Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - In-amp, Op-amp InAmp SOIC 14

Low-Noise, Low-Distortion

INSTRUMENTATION AMPLIFIER

APPLICATIONS

● PROFESSIONAL MICROPHONE PREAMPS

● MOVING-COIL TRANSDUCER AMPLIFIERS

● DIFFERENTIAL RECEIVERS

● BRIDGE TRANSDUCER AMPLIFIERS

FEATURES

● LOW NOISE: 1nV/√Hz at 1kHz

● LOW THD+N: 0.002% at 1kHz, G = 100

● WIDE BANDWIDTH: 800kHz at G = 100

● WIDE SUPPLY RANGE: ±4.5V to ±18V

● HIGH CMR: > 100dB

● GAIN SET WITH EXTERNAL RESISTOR

● SO-14 SURFACE-MOUNT PACKAGE

DESCRIPTION

The INA163 is a very low-noise, low-distortion, mon-

olithic instrumentation amplifier. Its current-feedback

circuitry achieves very wide bandwidth and excellent

dynamic response over a wide range of gain. It is ideal

for low-level audio signals such as balanced low-

impedance microphones. Many industrial, instrumen-

tation, and medical applications also benefit from its

low noise and wide bandwidth.

Unique distortion cancellation circuitry reduces distor-

tion to extremely low levels, even in high gain. The

INA163 provides near-theoretical noise performance

for 200Ω source impedance. Its differential input, low

noise, and low distortion provide superior performance

in professional microphone amplifier applications.

The INA163’s wide supply voltage, excellent output

voltage swing, and high output current drive allow its

use in high-level audio stages as well.

The INA163 is available in a space-saving SO-14

surface-mount package, specified for operation over

the –40°C to +85°C temperature range.

6kΩ 6kΩ

Sense

14 11 6

6kΩ 6kΩ

IN−

IN+

V+ V−

INA163

G = 1 +

6000

3kΩ

Ref

INA163

SBOS177D – NOVEMBER 2000 – REVISED MAY 2005

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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.

All trademarks are the property of their respective owners.

Summary of content (14 pages)

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INA163 SBOS177D – NOVEMBER 2000 – REVISED MAY 2005 Low-Noise, Low-Distortion INSTRUMENTATION AMPLIFIER FEATURES DESCRIPTION ● ● ● ● ● ● ● The INA163 is a very low-noise, low-distortion, monolithic instrumentation amplifier. Its current-feedback circuitry achieves very wide bandwidth and excellent dynamic response over a wide range of gain. It is ideal for low-level audio signals such as balanced lowimpedance microphones.
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ELECTROSTATIC DISCHARGE SENSITIVITY PIN CONFIGURATION Top View 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.
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ELECTRICAL CHARACTERISTICS: VS = ±15V TA = +25°C and at rated supplies, VS = ±15V, RL = 2kΩ connected to ground, unless otherwise noted. INA163UA PARAMETER CONDITIONS MIN GAIN Range Gain Equation(1) Gain Error, G = 1 G = 10 G = 100 G = 1000 Gain Temp Drift Coefficient, G = 1 G > 10 Nonlinearity, G = 1 G = 100 INPUT STAGE NOISE Voltage Noise fO = 1kHz fO = 100Hz fO = 10Hz Current Noise fO = 1kHz 1 to 10000 G = 1 + 6k/RG ±0.1 ±0.2 ±0.2 ±0.5 ±1 ±25 ±0.0003 ±0.
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TYPICAL CHARACTERISTICS At TA = +25°C, VS = 5V, VCM = 1/2 VS, RL = 25kΩ, CL = 50pF, unless otherwise noted. GAIN vs FREQUENCY THD+N vs FREQUENCY 70 0.1 60 VO = 5Vrms RL = 10kΩ G = 1000 G = 1000 50 G = 100 30 20 0.01 THD+N (%) Gain (dB) 40 G = 10 10 G = 100 0.001 0 G = 10 G=1 −10 G=1 −20 0.
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TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VS = 5V, VCM = 1/2 VS, RL = 25kΩ, CL = 50pF, unless otherwise noted. OUTPUT VOLTAGE SWING vs OUTPUT CURRENT SETTLING TIME vs GAIN V+ 10 20V Step 8 (V+) − 4 Settling Time (µs) Output Voltage to Rail (V) (V+) − 2 (V+) − 6 (V−) + 6 (V−) + 4 0.01% 6 4 2 (V−) + 2 0.
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APPLICATIONS INFORMATION temperature drift. These effects can be inferred from the gain equation. Make a short, direct connection to the gain set resistor, RG. Avoid running output signals near these sensitive input nodes. Figure 1 shows the basic connections required for operation. Power supplies should be bypassed with 0.1µF tantalum capacitors near the device pins. The output Sense (pin 8) and output Reference (pin 10) should be low-impedance connections.
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INPUT CONSIDERATIONS OFFSET VOLTAGE TRIM Very low source impedance (less than 10Ω) can cause the INA163 to oscillate. This depends on circuit layout, signal source, and input cable characteristics. An input network consisting of a small inductor and resistor, as shown in Figure 2, can greatly reduce any tendency to oscillate. This is especially useful if a variety of input sources are to be connected to the INA163.
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Phantom Power +48V R3 47k + 47 F +15V R1 6.8k 0.1 F R2 6.8k 1N4148 C1(1) 47 F 60V + 1 Female XLR Connector R6(2) 5 3 2 A1 INA163 C2(1) 47 F 60V + 9 VO 10 1M R7(3) 1k R4 2.2k 8 R5 2.2k 0.1 F 0.1 F 1N4148 A2 OPA134 NOTES: (1) Use non-polar capacitors if phantom power is to be turned off. (2) R6 sets maximum gain. (3) R7 sets minimum gain. 15V 15V Optional DC Output Control Loop FIGURE 5. Phantom-Powered Microphone Preamplifier.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device INA163UA/2K5 Package Package Pins Type Drawing SOIC D 14 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 16.4 Pack Materials-Page 1 6.5 B0 (mm) K0 (mm) P1 (mm) 9.0 2.1 8.0 W Pin1 (mm) Quadrant 16.
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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) INA163UA/2K5 SOIC D 14 2500 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.