Datasheet

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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 instru-

mentation, 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 avail-

able 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

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

19-3407; Rev 3; 11/14

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

T = Tape and reel.

PART TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX9914EXK+T -40°C to +85°C 5 SC70 AGB

MAX9914EXK-T -40°C to +85°C 5 SC70 AGB

MAX9915EXT+T -40°C to +85°C 6 SC70 ACB

MAX9915EXT-T -40°C to +85°C 6 SC70 ACB

MAX9916EKA+T -40°C to +85°C 8 SOT23 AEJZ

MAX9916EKA-T -40°C to +85°C 8 SOT23 AEJZ

MAX9917EUB -40°C to +85°C 10 µMAX —

MAX9917EUB+ -40°C to +85°C 10 µMAX —

PART

AMPLIFIERS

PER

PACKAGE

SHUTDOWN

MODE

PACKAGE

MAX9914EXK+T 1 No 5 SC70

MAX9915EXT+T 1 Yes 6 SC70

MAX9916EKA+T 2 No 8 SOT23

MAX9917EUB+ 2 Yes 10 µMAX

47kΩ

10kΩ

*OPTIONAL INPUT RESISTOR R

IS FOR GAIN ADJUSTMENT

MICROPOWER, TWO-OP-AMP INSTRUMENTATION AMPLIFIER

10kΩ

47kΩ

GAIN

FOR R1

R4 AND R2

GAIN

(R1

R4)

(R2

R3)

MAX9916

IN-

INB+

INA+

OUTA

OUT

INA-

OUTB

INB-

IN+

MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail

I/O Op Amps with Shutdown

Typical Operating Circuit

Ordering Information

Selector Guide

Summary of content (12 pages)

PAGE 1
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown 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.
PAGE 2
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Absolute Maximum Ratings Power-Supply Voltage (VDD to 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 VDD or VSS.............Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SC70 (derate 3.1mW/°C above +70°C)..............247mW 6-Pin SC70 (derate 3.
PAGE 3
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Electrical Characteristics (continued) (VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN_ = VDD, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL SHDN_ Logic Low VIL SHDN_ Logic High VIH SHDN_ Input Bias Current Output Leakage in Shutdown CONDITIONS TYP MAX 0.4 VDD = 3.6V to 5.5V, MAX9915/MAX9917 0.8 VDD = 1.8V to 3.6V, MAX9915/MAX9917 1.4 VDD = 3.6V to 5.
PAGE 4
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Electrical Characteristics (continued) (VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN_ = VDD, TA = -40°C to +85°C, unless otherwise noted.
PAGE 5
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Typical Operating Characteristics (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) DUAL 40 TA = +25°C TA = +85°C 20 SINGLE 15 10 5 3.3 4.1 4.8 0 -250 0 -500 -2 -750 -4 -15 -40 10 35 60 85 -1000 2.0 2.5 3.0 INPUT BIAS CURRENT vs.
PAGE 6
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) 1.5 1.0 0.5 0 -0.5 100 RL = 5kΩ RL = 100kΩ 10 RL TO VSS VOH = VDD - VOUT -1.0 1.8 3.8 4.
PAGE 7
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) 3000 MAX9914 toc19 POWER-UP SETTLING TIME MAX9914 toc21 AV = 1V/V FOR AV = 10V/V NO RISO NEEDED 2500 2000 1000 1500 1000 OUTPUT 500mV/div 500 10 100 1k 10k 0 100k 10 100 FREQUENCY (Hz) 1000 IN+ = VDD / 2 AV = 1V/V 1µs/div 10,000 CLOAD (pF) SMALL-SIGNAL GAIN vs.
PAGE 8
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) LARGE-SIGNAL PULSE RESPONSE (CLOAD = 15pF) LARGE-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9914 toc27 MAX9914 toc28 AV = 10V/V AV = 1V/V IN+ 1V/div IN+ 100mV/div OUTPUT 1V/div OUTPUT 1V/div 5µs/div PERCENT OVERSHOOT vs. CAPACITIVE LOAD OUTPUT WAVEFORM WITH RISO (CLOAD = 47pF, RISO = 2.
PAGE 9
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Pin Description PIN NAME FUNCTION MAX9914 MAX9915 MAX9916 MAX9917 1 1 — — IN+ Noninverting Amplifier Input 2 2 4 4 VSS Negative Supply Voltage 3 3 — — IN- Inverting Amplifier Input 4 4 — — OUT Amplifier Output 5 6 8 10 VDD Positive Supply Voltage — 5 — — SHDN Shutdown — — 1 1 OUTA Amplifier Output Channel A — — 2 2 INA- Inverting Amplifier Input Channel A — — 3 3 INA+ Noninverting
PAGE 10
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Power-Supply Considerations RAIL-TO-RAIL OUTPUT VOLTAGE RANGE The MAX9914–MAX9917 are optimized for single 1.8V to 5.5V supply operation. A high amplifier power-supply rejection ratio of 85dB (typ) allows the devices to be powered directly from a battery, simplifying design and extending battery life. 3V IN_ 1V/div 0V Power-Up Settling Time The MAX9914–MAX9917 typically require 2μs after power-up.
PAGE 11
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Pin Configurations TOP VIEW MAX9914 IN+ + 1 MAX9915 5 VDD VSS 2 IN- 3 4 OUT IN+ 1 + 6 VDD VSS 2 5 SHDN IN- 3 4 OUT SC70 SC70 MAX9916 OUTA 1 + MAX9917 8 VDD INA- 2 7 OUTB INA+ 3 6 INB- VSS 4 5 INB+ PROCESS: BiCMOS www.maximintegrated.
PAGE 12
MAX9914–MAX9917 1MHz, 20μA, Rail-to-Rail I/O Op Amps with Shutdown Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 11/04 Initial release 1 10/05 Removed future product asterisks from MAX9916/MAX9917, edited VOL/ VOH specifications in the EC table, removed MAX9916 8-pin µMAX package.