Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOIC 16

Quad High-Speed Precision

Difet

OPERATIONAL AMPLIFIER

International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706

Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

Difet

, Burr-Brown Corp.

BIFET

, National Semiconductor Corp.

FEATURES

● WIDE BANDWIDTH: 6.4MHz

● HIGH SLEW RATE: 35V/

µs

● LOW OFFSET:

±750µV max

● LOW BIAS CURRENT:

±4pA max

● LOW SETTLING: 1.5

µs to 0.01%

● STANDARD QUAD PINOUT

DESCRIPTION

The OPA404 is a high performance monolithic

Difet

(dielectrically-isolated FET) quad operational

amplifier. It offers an unusual combination of very-

low bias current together with wide bandwidth and

fast slew rate.

Noise, bias current, voltage offset, drift, and speed are

superior to BIFET

amplifiers.

Laser-trimming of thin-film resistors gives very low

offset and drift—the best available in a quad FET op

amp.

The OPA404's input cascode design allows high pre-

cision input specifications and uncompromised high-

speed performance.

Standard quad op amp pin configuration allows up-

grading of existing designs to higher performance

levels. The OPA404 is unity-gain stable.

OPA404

APPLICATIONS

● PRECISION INSTRUMENTATION

● OPTOELECTRONICS

● SONAR, ULTRASOUND

● PROFESSIONAL AUDIO EQUIPMENT

● MEDICAL EQUIPMENT

● DETECTOR ARRAYS

Cascode

+In

–In

Output

OPA404 Simplified Circuit

(Each Amplifier)

–V

SBOS149

Summary of content (16 pages)

PAGE 1
OPA404 Quad High-Speed Precision Difet ® OPERATIONAL AMPLIFIER FEATURES APPLICATIONS ● WIDE BANDWIDTH: 6.4MHz ● HIGH SLEW RATE: 35V/µs ● LOW OFFSET: ±750µV max ● PRECISION INSTRUMENTATION ● ● ● ● ● ● LOW BIAS CURRENT: ±4pA max ● LOW SETTLING: 1.5µs to 0.01% ● STANDARD QUAD PINOUT OPTOELECTRONICS SONAR, ULTRASOUND PROFESSIONAL AUDIO EQUIPMENT MEDICAL EQUIPMENT DETECTOR ARRAYS DESCRIPTION The OPA404 is a high performance monolithic Difet ®(dielectrically-isolated FET) quad operational amplifier.
PAGE 2
SPECIFICATIONS ELECTRICAL At VCC = ±15VDC and TA = +25°C unless otherwise noted. OPA404AG, KP, KU (1) PARAMETER CONDITIONS MIN INPUT NOISE Voltage: fO = 10Hz fO = 100Hz fO = 1kHz fO = 10kHz fB = 10Hz to 10kHz fB = 0.1Hz to 10Hz Current: fB = 0.1Hz to 10Hz fO = 0.1Hz thru 20kHz OFFSET VOLTAGE Input Offset Voltage KP, KU Average Drift KP, KU Supply Rejection KP, KU Channel Separation TYP MAX OPA404BG MIN 32 19 15 12 1.4 0.95 12 0.
PAGE 3
ELECTRICAL (FULL TEMPERATURE RANGE SPECIFICATIONS) At VCC = ±15VDC and TA = TMIN to TMAX unless otherwise noted. OPA404AG, KP, KU PARAMETER TEMPERATURE RANGE Specification Range KP, KU CONDITIONS MIN Ambient Temperature –25 0 INPUT OFFSET VOLTAGE Input Offset Voltage KP KU Average Drift KP, KU Supply Rejection TYP VCM = 0VDC 75 OPA404BG MAX MIN +85 +70 * ±450 ±1 ±3 ±5 96 2mV ±3.5 TYP OPA404SG MAX MIN * –55 TYP ±1.5mV * ±550 * 80 MAX UNITS +125 °C °C ±2.
PAGE 4
DICE INFORMATION 2 3 1 14 NC 13 4 12 NC NC PAD FUNCTION PAD FUNCTION 1 2 3 4 5 6 7 Output A –Input A +Input A +VCC +Input B –Input B Output B 8 9 10 11 12 13 14 Output C –Input C +Input C –VCC +Input D –Input D Output D Substrate Bias: –VCC NC: No connection MECHANICAL INFORMATION NC NC 5 11 6 7 8 NC 9 Die Size Die Thickness Min. Pad Size MILS (0.001") MILLIMETERS 108 x 108 ±5 20 ±3 4x4 2.74 x 2.74 ±0.13 0.51 ±0.08 0.10 x 0.
PAGE 5
TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VCC = ±15VDC unless otherwise noted. BIAS AND OFFSET CURRENT vs INPUT COMMON-MODE VOLTAGE POWER SUPPLY REJECTION vs FREQUENCY 10 1 Offset Current 0.1 0.1 Power Supply Rejection (dB) Bias Current 1 140 Offset Current (pA) 0.01 0.
PAGE 6
TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VCC = ±15VDC unless otherwise noted.
PAGE 7
TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VCC = ±15VDC unless otherwise noted. SUPPLY CURRENT vs TEMPERATURE CHANNEL SEPARATION vs FREQUENCY 150 Channel Separation (dB) Supply Current (mA) 11 10 9 8 RL = ∞ 140 130 120 RL = 2kΩ 110 0 7 –75 –50 –25 0 +25 +50 +75 Ambient Temperature (°C) +100 +125 10 TOTAL HARMONIC DISTORTION vs FREQUENCY 1k Frequency (Hz) 10k 100k OPEN-LOOP GAIN vs SUPPLY VOLTAGE 1 104 AV = +101V/V 40.2kΩ 402Ω 0.1 6.5Vrms Voltage Gain 2kΩ AV = +101V/V 0.
PAGE 8
APPLICATIONS INFORMATION GUARDING AND SHIELDING As in any situation where high impedances are involved, careful shielding is required to reduce “hum” pickup in input leads. If large feedback resistors are used, they should also be shielded along with the external input circuitry. OFFSET VOLTAGE ADJUSTMENT The OPA404 offset voltage is laser-trimmed and will require no further trim for most applications. If desired, offset voltage can be trimmed by summing (see Figure 1).
PAGE 9
BIAS CURRENT CHANGE vs COMMON-MODE VOLTAGE The input bias currents of most popular BIFET operational amplifiers are affected by common-mode voltage (Figure 4). Higher input FET gate-to-drain voltage causes leakage and ionization (bias) currents to increase. Due to its cascode input stage, the extremely low bias current of the OPA404 is not compromised by common-mode voltage. APPLICATIONS CIRCUITS Figures 5 through 11 are circuit diagrams of various applications for the OPA404.
PAGE 10
2 1 1 1/4 OPA404 Output = 1µA/V 3 Differential Input 3 E1 1MΩ 6 2 E1 IO R Load IO = (E1 – E2) /R 5 INA105 FIGURE 7. Voltage-Controlled Microamp Current Source. <1pF to prevent gain peaking 1000MΩ Pin Photodiode UDT Pin-040A Guard 0.01µF +15V 2 8 1/4 OPA404 3 4 Output 1 0.1µF 5 x 88 V/W 0.01µF 1000MΩ –15V Circuit must be well shielded. FIGURE 8. Sensitive Photodiode Amplifier.
PAGE 11
1µF 4 1µF 57.6kΩ In 1µF 2 A 3 B 44.2kΩ 1 5 61.9kΩ 7 13 1µF 9 127kΩ 8 C 10 14 D 12 Out 60.4kΩ 0.033µF 18.7kΩ 0.22µF 12.1kΩ 0.47µF 9.53kΩ 0.47µF Gain = +1V/V 48dB/Octave, 10Hz LPF Butterworth Response FIGURE 10. 8-Pole 10Hz Low-Pass Filter. 4.02kΩ 4.02kΩ 4.02kΩ B A 4.02kΩ C D Out In 1kΩ 1kΩ 1kΩ 1kΩ AV = +635 BW ≈ 650kHz Gain-Bandwidth ≈ 410MHz FIGURE 11. Wide-Band Amplifier.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.com (3) 11-Apr-2013 MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side 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 Top-Side Marking for that device.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device OPA404KU/1K Package Package Pins Type Drawing SOIC DW 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 16.4 Pack Materials-Page 1 10.75 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.7 2.7 12.0 16.
PAGE 15
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA404KU/1K SOIC DW 16 1000 367.0 367.0 38.
PAGE 16
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 JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.