifier Input.

A2 4 IN- Inverting Amplifier Input.

A3 1 OUT Amplifier Output.

B1 5 NC No Connection. Internally connected.

B2 6 VDD Positive Power Supply Input.

B3 2 VSS Negative Power Supply Input. Connect VSS to 0V in single-supply application.

MAX40007

SOT23-6

(TOP VIEW)

VSS

IN+

1OUT

3IN-

VDD

123

VDD VSS

IN+

IN-

OUT

MAX40007

6-WLP

(TOP VIEW)

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

www.maximintegrated.com Maxim Integrated

│

Pin Description

Pin Configurations

Detailed Description

The MAX40007 is an ultra-low-power op amp ideal for

battery-powered applications and features a maximized

ratio of GBW to supply current, low operating supply voltage,

and low input bias current. The MAX40007 is ideal for

general-purpose, low-current, low-voltage continuously

powered portable applications. The MAX40007 consumes

an ultra-low 700nA (typ) supply current and has a 0.3mV

(typ) offset voltage. This device is unity-gain stable with a

20kHz GBW product, driving capacitive loads up to 20pF.

Applications Information

Ground Sensing

The common-mode input range of the MAX40007 extends

down to VSS, and offers excellent common-mode rejection.

This op amp is guaranteed not to exhibit phase reversal

when either input is overdriven.

Power Supplies and Layout

The MAX40007 operates from a single +1.7V to +5.5V

power supply. Bypass the power supplies with a 0.1μF

ceramic capacitor placed close to VDD and VSS pins.

Adding a solid Ground plane improves performance

generally by decreasing the noise at the op amp’s inputs

However, in very high impedance circuits, it may be worth

removing the ground plane under the IN- pin to reduce the

stray capacitance and help avoid reducing the phase mar-

gin. To further decrease stray capacitance, minimize PCB

lengths and resistor leads, and place external components

close to the amplifier’s pins.

Input Differential Voltage Protection

The MAX40007’s inputs are protected from large differential

voltages by the network shown in Figure 1. This is done

to prevent gradual degradation of the input offset voltage.

In normal operation, the amplifier inputs are at almost

the same voltage at all times so these components are

transparent to normal operation. Using this amplifier as

a comparator, however, is not recommended—the inputs

will start to draw “bias current’ when the differential voltage

exceeds about 1V. While this will not damage the

amplifier in any way, it is not usually a desirable feature for

a comparator. Maxim does make comparators with similar

speed and power performance as these amplifiers, such

as the MAX40002/3/4/5.

Figure 1. Input Protection Scheme

IN-

IN+

12.5kΩ

OUT

MAX40007

IN-

IN+

OUT

12.5kΩ

MAX40007

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

www.maximintegrated.com Maxim Integrated

│

Functional (or Block) Diagram

Stability

This MAX40007 maintains stability in its minimum gain con-

figuration while driving capacitive loads up to 20pF or so.

Larger capacitive loading is achieved using the techniques

described in the Capacitive Load Stability section below.

Although this amplifier is primarily designed for low-

frequency applications, good layout can still be extremely

important, especially if very high-value resistors are being

used—as is likely in ultra-low-power circuitry. However,

some stray capacitance may be unavoidable; and it may

be necessary to add a 2pF to 10pF capacitor across the

feedback resistor, as shown in

Figure 2

. Select the smallest

capacitor value that ensures stability so that BW and

settling time are not significantly impacted.

Capacitive Load Stability

Driving large capacitive loads can cause instability in

amplifiers. The MAX40007 is stable with capacitive loads

up to 20pF. Stability with higher capacitive loads can be

achieved by adding an isolation resistor in series with the

op-amp output as shown in Figure 2 below. This resistor

improves the circuit’s phase margin by isolating the load

capacitor from the amplifier’s inverting input. The graph in

the Typical Operating Characteristics gives the stable operation

region for capacitive load versus isolation resistors.

Figure 2. Compensation for Feedback Node Capacitance Figure 3. RISO Improving Capacitive Load Drive Capability of

Op Amp

+Denotes a lead(Pb)-free/RoHS-compliant package.

PART TEMP

RANGE

PACKAGE

TOP

MARK

MAX40007ANT+ -40°C to +125°C 6-WLP +2

MAX40007AUT+ -40°C to +125°C 6-SOT23 +ACUV

PACKAGE

TYPE

PACKAGE

CODE

OUTLINE

NO.

LAND

PATTERN NO.

6-WLP N60D1+1 21-100086

Refer to

Application

Note 1891

6-SOT23 U6+1 21-0058 90-0175

MAX40007

IN+

2pF TO 10pF

OUT

IN-

MAX40007

IN+

IN-

OUT

ISO

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

www.maximintegrated.com Maxim Integrated

│

Package Information

For the latest package outline information and land patterns

(footprints), go to www.maximintegrated.com/packages. Note

that a “+”, “#”, or “-” in the package code indicates RoHS status

only. Package drawings may show a different suffix character, but

the drawing pertains to the package regardless of RoHS status.

Chip Information

PROCESS: BiCMOS

Ordering Information

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 12/16 Initial release —

1 1/18 Updated Ordering Informaiton table 9

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

│

MAX40007 nanoPower Op Amp in Ultra-Tiny

WLP and SOT23 Packages

Revision History

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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