AMSCO AS1713

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: ams_sales@ams.com
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:sales@austriamicrosystems.com
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