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ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - voltage reference Series Adjustable SC 70 3

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FEATURES

DESCRIPTION

APPLICATIONS

1IN

2OUT

3 GND

REF3312

REF3318

REF3320

REF3325

REF3330

REF3333

SOT23-3,SC70-3

REF3312

, ,

REF3318

REF3320

REF3325

REF3330

REF3333

SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007

3.9 μ A, SC70-3, 30ppm/ ° C Drift

VOLTAGE REFERENCE

• MICROSIZE PACKAGES: SC70-3, SOT23-3

• LOW SUPPLY CURRENT: 3.9 μ A (typ)

The REF33xx is a low-power, precision, low-dropout

voltage reference family available in the tiny SC70-3

• HIGH OUTPUT CURRENT: ± 5mA

and SOT23-3 packages. Small size and low power

• LOW TEMPERATURE DRIFT: 30ppm/ ° C (max)

consumption (5 μ A max) make the REF33xx ideal for

• HIGH INITIAL ACCURACY: ± 0.15% (max)

a wide variety of portable and battery-powered

applications.

The REF33xx can be operated at a supply voltage

• PORTABLE EQUIPMENT

180mV above the specified output voltage under

• DATA ACQUISITION SYSTEMS

normal load conditions, with the exception of the

REF3312, which has a minimum supply voltage of

• MEDICAL EQUIPMENT

1.8V. All models are specified for the wide

• TEST EQUIPMENT

temperature range, – 40 ° C to +125 ° C.

REF33xx PRODUCT FAMILY

PRODUCT DESCRIPTION

REF3312 1.25V

REF3318 1.8V

REF3320 2.048V

REF3325 2.5V

REF3330 3.0V

REF3333 3.3V

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2 All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (21 pages)

PAGE 1
REF3312, REF3318 REF3320, REF3325 REF3330, REF3333 SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 3.9μA, SC70-3, 30ppm/°C Drift VOLTAGE REFERENCE FEATURES 1 • • • • • 2 MICROSIZE PACKAGES: SC70-3, SOT23-3 LOW SUPPLY CURRENT: 3.9μA (typ) HIGH OUTPUT CURRENT: ±5mA LOW TEMPERATURE DRIFT: 30ppm/°C (max) HIGH INITIAL ACCURACY: ±0.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 ELECTRICAL CHARACTERISTICS: VIN = +5V Boldface limits apply over the specified temperature range, –40°C to +125°C. At TA = +25°C and ILOAD = 0mA, unless otherwise noted. REF33xx PARAMETER CONDITIONS MIN TYP MAX UNITS +0.15 % REF3312 (1.25V) OUTPUT VOLTAGE Initial Accuracy VOUT VIN = 5V 1.25 –0.15 V NOISE Output Voltage Noise f = 0.1Hz to 10Hz μVPP 35 REF3318 (1.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 ELECTRICAL CHARACTERISTICS: VIN = +5V (continued) Boldface limits apply over the specified temperature range, –40°C to +125°C. At TA = +25°C and ILOAD = 0mA, unless otherwise noted.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 TYPICAL CHARACTERISTICS At TA = +25°C and VIN = +5V. REF3325 is used for typical characteristic measurements, unless otherwise noted. 0 1 3 4 5 6 8 9 10 11 13 14 15 16 18 19 20 21 23 24 25 26 0 1 3 4 5 6 8 9 10 11 13 14 15 16 18 19 20 21 23 24 25 26 Unit (%) TEMPERATURE DRIFT (–40°C to +125°C) Unit (%) TEMPERATURE DRIFT (0°C to +70°C) Drift (ppm/°C) Drift (ppm/°C) Figure 1. Figure 2.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 TYPICAL CHARACTERISTICS (continued) At TA = +25°C and VIN = +5V. REF3325 is used for typical characteristic measurements, unless otherwise noted. PSRR vs FREQUENCY 90 OUTPUT vs SUPPLY 2.503 ILOAD = 1mA CLOAD = 1mF 80 ILOAD = 0mA 2.502 2.501 +125°C 60 Output (V) PSRR (dB) 70 50 40 30 2.500 2.499 +25°C 2.498 -40°C 20 2.497 10 2.496 2.495 0 10 100 1k 10k 100k 2.5 3.0 3.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 TYPICAL CHARACTERISTICS (continued) At TA = +25°C and VIN = +5V. REF3325 is used for typical characteristic measurements, unless otherwise noted. LOAD TRANSIENT (CL = 1μF, ±5mA output pulse) +5mA VIN -5mA -5mA ILOAD VOUT 50mV/div 10mV/div 500mV/div LINE TRANSIENT (CLOAD = 10μF, IOUT = 0mA) VOUT 200ms/div Figure 13. Figure 14.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 APPLICATIONS INFORMATION The REF33xx is a family of low-power, precision bandgap voltage references that are specifically designed for excellent initial voltage accuracy with a high output current. Figure 17 shows a simplified block diagram of the REF33xx. VIN REF33xx VOUT Bandgap 1.
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REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 POWER DISSIPATION APPLICATION CIRCUITS The REF33xx family is specified to deliver current loads of ±5mA over the specified input voltage range. The temperature of the device increases according to Equation 2: TJ = TA + PD ´ qJA (2) Figure 20 shows a simple application circuit where low-power components are used to create a signal chain.
PAGE 10
REF3312,, REF3318 REF3320, REF3325 REF3330, REF3333 www.ti.com SBOS392A – AUGUST 2007 – REVISED SEPTEMBER 2007 DVCC +3.3V +3.0V REF3330 C4 10mF C5 1mF AVCC +3.0V +3.0V +3.3V AVCC DVCC 20kW 100kW R1 66.5W A0+ INA159 C1 1.5nF 40kW 100kW 16-Bit ADC 0.62V VIN +2.5V A0- 40kW MSP430x20x3RSA +3.0V 1.25V REF3312 C2 1mF VREF R2 R3 AVSS DVSS C3 1m F Figure 21.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Sep-2010 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2010 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ REF3312AIDBZR SOT-23 3000 179.0 8.4 DBZ 3 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.15 2.95 1.22 4.0 8.0 Q3 REF3312AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF3312AIDCKR SC70 DCK 3 3000 179.0 8.4 2.4 2.4 1.19 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2010 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant REF3330AIDCKR SC70 DCK 3 3000 179.0 8.4 2.4 2.4 1.19 4.0 8.0 Q3 REF3330AIDCKT SC70 DCK 3 250 179.0 8.4 2.4 2.4 1.19 4.0 8.0 Q3 REF3333AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF3333AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2010 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) REF3320AIDCKT SC70 DCK 3 250 195.0 200.0 45.0 REF3325AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF3325AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 REF3325AIDCKR SC70 DCK 3 3000 195.0 200.0 45.0 REF3325AIDCKT SC70 DCK 3 250 195.0 200.0 45.0 REF3330AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.
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