Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Audio SOIC 8

THD+NOISEvsFREQUENCY

100010 100 10k 100k

Frequency(Hz)

THD+Noise(%)

Gain=+1

R =348W

O RMS

=3V

DifferentialI/O

R W

=600

R W

=2k

0.001

0.0001

0.00001

+15V

Digital

Output

-15V

OCM

COM

IN+

IN-

IN+

TypicalADCCircuit

OPA1632

www.ti.com

SBOS286B –DECEMBER 2003–REVISED JANUARY 2010

High-Performance, Fully-Differential

AUDIO OPERATIONAL AMPLIFIER

Check for Samples: OPA1632

FEATURES

DESCRIPTION

• SUPERIOR SOUND QUALITY

The OPA1632 is a fully-differential amplifier designed

for driving high-performance audio analog-to-digital

• ULTRA LOW DISTORTION: 0.000022%

converters (ADCs). It provides the highest audio

• LOW NOISE: 1.3nV/√Hz

quality, with very low noise and output drive

• HIGH SPEED:

characteristics optimized for this application. The

– Slew Rate: 50V/ms OPA1632’s excellent gain bandwidth of 180MHz and

very fast slew rate of 50V/ms produce exceptionally

– Gain Bandwidth: 180MHz

low distortion. Very low input noise of 1.3nV/√Hz

• FULLY DIFFERENTIAL ARCHITECTURE:

further ensures maximum signal-to-noise ratio and

– Balanced Input and Output Converts

dynamic range.

Single-Ended Input to Balanced Differential

The flexibility of the fully differential architecture

Output

allows for easy implementation of a single-ended to

• WIDE SUPPLY RANGE: ±2.5V to ±16V

fully-differential output conversion. Differential output

reduces even-order harmonics and minimizes

• SHUTDOWN TO CONSERVE POWER

common-mode noise interference. The OPA1632

provides excellent performance when used to drive

APPLICATIONS

high-performance audio ADCs such as the PCM1804.

• AUDIO ADC DRIVER

A shutdown feature also enhances the flexibility of

• BALANCED LINE DRIVER

this amplifier.

• BALANCED RECEIVER

The OPA1632 is available in an SO-8 package and a

• ACTIVE FILTER

thermally-enhanced MSOP-8 PowerPAD™ package.

• PREAMPLIFIER

Summary of content (20 pages)

PAGE 1
OPA1632 www.ti.com SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 High-Performance, Fully-Differential AUDIO OPERATIONAL AMPLIFIER Check for Samples: OPA1632 FEATURES DESCRIPTION • • • • The OPA1632 is a fully-differential amplifier designed for driving high-performance audio analog-to-digital converters (ADCs). It provides the highest audio quality, with very low noise and output drive characteristics optimized for this application.
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OPA1632 SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 www.ti.com 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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OPA1632 www.ti.com SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 ELECTRICAL CHARACTERISTICS: VS = ±15V At VS = ±15V; RF = 390Ω, RL = 800Ω, and G = +1, unless otherwise noted. OPA1632 PARAMETER CONDITIONS MIN TYP MAX ±0.5 ±3 UNIT OFFSET VOLTAGE Input Offset Voltage vs Temperature vs Power Supply, dc dVOS/dT PSRR 316 mV ±5 mV°C 13 mV/V INPUT BIAS CURRENT Input Bias Current Input Offset Current IB 2 6 mA IOS ±100 ±500 nA NOISE Input Voltage Noise f = 10 kHz 1.
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OPA1632 SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±15V (continued) At VS = ±15V; RF = 390Ω, RL = 800Ω, and G = +1, unless otherwise noted. OPA1632 PARAMETER CONDITIONS MIN TYP MAX UNIT POWER-DOWN (1) Enable Voltage Threshold (V−) + 2 Disable Voltage Threshold (V−) + 0.8 V VENABLE = −15V 0.
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OPA1632 www.ti.com SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 TYPICAL CHARACTERISTICS At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. THD + NOISE vs FREQUENCY THD + NOISE vs FREQUENCY 0.001 Gain = +1 RF = 348W VO = 3VRMS Differential I/O THD + Noise (%) THD + Noise (%) 0.001 0.0001 RL = 600W Gain = +1 RF = 348W VO = 3VRMS Single-Ended Input Differential Output 0.0001 RL = 600W RL = 2kW RL = 2kW 0.00001 0.00001 10 100 1k 10k 100k 10 100 1k Frequency (Hz) Figure 1.
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OPA1632 SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. VOLTAGE NOISE vs FREQUENCY CURRENT NOISE vs FREQUENCY 10 In (pA/ÖHz) Vn (nV/ÖHz) 10 1 0.1 1 10 100 1k 10k 100k 10 100 Frequency (Hz) 10 Figure 7. Figure 8.
PAGE 7
OPA1632 www.ti.com SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 APPLICATION INFORMATION Figure 11 shows the OPA1632 used as a differential-output driver for the PCM1804 high-performance audio ADC. The VCOM reference voltage output on the PCM1804 ADC provides the proper input common-mode reference voltage (2.5V). This VCOM voltage is buffered with op amp A2 and drives the output common-mode voltage pin of the OPA1632. This biases the average output voltage of the OPA1632 to 2.5V.
PAGE 8
OPA1632 SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 www.ti.com It is important to maintain accurate resistor matching on R1/R2 and R3/R4 to achieve good differential signal balance. Use 1% resistors for highest performance. When connected for single-ended inputs (inverting input grounded, as shown in Figure 11), the source impedance must be low. Differential input sources must have well-balanced or low source impedance.
PAGE 9
OPA1632 www.ti.com SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 PowerPAD DESIGN CONSIDERATIONS The OPA1632 is available in a thermally-enhanced PowerPAD family of packages. These packages are constructed using a downset leadframe upon which the die is mounted (see Figure 13[a] and Figure 13[b]). This arrangement results in the lead frame being exposed as a thermal pad on the underside of the package (see Figure 13[c]).
PAGE 10
OPA1632 SBOS286B – DECEMBER 2003 – REVISED JANUARY 2010 www.ti.com The OPA1632 does not have thermal shutdown protection. Take care to assure that the maximum junction temperature is not exceeded. Excessive junction temperature can degrade performance or cause permanent damage. For best performance and reliability, assure that the junction temperature does not exceed +125°C. The thermal characteristics of the device are dictated by the package and the circuit board.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.com (4) 18-Oct-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal 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 OPA1632DGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA1632DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA1632DGNR MSOP-PowerPAD DGN 8 2500 358.0 335.0 35.0 OPA1632DR SOIC D 8 2500 367.0 367.0 35.
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