Details, datasheet, quote on part number: 4127
Part4127
CategoryAnalog & Mixed-Signal Processing => Amplifiers => Logarithmic Amplifiers
Description
CompanyTexas Instruments, Inc.
DatasheetDownload 4127 datasheet
Quote
Find where to buy
 
  

 

Features, Applications

FEATURES

q ACCEPTS INPUT VOLTAGES OR CURRENTS OF EITHER POLARITY q WIDE INPUT DYNAMIC RANGE 6 Decades of Current 4 Decades of Voltage q VERSATILE Log, Antilog, and Log Ratio Capability current and four decades of input voltage. In addition, a current inverter and a precise internal reference allow pin programming of the as a logarithmic, log ratio, or antilog amplifier. To further increase its versatility and reduce your system cost, the 4127 has an uncommitted operational amplifier in its package that can be used as a buffer, inverter, filter, or gain element. The 4127 is available with initial accuracies (log conformity) of 0.5% and 1.0%, and operates over an ambient temperature range to +70C. With its versatility and high performance, the 4127 has many applications in signal compression, transducer linearization, and phototube buffering. Manufacturers of medical equipment, analytical instruments, and process control instrumentation will find the 4127 a low cost solution to many signal processing problems.

DESCRIPTION

Packaged in a ceramic double wide DIP, the 4127 is the first hybrid logarithmic amplifier that accepts signals of either polarity from current or voltage sources. A special purpose monolithic chip, developed specifically for logarithmic conversions, functions accurately for up to six decades of input

International Airport Industrial Park Mailing Address: PO Box 11400 Tel: (520) 746-1111 Twx: 910-952-1111 Cable: BBRCORP

Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd. Tucson, AZ 85706 Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: 548-6132 PDS-346F Printed in U.S.A. October, 1993

SPECIFICATIONS

Typical Specifications at +25C with rated supplies, unless otherwise noted. MODEL % of FSR Current Source Input: to 1mA Voltage Input: to 10V INPUT Current Source Input, Pin 4 Current Source Input, Pin 7 Reference Current Input, Pin 2 Absolute Maximum Inputs OUTPUT Voltage Current Impedance FREQUENCY RESPONSE 3dB Small Signal at Current Input of 10nA Step Response to within 1% of Final Value (IR = 5) STABILITY Scale Factor Drift (A/C) Reference Current Drift (IR/C) Input Offset Current Drift (IS/C) Input Offset Voltage Drift Accuracy vs Supply Variation Reference Current Input Offset Voltage Input Noise - Current Input Noise - Voltage Input 4127KG 0.5% max 0.5% max 4127JG 1% max 1% max

IREF Output IREF Input No Pin Present +I Input

24 No Pin Present 23 IREFBias 22 Postive Supply 21 Common 20 No Pin Present 19 Gain Adjust 18 Log Output 17 No Pin Present 16 No Pin Present 15 No Pin Present 14 Negative Supply 13 NC

No Pin Present Current Inverter Input No Pin Present Op Amp + Input

0.001 I R/C for A 0.003 IR/C for at +25C, Doubles Every 300V/V 1pA, rms, 10kHz 10A, rms, 85dB 5mA

UNCOMMITTED OP AMP CHARACTERISTICS Input Offset Voltage Input Bias Current Input Impedance Large Signal Voltage Gain Output Current TEMPERATURE RANGE Specification Operating Storage POWER SUPPLY REQUIREMENTS Rated Supply Voltages Supply Voltage Range Supply Current Drain at Quiescent, max at Full Load, max NOTE: (1) Log conformity at 25C.

NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.

At +25C with rated supplies, unless otherwise noted.
RELATIONSHIP OF REFERENCE CURRENT, IR AND EXTERNAL RESISTOR, 9 8 Scale Factor "A" (V) 10A
RELATIONSHIP OF SCALE FACTOR "A" TO GAIN SETTING RESISTOR, R2

ACCURACY The deviation from the ideal output voltage defined as a percent of the full scale output voltage. INPUT/OUTPUT RANGE The log relationships of A log STABILITY The use of a monolithic transistor quad and low-drift amps minimizes drift, but some drift remains in the scale-factor, reference current, and input offset. Input offset consists of a bias current plus the op amp input voltage offset divided by the signal source resistance. Also, there is some slight drift in conformity to the log function and in output amplifier offset, but this is generally negligible.

subject to the constraints specified. The 4127 can be operated with inputs lower than those given, but the accuracy will be degraded. FREQUENCY RESPONSE The small-signal frequency response varies considerably with signal level and scaling, so the frequency response is specified under several different operating conditions.

The is a complete logarithmic amplifier that can be pin-programmed to accept input currents or voltages of either polarity. By making use of the internal current inverter, reference current generator, log ratio element, and uncommitted op amp, you can generate a variety of logarith


 

Some Part number from the same manufacture Texas Instruments, Inc.
4127JG ti 4127, Logarithmic Amplifier
4213AM ti 4213, Multiplier-divider
4214AP ti 4214, Multiplier-divider
4423
4423P ti 4423, Precision Quadrature Oscillator
4N22
4N22A
4N23
4N23A
4N24
4N24A
4N25 ti 4N25, Optocoupler
4N26 ti 4N26, Optocoupler
4N27 ti 4N27, Optocoupler
4N28 ti 4N28, Optocoupler
4N35 ti 4N35, Optocoupler
4N36 ti 4N36, Optocoupler
4N37 ti 4N37, Optocoupler
4N45 ti 4N45, High Gain Darlington 1-Channel Optocoupler
4N46 ti 4N46, Optocoupler
4N47

PT6602D : Plug-in Power Solutions->Non-Isolated->Single Posi ti PT6602, 1.5Vout 9A 3.3V/5V-Input Adjustable Isr

SN54CDC341 : General Purpose/ 1-line to 8-line Clock Driver

SN74LVC574DWR : D-Type (3-State) Flip-Flops ti SN74LVC574, Octal Edge-triggered D-type Flip-flop With 3-State Outputs

TIBPAL22VP10-25MFK : High-performance Impact-x e Programmable Array Logic Circuits

TMX320F2812ZHHS : Digital Signal Controllers (dscs)

THS3095DDARG3 : Single- High-Voltage, Low Distortion, Current-feedback Operational Amplifier With Power-down

TMDXCNCD28035 : General Embedded Dev Board And Kit (mcu, Dsp, Fpga, Cpld) Programmers, Development System; CONTROL CARD PICCOLO F28035 Specifications: Type: MCU ; Contents: Board ; For Use With/Related Products: TMS320F28035 ; Lead Free Status: Lead Free Compliant by Exemption ; RoHS Status: RoHS Compliant by Exemption

SN761680DCH : Linear - Video Processing Integrated Circuit (ics) - Tube; SN761680DCH Specifications: Mounting Type: - ; Package / Case: - ; Type: - ; Packaging: Tube ; Applications: - ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant

TSC2004EVM-PDK : Eval And Demo Board And Kit Programmers, Development System; TSC2004EVM Specifications: Main Purpose: Interface, Touch Screen Controller ; Primary Attributes: 4-Wire Resistive Touch Screen Controller, I²C & SPI Interfaces ; Secondary Attributes: Graphical User Interface ; Supplied Contents: Board ; Utilized IC / Part: TSC2004 ; Embedded: No ; Lead Free Stat

TPS7A8400RGRT : LDO Voltage Regulators Hi Current-Low Noise Texas Instruments Power Management Solutions range from standard ICs to integrated solutions, including power modules, digital power, battery management and high-performance MOSFETs and gate drivers. TI's extensive product selection ranges from isolated AC/DC and DC/DC power supply controllers an

Same catergory

2SA1804 : Transistor ( Power Amplifier Applications ).

AN1393S : Dual Comparators. The AN1393 (AN6914) and the AN1393S (AN6914S) are dual (voltage) comparators with wide range of operating supply valtage. Wide range of operating voltages Single to 36V Dual 18V Low circuit current:0.6mA typ. Wide range of common-mode input voltages to VCC1.5V (single supply) Open collector output Pin No. Pin name Ch.1 output Ch.1 inverting input.

BBY34D : Silicon Tuning Varactors ( Hyperabrupt Junction Tuning Diode Frequency Linear Tuning Range 4 12 V ).

DS1801 : Dual Audio Taper Potentiometer. Ultra-low power consumption Operates from or 5V supplies Two digitally controlled, 65-position potentiometers including mute Logarithmic resistive characteristics (1 dB per step) Zero-crossing detection eliminates noise caused by wiper movement Serial port provides means for setting and reading both potentiometers wipers 14-pin PDIP, 16-pin SOIC, and 14-pin.

FX826 : Amps/tacs System Audio Processor.

LA4627 : . The a 2-channel power amplifier developed for use in radio/cassette player products. The LA4627 reduces the number of required external components by 50% over earlier products (BS/NF capacitors and oscillation prevention RC components) and thus can contribute significantly to space saving in end products. Provided in the ! 2 (VCC ! 2 (VCC = 3 Standby.

LC737212M : Telephone Dialer ic With On-chip Memory For Push-button Telephone. Telephone Dialer IC with On-Chip Memory for PushButton Telephones The LC737212 and LC737212M are CMOS LSI telephone dialers for pushbutton telephones. They support both DTMF and pulse dialing. These products include 25 16-digit memories for storing telephone numbers and one 63-digit memory for redialing, and they provide, in a single chip, all the functions.

MAX6511 : Low-Cost, Remote Sot Temperature Switches. The MAX6511/MAX6512/MAX6513 are fully integrated, remote temperature switches that use an external P-N junction (typically a diode-connected transistor) as the sensing element to measure the remote temperature. These devices assert a logic signal when the temperature crosses a factory-programmed threshold. Available trip thresholds are from in 10C.

TDA5660P : Modular For Tv, Video And Sound Signals.

TEA1501T : Power. Preliminary File under Integrated Circuits, IC11 1998 Aug 19 Direct off-line operation 276 V AC) Low external component count Integrated high voltage startup current source for a fast startup within 0.25 s Integrated power switch: 0.25 A Programmable primary peak current Data transfer from isolated secondary side to non-isolated primary side via the transformer.

TLE2027 : Excalibur Low-noise High-speed Precision op Amp. TLE2027Y, TLE2037Y EXCALIBUR LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS The TLE20x7 and TLE20x7A contain innovative circuit design expertise and high-quality process control techniques to produce a level of ac performance and dc precision previously unavailable in single operational amplifiers. Manufactured using Texas Instruments state-of-the-art.

TLV2221 : Advanced Lincmos(tm) Rail-to-rail Very Low-power Single op Amp. TLV2221, TLV2221Y Advanced LinCMOSTM RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS Output Swing Includes Both Supply Rails Low Noise. 19 nV/Hz Typ = 1 kHz Low Input Bias Current. 1 pA Typ Fully Specified for Single-Supply 3-V and 5-V Operation Very Low Power. 110 A Typ Common-Mode Input Voltage Range Includes Negative Rail Wide Supply Voltage.

TS4851 : 1W LouDSPeaker & 2X160MW Headset BTL Drivers With Digital Volume Control.

UC2854B : Power. Enhanced High Power Factor Preregulator. Controls Boost PWM to Near Unity Power Factor Limits Line Current Distortion To <3% World-Wide Operation Without Switches Accurate Power Limiting Fixed Frequency Average Current Mode Control High Bandwidth (5MHz), Low Offset Current Amplifier Integrated Current and Voltage Amp Output Clamps Multiplier Improvements: Linearity, 500mV VAC Offset (eliminates.

UPG2110TB : L-band pa Driver Amplifier. The PG2106TB and PG2110TB are GaAs MMIC for PA driver amplifier with variable gain function which were developed for PDC (Personal Digital Cellular in Japan) and another L-band application. The device can operate with 3.0 V, having the high gain and low distortion. The PG2106TB is for 800 MHz band application, and the to 960 MHz, to 1453 MHz@Pout.

V6340 : Power. Low Cost 3-Pin Voltage Detector. n SOT-23 and TO-92 package n Reset output state guaranteed down to VDD OC n Low supply current: stays stable during switching versions N, N: typ. A at VDD 5 V other Versions: typ. mA at VDD 5 V, VDD RES or RES 2.5% voltage threshold accuracy High noise immunity No external components required Push-pull or Open drain output Pin compatible with MAX SOT-23,.

MH103A : High Dynamic Range PCS-Band MMIC Mixer. +34 dBm IIP3 RF: 2700 MHz LO: 2650 MHz IF: 300 MHz +17 dBm Drive Level Lead-free/green/RoHS-compliant SOIC-8 SMT package No External Bias Required The is a passive GaAs MESFET mixer that provides high dynamic range performance in a low-cost lead-free/green/RoHS-compliant SOIC-8 package. WJ's MH103A uses patented techniques to realize +34 dBm Input.

ADG1219 : Low Capacitance, Low Charge Injection, 15 V/12 V ICMOS SPDT In SOT-23 The ADG1219 is a monolithic iCMOS?? device containing an SPDT switch. An EN input is used to enable or disable the device. When disabled, all channels are switched off. When on, each channel conducts equally well in both directions and has an input signal range that extends to the supplies.

 
0-C     D-L     M-R     S-Z