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General Description

The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329

family of operational amplifiers combines wide bandwidth

and excellent DC accuracy with Rail-to-Rail

operation at

the inputs and outputs. These devices consume only

650µA per amplifier and operate from either a single sup-

ply (2.4V to 6.5V) or dual supplies (±1.2V to ±3.25V). These

unity-gain-stable amplifiers are capable of driving 250Ω

loads and have a 5MHz gain-bandwidth product. The

MAX4323 and MAX4327 feature a low-power shutdown

mode that reduces supply current to 25µA and places the

outputs in a high-impedance state.

With their rail-to-rail input common-mode range and

output swing, these amplifiers are ideal for low-voltage,

single-supply operation. In addition, low offset voltage

and high speed make them the ideal signal-condition-

ing stages for precision, low-voltage data-acquisition

systems.

The MAX4323 is offered in a small 6-bump chip-scale

package (UCSP™). The MAX4322/MAX4323 are also

available in space-saving SOT23 packages.

________________________Applications

Battery-Powered Data-Acquisition

Instruments Systems

RSSI Systems Signal Conditioning

PA Biasing Portable Equipment

Low-Power, Low-Voltage

Applications

____________________________Features

♦ 6-Bump UCSP Package (MAX4323)

♦ 2.4V to 6.5V Single-Supply Operation

♦ Rail-to-Rail Input Common-Mode Voltage Range

♦ Rail-to-Rail Output Voltage Swing

♦ 5MHz Gain-Bandwidth Product

♦ 650µA Quiescent Current per Amplifier

♦ 700µV Offset Voltage

♦ No Phase Reversal for Overdriven Inputs

♦ Drive 250Ω Loads

♦ 25µA Shutdown Mode (MAX4323/MAX4327)

♦ Unity-Gain Stable for Capacitive Loads

Up to 500pF

MAX4322/MAX4323/MAX4326/MAX4327/MAX4329

Single/Dual/Quad, Low-Cost, UCSP/SOT23,

Low-Power, Rail-to-Rail I/O Op Amps

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

19-1380; Rev 3; 10/02

Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

UCSP is a trademark of Maxim Integrated Products, Inc.

Selector Guide

TOP VIEW

(BUMPS ON BOTTOM)

UCSP

MAX4323

OUT

IN+

IN-

SHDN

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.

PART

TEMP

RANGE

PIN/BUMP-

PACKAGE

TOP

MARK

MAX4322EUK-T -40

C to +85

C 5 SOT23-5 ACGE

MAX4322EUA -40

C to +85

C 8 µMAX —

MAX4322ESA -40

C to +85

C 8 SO —

Ordering Information continued at end of data sheet.

Pin Configurations continued at end of data sheet.

10 µMAX, 14 SO

25MAX4327 Yes

8 µMAX/SO25MAX4326 —

—

Yes

—

SHUTDOWN

14 SO

6 SOT23/UCSP,

8 µMAX/SO

5 SOT23,

8 µMAX/SO

PIN/BUMP-

PACKAGE

45MAX4329

15MAX4323

PART

15MAX4322

NO. OF

AMPS

(MHz)

Summary of content (17 pages)

PAGE 1
9-1380; Rev 3; 10/02 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps ____________________________Features ♦ 6-Bump UCSP Package (MAX4323) With their rail-to-rail input common-mode range and output swing, these amplifiers are ideal for low-voltage, single-supply operation. In addition, low offset voltage and high speed make them the ideal signal-conditioning stages for precision, low-voltage data-acquisition systems.
PAGE 2
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC - VEE) ...................................................7.5V All Other Pins ...................................(VCC + 0.3V) to (VEE - 0.3V) Output Short-Circuit Duration.....................................Continuous (Short to Either Supply) Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C)............
PAGE 3
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps (VCC = 5V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.) PARAMETER SYMBOL Operating Supply Voltage Range VCC Inferred from PSRR test Supply Current per Amplifier ICC VCM = VOUT = VCC/2 I SHDN V SHDN ≤ 0.8V, MAX4323/MAX4327 Shutdown Supply Current per Amplifier CONDITIONS MIN TYP 2.4 VCC = 2.4V 650 VCC = 5V 725 VCC = 2.4V 25 VCC = 5V 40 MAX UNITS 6.
PAGE 4
MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps AC ELECTRICAL CHARACTERISTICS (VCC = 5V, VEE = 0V, VCM = VOUT = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.) PARAMETER Gain-Bandwidth Product SYMBOL CONDITIONS MIN TYP MAX UNITS GBWP 5 MHz Phase Margin φM 64 Degrees Gain Margin GM 12 dB Total Harmonic Distortion THD Slew Rate SR Settling Time to 0.
PAGE 5
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps GAIN AND PHASE vs. FREQUENCY (WITH CLOAD) 60 180 144 144 72 20 36 0 -36 PHASE GAIN 72 20 36 0 0 -36 PHASE -40 100 1k AV = +1000 RL = ∞ CL = 500pF -20 -108 AV = +1000 NO LOAD -144 10k 100k 1M -40 100 -180 100M 10M 1k MAX4326/MAX4327/MAX4329 CHANNEL SEPARATION vs.
PAGE 6
_____________________________Typical Operating Characteristics (continued) (VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.) COMMON-MODE REJECTION RATIO vs. TEMPERATURE VCC = 2.7V, VCM = VCC 110 10 0 -10 -20 VCM = 0 TO 5.0V 105 100 95 VCC = 2.7V, VCM = VEE -30 250 RL TO VCC 200 VCM = -0.2V TO 5.2V 80 5 20 35 50 65 80 95 VCC = 2.
PAGE 7
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps (VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25°C, unless otherwise noted.) VCC = 2.7V, RL TO VEE 95 VCC = 2.7V, RL TO VCC 90 85 VOUT(P-P) = VCC - 600mV RL = 100kΩ 80 -40 -25 -10 5 20 35 50 65 80 1.4 5 20 35 50 65 80 SMALL-SIGNAL TRANSIENT RESPONSE (NONINVERTING) MAX4322/26/29-22 TOTAL HARMONIC DISTORTION PLUS NOISE vs. PEAK-TO-PEAK SIGNAL AMPLITUDE 95 10 VOLTAGE (50mV/div) IN 4.2 4.4 4.6 4.
PAGE 8
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Pin Description PIN MAX4322 MAX4323 SOT23 SO/µMAX 8 SOT23 SO/µMAX NAME MAX4327 MAX4326 UCSP FUNCTION MAX4329 µMAX SO 1 6 1 6 A2 — — — — OUT Output 2 4 2 4 A1 4 4 4 11 VEE Negative Supply. Ground for singlesupply operation.
PAGE 9
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps Rail-to-Rail Input Stage Devices in the MAX4322/MAX4323/MAX4326/MAX4327/ MAX4329 family of high-speed amplifiers have rail-torail input and output stages designed for low-voltage, single-supply operation. The input stage consists of separate NPN and PNP differential stages, which combine to provide an input common-mode range extending to the supply rails.
PAGE 10
IBIAS = VDIFF - 1.8V 2kΩ Rail-to-Rail Output Stage The minimum output voltage is within millivolts of ground for single-supply operation where the load is referenced to ground (VEE). Figure 3 shows the input voltage range and output voltage swing of a MAX4322 connected as a voltage follower. With a 3V supply and the load tied to ground, the output swings from 0 to 2.90V. The maximum output voltage swing depends on the load, but is within 350mV of a 5V supply, even with the maximum load (500Ω to ground).
PAGE 11
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps MAX4322/MAX4323 MAX4326/MAX4327 MAX4329 0 TO 2.7V STEP FOR POWER-UP TEST 2kΩ RS VOUT CL MAX4322/MAX4323 MAX4326/MAX4327 MAX4329 SUPPLY-CURRENT 10Ω MONITORING POINT 2kΩ 10kΩ Figure 7. Capacitive-Load-Driving Circuit Figure 8. Power-Up Test Circuit Figures 9 and 10 show the output voltage and supply current on power-up of the test circuit in Figure 8. 0.33mm (13mil). Round or square pads are permissible.
PAGE 12
VCC VCC 1V/div VOLTAGE (1V/div) MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps OUT ICC 500µA/div 5µs/div 5µs/div Figure 9. Power-Up Output Voltage Figure 10. Power-Up Supply Current VCC = 2.7V RL = 10kΩ VCC = 2.7V SHDN 1V/div SHDN 1V/div OUT 0.5V/div ICC 500µA/div 2µs/div Figure 11. Shutdown Output Voltage 12 2µs/div Figure 12.
PAGE 13
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps TOP VIEW OUT 1 VEE 2 5 VCC IN1- 2 MAX4322 IN+ 3 N.C. 1 IN- 4 IN1- 2 IN1+ 3 7 5 SO/µMAX VCC 6 OUT VEE 4 5 N.C. VCC VEE 2 OUT2 IN2- 14 VCC IN1- 2 13 OUT2 IN2+ VEE 4 MAX4327 N.C. 5 MAX4323 IN+ 3 6 VCC 5 SHDN 4 IN- N.C. 1 8 SHDN 7 VCC IN1+ 3 6 OUT VEE 4 5 N.C. IN1- 2 OUT1 1 IN1- 12 IN2- IN1+ 3 11 IN2+ VEE 4 10 N.C. SHDN1 6 9 SHDN2 N.C. 7 8 N.C.
PAGE 14
Typical Operating Circuit MAX4322 TRANSISTOR COUNT: 170 MAX4323 TRANSISTOR COUNT: 170 MAX4326 TRANSISTOR COUNT: 340 MAX4327 TRANSISTOR COUNT: 340 MAX4329 TRANSISTOR COUNT: 680 PROCESS: Bipolar SUBSTRATE CONNECTED TO VEE +5V MAX187 3 6 SERIAL INTERFACE 8 7 SHDN VDD DOUT AIN SCLK VREF CS GND Chip Information 1 2 MAX4322 4 5 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.
PAGE 15
Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps 6L, UCSP.EPS SOT5L.EPS ______________________________________________________________________________________ 15 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.
PAGE 16
Package Information (continued) 6LSOT.EPS (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 4X S 8 E ÿ 0.50±0.1 8 INCHES DIM A A1 A2 b H c D e E H 0.6±0.1 1 L 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.010 0.014 0.005 0.007 0.116 0.120 0.0256 BSC 0.116 0.120 0.188 0.198 0.016 0.026 6∞ 0∞ 0.0207 BSC 8LUMAXD.
PAGE 17
Single/Dual/Quad, Low-Cost, SOT23, Low-Power, Rail-to-Rail I/O Op Amps N E H INCHES MILLIMETERS MAX MIN 0.053 0.069 0.004 0.010 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.