austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: [email protected] Please visit our website at www.ams.com Data sheet AS1713 D i f f e r e n c e A m p l i f i e r, 1 0 M H z , 1 0 V / µ s , R a i l - t o - R a i l I / O w i t h S h u td o w n 1 General Description 2 Key Features Rail-to-Rail Input and Output Supply Current: 1.6mA Single-Supply Operation: 2.7 to 5.5V Voltage Gain: 1 High Slew Rate: 10V/µs A classical single amplifier approach ensures that the differential gain is determined by a simple ratio of two internal resistors. A fixed gain of x1 is available. lv Gain-Bandwidth Product: 10MHz al id Constant Output Drive Capability: 50mA The AS1713 is a low cost cmos difference amplifier providing extended common mode voltage range for a single rail 5V supply. Resistor trimming during final test ensures a typical common mode rejection of 60dB. Low input bias currents, 10MHz gain bandwidth, low total harmonic distortion (THD) and a rail-to-rail output drive capability of typically 200mA (@ 5V supply) provide support for a number of signal processing applications such as audio line receivers, ground loop breakers and current sensing. Linearity is suitable for 12bit ADC measurement. Power-Supply Rejection Ratio: 70dB am lc s on A te G nt st il Common Mode Rejection Ratio: 60dB No Phase Reversal for Overdriven Inputs Single ended input resistance is equalised (10kΩ ±20%) at each input terminal. This feature provides additional common mode rejection when long balanced input cables connect at the input. Unity-Gain Stable for Capacitive Loads: Up to 100pF Shutdown Mode Current: 1nA A EN pin reduces the quiescent current of the device. MLPD (2x2mm) 8-pin package 3 Applications The device is ideal for headphone amplifiers with ground interference rejection, infotainment high drive audio line buffers with ground interference rejection, audio differential-to-single-ended conversion and instrumentation amplifier back-end. ni ca Figure 1. AS1713 - Block Diagram Te ch INN EN VDD R1 AS1713 R2 – SENSE OUT + INP R3 R4 REF VSS www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 1 - 16 AS1713 Datasheet - P i n o u t 4 Pinout Pin Assignments INP 1 8 REF INN 2 7 SENSE AS1713 6 VSS VDD 4 5 OUT lv EN 3 am lc s on A te G nt st il Pin Descriptions Table 1. Pin Descriptions al id Figure 2. Pin Assignments (Top View) Pin Name INP INN 3 EN 4 5 6 7 8 VDD OUT VSS SENSE REF Description Non-inverting Input. Inverting Input. Active-Low Enable Input. A logic low on this pin shuts down the device. VSS: device in shutdown. VDD: normal operation. Positive Supply Input. Amplifier Output. Negative Supply Input. This pin must be connected to ground in single-supply applications. Sense Input. Ground this pin when external inverting gain control is required. Reference Input. Reference to non-inverting input resistor network. Te ch ni ca Pin Number 1 2 www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 2 - 16 AS1713 Datasheet - A b s o l u t e M a x i m u m R a t i n g s 5 Absolute Maximum Ratings Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Electrical Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Parameter Min Max Units Comments -0.3 +7 V Supply Voltage (All Other Pins) VSS - 0.3 VDD + 0.3 V 1 s Output Short-Circuit Duration to VDD or VSS Electrostatic Discharge Electrostatic Discharge HBM 1 kV Norm: MIL 883 E method 3015 am lc s on A te G nt st il Temperature Ranges and Storage Conditions lv Supply Voltage (VDD to VSS) al id Electrical Parameters Thermal Resistance ΘJA Storage Temperature Range 33 -65 Junction Temperature Package Body Temperature Humidity non-condensing +150 ºC +150 ºC +260 ºC 85 % 1 on PCB The reflow peak soldering temperature (body temperature) specified is in accordance with IPC/ JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification for Non-Hermetic Solid State Surface Mount Devices”. The lead finish for Pb-free leaded packages is matte tin (100% Sn). Represents a max. floor life time of unlimited Te ch ni ca Moisture Sensitive Level 5 °C/W www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 3 - 16 AS1713 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6 Electrical Characteristics All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods. DC Electrical Characteristics Symbol Parameter TAMB Operating Temperature Range VDD Supply Voltage Range Condition Min Typ -40 Inferred from Power Supply Rejection Ratio Test 2.7 Input Offset Voltage -1.5 RSEIN Single-Ended Input Resistance 8 1 Max Unit +85 °C 5.5 V +1.5 mV lv VOFFSET al id VDD = 2.7V, VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RLOAD = Infinite, VEN = VDD, Typical values at TAMB = 25°C (unless otherwise specified). Table 3. DC Electrical Characteristics VCM Common Mode Input Voltage Range Inferred from Common Mode Rejection Ratio CMRR Common Mode Rejection Ratio VSS < VCM < VDD 45 PSRR Power Supply Rejection Ratio VDD = 2.7 to 5.5V 60 ROUT Shutdown Output Impedance VEN = 0V VOUT-SHDNN Shutdown Output Voltage VEN = 0V, RLOAD = 2kΩ to VDD 10 VSS 12 kΩ VDD V dB 70 dB 130 Ω am lc s on A te G nt st il 60 Output Voltage Swing VOUT Output Voltage IOUT Output Source/Sink Current Quiescent Supply Current IDD-SHDNN Shutdown Supply Current ca IDD VDD - VOH or VOL - VSS VDD - VOH or VOL - VSS 170 400 RLOAD = 32Ω 350 650 RLOAD = 200Ω 70 120 RLOAD = 2kΩ 9 20 ILOAD = 10mA, VDD = 2.7V 55 100 ILOAD = 50mA, VDD = 5V 100 200 VDD = 2.7V, V- = VCM, V+ = VCM±100mV 100 VDD = 5.0V, V- = VCM, V+ = VCM±100mV 200 ni mV mV mA VDD = 2.7V, VCM = VDD/2 1.6 3.2 VDD = 5.0V, VCM = VDD/2 2.3 4.6 VEN = 0V, VDD = 2.7V 1 2000 Shutdown Mode VSS + 0.3 Normal Operation VDD 0.3 VSS < VEN < VDD 50 EN Logic Threshold EN Input Bias Current mV mA 1 nA V pA Te ch 1. Guaranteed by design. www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 4 - 16 AS1713 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s AC Electrical Characteristics VDD = 2.7V, VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RLOAD = Infinite, VEN = VDD, TAMB = -40 to +85ºC. Typical values at TAMB = 25°C. Table 4. AC Electrical Characteristics Symbol Parameter Conditions GBWP Gain-Bandwidth Product VCM = VDD/2 fC Min Typ Max Units MHz Cut-off Frequency 8.5 MHz SR Slew Rate 5 PM Phase Margin 60 GM Gain Margin 1 10 THD+N Total Harmonic Distortion Plus Noise CIN Input Capacitance en Voltage-Noise Density f = 1kHz Capacitive-Load Stability deg dB 60 dBc 2 pF 40 am lc s on A te G nt st il 1 V/µs lv f = 10kHz, VOUT = 2VP-P, AVCL = 1V/V al id 4 nV/√Hz f = 10kHz 30 AVCL = 1V/V, no sustained oscillations 100 pF tSHDN Shutdown Time 1 µs tENABLE Enable Time from Shutdown 7 µs tON Power-Up Time 20 ns Te ch ni ca 1. Guaranteed by design. www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 5 - 16 AS1713 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s 7 Typical Operating Characteristics VDD = 2.7V; VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RLOAD = ∞, VEN = VDD TAMB = +25ºC (unless otherwise specified). Figure 3. Gain and Phase vs. Frequency Figure 4. Gaind and Phase vs. freq.; CLOAD = 100pF 100 210 100 210 Gain Gain 120 20 90 0 60 0 -20 30 -20 40 20 0.1 0 1000 100000 10 -40 1E-05 Frequency (kHz) 90 60 30 100 0.001 0.1 Figure 6. CMRR vs. Frequency 100 90 90 80 80 70 CMRR (dB) 70 60 50 40 30 60 50 40 30 20 20 10 0 1 100 0 0.00001 ca 10 10000 1000000 0.001 Frequency (kHz) 1000 100 Supply Current (nA) ch 2.5 10 Figure 8. Shutdown Current vs. Temperature ni 3 0.1 Frequency (kHz) Figure 7. Supply Current vs. Temperature 2 Te Supply Current (mA) 0 1000 100000 10 Frequency (kHz) Figure 5. PSRR vs. Frequency PSRR (dB) 120 am lc s on A te G nt st il 0.001 150 Phase 40 -40 1E-05 al id 60 Phase (deg) 150 180 lv Phase 80 Gain (dB) Gain (dB) 60 180 Phase (deg) 80 1.5 1 10 1 0.5 Vdd = 2.7V Vdd = 2.7V Vdd = 5.0V 0 -40 -15 10 35 60 Vdd = 5.0V 85 0.1 -40 Temperature (°C) www.austriamicrosystems.com/Audio/OpAmps/AS1713 -15 10 35 60 85 Temperature (°C) Revision 1.03 6 - 16 AS1713 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s Figure 9. Supply Current vs. CMRR Figure 10. Input Voltage Noise vs. Frequency 3 Supply Current (mA) 2.5 2 1.5 1 0.5 1000 100 al id Input Voltage Noise (nV/√Hz) 10000 10 Vdd = 5.0V 1 0.0001 0 0 1 2 3 4 5 0.01 Figure 11. Output Swing High vs. Temp.; VDD = 2.7V 200 100 10000 Figure 12. Output Swing Low vs. Temp.; VDD = 2.7V 200 180 180 160 VOUT - VSS (mV) 160 VOUT - VSS (mV) 1 Frequency (kHz) am lc s on A te G nt st il Common-Mode Voltage (V) lv Vdd = 2.7V 140 120 100 80 60 140 120 100 80 60 40 40 10mA 10mA 200Ohm 20 -40 -15 10 35 60 200Ohm 20 -40 85 -15 Figure 13. Output Swing High vs. Temp.; VDD = 5.5V 180 160 VOUT - VSS (mV) 140 120 100 80 60 140 120 100 80 60 40 40 50mA 50mA 200Ohm 20 -40 85 180 Te VOUT - VSS (mV) 60 200 ch 160 35 Figure 14. Output Swing Low vs. Temp.; VDD = 5.5V ni 200 10 Temperature (°C) ca Temperature (°C) -15 10 35 60 200Ohm 85 20 -40 Temperature (°C) www.austriamicrosystems.com/Audio/OpAmps/AS1713 -15 10 35 60 85 Temperature (°C) Revision 1.03 7 - 16 AS1713 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s Figure 15. VOUT vs. IOUT, sourcing Figure 16. VOUT vs. IOUT, sinking 6 2 2.7V 2 1 0.5 t > 10s 1 t > 10s 2.7V t < 1s t > 10s 0 50 100 150 200 250 300 t > 10s 5.0V t < 1s 0 t < 1s t < 1s 0 350 0 50 100 150 200 250 Figure 17. Transient Response; VIN = 100mV, CLOAD = 10pF Figure 18. Transient Response; VIN = 100mV, CLOAD = 100pF OUT OUT 50mV/DIV IN IN 300 Output Current (mA) am lc s on A te G nt st il Output Current (mA) 50mV/DIV 3 1.5 al id 4 lv Output Voltage (V) Output Voltage (V) 5.0V 5 500ns/Div ca 500ns/Div CLOAD = 10pF Figure 20. Transient Response; VIN = 1V, CLOAD = 100pF IN 50mV/DIV 50mV/DIV OUT OUT Te IN ch ni Figure 19. Transient Response; VIN = 1V, 500ns/Div www.austriamicrosystems.com/Audio/OpAmps/AS1713 500ns/Div Revision 1.03 8 - 16 AS1713 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s Figure 22. Transient Response; VIN = 2V, CLOAD = 100pF al id 50mV/DIV 500ns/Div Te ch ni ca am lc s on A te G nt st il 500ns/Div lv OUT OUT 50mV/DIV IN CLOAD = 10pF IN Figure 21. Transient Response; VIN = 2V, www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 9 - 16 AS1713 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 8 Application Information Ground Loop Interference Suppression: In real life situations the signal source and the amplifier are often located a distance apart, but still share the same ground arrangement with a number of other circuits. The ground system is never perfect as it has a small distributed resistance, capacitance and inductance. Thus, the ground appears as a distributed impedance. al id As a various current flow into and out of the ground system exists, a small voltage drop will inevitably occur, causing different voltages within the ground. In Figure 23 and Figure 24, RGND denotes the ground resistance between the input signal ground and the output signal ground. The voltage drop across RGND should ideally have no effect on individual circuit performance. In the single ended inverting amplifier shown in Figure 23, the amplifier sees VIN and VGND in series, so the amplifier output is: VOUT = - [R2/R1] [VIN+VGND] lv (EQ 1) Figure 23. Single Ended Inverting Amplifier R2 am lc s on A te G nt st il R1 – + VIN + + VOUT - RGND + VGND - VGND is part of the output expression and is known as ground loop interference, ground bounce or even common impedance crosstalk. In some situations this interference signal can be close to or the same value as the wanted input signal such as in sensor applications. A difference amplifier is a simple method used to reduce the effect of ground interference. VIN is regarded as a differential input signal, and VGND a common mode signal. From Figure 24, the amplifier output is: VOUT = - [R2/R1] VIN (EQ 2) Figure 24. Difference Amplifier ca INN + EN ni VIN Te ch INP R1 R2 SENSE – AS1713 OUT + R3 R4 REF + VOUT - RGND + VGND - The additional cost of extra matched resistors is offset by the rejection of the unwanted common mode ground interference. www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 10 - 16 AS1713 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Differential Input / Output Buffer Figure 25. Differential Input / Output Buffer VDD EN INP AS1713 R3 – + SENSE OUT R4 REF VSS VOUT Differential Output VDD R1 R2 SENSE am lc s on A te G nt st il INN al id VIN Differential Input R2 R1 lv INN EN INP AS1713 R3 – + OUT R4 REF VDD/2 VSS Rail-to-Rail Input Stage The AS1713 CMOS op amps have parallel connected n- and p-channel differential input stages that combine to accept a common-mode range extending to both supply rails. The n-channel stage is active for common-mode input voltages typically greater than (VSS + 1.2V), and the pchannel stage is active for common-mode input voltages typically less than (VDD - 1.2V). Rail-to-Rail Output Stage Te ch ni ca The minimum output is within millivolts of ground for single- supply operation, where the load is referenced to ground (VSS). Figure 26 shows the input voltage range and the output voltage swing of an AS1713 connected as a voltage follower. The maximum output voltage swing is load dependent although it is guaranteed to be within 500mV of the positive rail (VDD = 2.7V) even with maximum load (32Ω to ground) as shown in Figure 27. www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 11 - 16 AS1713 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Figure 27. Rail-to-Rail Input / Output Range; 3.0V, RLOAD = 32Ω lv OUT 1V/DIV 1V/DIV am lc s on A te G nt st il OUT VIN = VDD = al id IN VIN = VDD = IN Figure 26. Rail-to-Rail Input / Output Range; 3.0V, RLOAD = 100kΩ 2µs/Div 2µs/Div Note: The absolute maximum ratings (see page 3) for power dissipation and output short-circuit duration (10s, max) must be adhered since the output current can exceed 200mA (see Typical Operating Characteristics on page 6). Shutdown When EN is pulled to low, the supply current drops to 0.5µA, the amplifier is disabled and the output is driven to VSS. Pulling EN to high enables the amplifier. When exiting shutdown, there is a 6µs delay before the amplifier output becomes active. Note: Because the output is actively driven to VSS in shutdown, any pullup resistor on the output causes a current drain from the supply. Power-Up The AS1713 typically settle within 5µs after power-up. Power Supplies and Layout ca The AS1713 can operate from a single 2.7V to 5.5V supply or from dual ±1.35V to ±2.5V supplies. Good design improves device performance by decreasing the amount of stray capacitance at the op amp inputs/outputs. For single-supply operation, bypass the power supply with a 0.1µF ceramic capacitor. ni For dual-supply operation, bypass each supply to ground. Te ch Decrease stray capacitance by placing external components close to the op amp pins, minimizing trace and lead lengths. www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 12 - 16 AS1713 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s 9 Package Drawings and Markings Te ch ni ca am lc s on A te G nt st il lv al id Figure 28. MLPD (2x2mm) 8-pin Marking www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 13 - 16 AS1713 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s Te ch ni ca am lc s on A te G nt st il lv al id Figure 29. MLPD (2x2mm) 8-pin Package www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 14 - 16 AS1713 Datasheet - O r d e r i n g I n f o r m a t i o n 10 Ordering Information The device is available as the standard products shown in Table 5. Table 5. Ordering Information Marking Description Delivery Form Package AS1713-BTDT ABB Difference Amplifier, 10MHz, 10V/µs, Rail-to-Rail I/O with Shutdown Tape and Reel MLPD (2x2mm) 8-pin Note: All products are RoHS compliant. Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect Te ch ni ca am lc s on A te G nt st il lv For further information and requests, please contact us mailto:[email protected] or find your local distributor at http://www.austriamicrosystems.com/distributor al id Ordering Code www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 15 - 16 AS1713 Datasheet Copyrights Copyright © 1997-2011, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. al id Disclaimer lv Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. ca am lc s on A te G nt st il The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Headquarters ni Contact Information ch austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Te Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/Audio/OpAmps/AS1713 Revision 1.03 16 - 16