MAXIM MAX9614, MAX9616 User Manual

19-5302; Rev 0; 8/10

Low-Power Single/Dual, Rail-to-Rail Op Amps

General Description

The MAX9614/MAX9616 are low-power precision op amps that feature precision MOS inputs.

These devices are ideal for a large number of signal processing applications such as photodiode transimpedance amplifiers and filtering/amplification of a wide variety of signals in industrial equipment. The devices also feature excellent RF immunity, making them ideal for portable applications.

The MAX9614/MAX9616 are capable of operating from a 2.5V to 5.5V supply voltage over the -40NC to +125NC automotive temperature range.

Both singles and duals are available in tiny SC70 packages. The MAX9614 features an active-low shutdown pin.

Applications

Notebooks, Portable Media Players

Industrial and Medical Sensors

General Purpose Signal Processing

Features

S VCC = 2.5V to 5.5V (-40°C to +125°C)

Low 100µV (max) V

S 1µA Supply Current in Shutdown, 175µA Operating

Small SC70 Package

2.8MHz Bandwidth

Excellent RF Immunity

Ordering Information

PART

MAX9614AXT+T

MAX9616AXA+T

+Denotes lead(Pb)-free/RoHS-compliant package. T = Tape and reel.

TEMP

RANGE

-40NC to +125NC

PINPACKAGE

6 SC70 +ADL

8 SC70 +AAE

MARK

TOP

MAX9614/MAX9616

Typical Application Circuit

INPUT

USING THE MAX9614 OUTPUT AMPLIFIER AS AN ANTI-ALIASING FILTER (CORNER FREQUENCY = 1.3kHz) TO MAXIMIZE NYQUIST BANDWIDTH.

66.5kI

4.7nF

20kI

121kI

VCC/2

66.5kI

220pF

MAX9614

1.21kI

100nF

MAX11613

ADC

_______________________________________________________________ Maxim Integrated Products 1

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

Low-Power Single/Dual, Rail-to-Rail Op Amps

ABSOLUTE MAXIMUM RATINGS

IN+, IN-, SHDN, VCC to GND.................................. -0.3V to +6V

OUT to GND ................................................-0.3V to V

+ 0.3V

Short-Circuit (GND) Duration, OUT, OUTA, OUTB ................. 5s

Continuous Input Current (any pin) ................................. Q20mA

Thermal Limits (Note 1) Multilayer PCB Continuous Power Dissipation (T

= +70NC)

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

.......................................................................326.5NC/W

.......................................................................... 115NC/W

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer

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

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

(VCC = V

MAX9614/MAX9616

SHDN

= 3.3V, V

unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS

Input Voltage Range V

Input Offset Voltage V

Input Offset Voltage Drift V

Input Bias Current (Note 3) I

Input Offset Current (Note 3) I

Common-Mode Rejection Ratio CMRR

Open-Loop Gain A

Output Short-Circuit Current (Note 4)

Output Voltage Low V

IN+

= V

= VCM = GND, RL = 10kI to VCC/2, TA = -40NC to +125NC. Typical values are at TA = +25NC,

IN-

, V

IN+

Guaranteed by CMRR test -0.1

IN-

TA = +25NC

= -40NC to +125NC, after power-up

- TC 1 7.5

autocalibration

= -40NC to +125NC

TA = -40NC to +25°C

= +70NC

= +85NC

= +125NC

TA = -40NC to +25°C T

= +70NC

= +85NC

= +125NC

= -0.1V to VCC - 1.4V, TA = +25NC

= -0.1V to VCC - 1.4V, TA = -40NC to

+125NC

+0.4V P V

+0.4V P V To V

To GND 75

P VCC - 0.4V, RL = 10kI

OUT

P VCC - 0.4V, RL = 600I

OUT

RL = 10kI

= 600I

= 32I

8-Pin SC70 (derate 3.1mW/NC above +70NC) .............245mW

JA ..........................................................................

.......................................................................... 115NC/W

Operating Temperature Range ........................ -40NC to +125NC

Junction Temperature .....................................................+150NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+240NC

- 1.4

17 100

165

750

1 1.55

135

1.55 nA

0.5 7

4000

80 95

99 115 93 110

275

1 11

11 100

170

326NC/W

FV/NC

2 ______________________________________________________________________________________

Low-Power Single/Dual, Rail-to-Rail Op Amps

ELECTRICAL CHARACTERISTICS (continued)

(VCC = V unless otherwise noted.) (Note 2)

Output Voltage High V

AC CHARACTERISTICS

Input Voltage Noise Density e Input Voltage Noise Total noise Input Current Noise Density I Gain Bandwidth GBW 2.8 MHz Slew Rate SR 1.3 Capacitive Loading C Total Harmonic Distortion THD f = 10kHz, V

POWER-SUPPLY CHARACTERISTICS

Power-Supply Range V

Power-Supply Rejection Ratio PSRR

Quiescent Current I

Shutdown Supply Current Shutdown Input Low V Shutdown Input High V Output Impedance in Shutdown Turn-On Time from SHDN Power-Up Time t

= 3.3V, V

SHDN

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Note 2: All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design. Note 3: Guaranteed by design, not production tested. Note 4: Do not exceeed package thermal dissipation in the Absolute Maximum Ratings section.

IN+

= V

= VCM = GND, RL = 10kI to VCC/2, TA = -40NC to +125NC. Typical values are at TA = +25NC,

IN-

-11VCC -

100

85 106 83

VCC -

560

170 255

350

10 ms

LOAD

SHDN

OUT_SHDN

RL = 10kI

= 600I

= 32I

f = 10kHz 28

0.1Hz P f P 10Hz f = 10kHz 0.1

No sustained oscillation 200 pF

= 2V

OUT

Guaranteed by PSRR 2.5 5.5 V T

= +25NC

= -40NC to +125NC

TA = +25NC, per amplifier T

= -40NC to +125NC, per amplifier

MAX9614 only 1 MAX9614 only 0.5 V MAX9614 only 1.4 V MAX9614 only 10 MAX9614 only 20

, AV = 1V/V -85 dB

P-P

nV/√Hz

fA/√Hz

V/Fs

MAX9614/MAX9616

P-P

_______________________________________________________________________________________ 3

Low-Power Single/Dual, Rail-to-Rail Op Amps

SUPPLY CURRENT (µA)

MAX9614 toc01

Typical Operating Characteristics

(VCC = 3.3V, V

IN+

= V

= 0V, VCM = VCC/2, RL = 10kI to VCC/2, values are at TA = +25NC, unless otherwise noted.)

IN-

MAX9614/MAX9616

OFFSET VOLTAGE

vs. COMMON-MODE VOLTAGE

250

200

TA = +125°C

150

100

TA = +25°C

OFFSET VOLTAGE (µV)

-50

-100

-0.5 2.5 COMMON-MODE VOLTAGE (V)

TA = -40°C

TA = +85°C

2.01.51.00.50

OFFSET VOLTAGE vs. SUPPLY VOLTAGE

OFFSET VOLTAGE (µV)

1.5 5.5 SUPPLY VOLTAGE (V)

MAX9614 toc02

OCCURANCE (%)

5.04.54.03.53.02.52.0

OFFSET VOLTAGE HISTOGRAM

0 60

OFFSET VOLTAGE (µV)

INPUT BIAS CURRENT

SUPPLY CURRENT vs. SUPPLY VOLTAGE

300

TA = +125°C

250

200

TA = +25°C

150

100

SUPPLY CURRENT (µA)

2.5 6.0 SUPPLY VOLTAGE (V)

TA = +85°C

TA = -40°C

INPUT BIAS CURRENT vs.

COMMON-MODE VOLTAGE

1.0 TA = +25°C

0.8

0.6

0.4

0.2

-0.2

-0.4

INPUT BIAS CURRENT (pA)

-0.6

-0.8

-1.0 0 4.0

COMMON-MODE VOLTAGE (V)

MAX9614 toc04

5.55.04.54.03.53.0

MAX9614 toc07

3.53.02.0 2.51.0 1.50.5

SUPPLY CURRENT vs. TEMPERATURE

300

= NO LOAD

LOAD

250

200

150

100

TEMPERATURE (°C)

7550250-25-50 125

INPUT BIAS CURRENT

vs. TEMPERATURE

100

VCM = 0V

INPUT BIAS CURRENT (pA)

0.1

0.01

-50 125 TEMPERATURE (°C)

100

1007550250-25

10,000

1000

MAX9614 toc05

100

INPUT BIAS CURRENT (pA)

0.1

0.01

MAX9614 toc08

OUT

200mV/div

GND

2V/div

GND

vs. COMMON-MODE VOLTAGE

TA = +125°C

TA = +85°C

TA = -40°C

0 3.0

COMMON-MODE VOLTAGE (V)

POWER-UP TRANSIENT

4 ______________________________________________________________________________________

MAX9614 toc03

504010 20 30

MAX9614 toc06

TA = +25°C

TA = 0°C

2.52.01.51.00.5

MMAX9614-16 toc09

4ms/div

+ 8 hidden pages