INA217AIDWT [TI]
Low-Noise, Low-Distortion INSTRUMENTATION AMPLIFIER Replacement for SSM2017; 低噪声，低失真仪表放大器替换SSM2017
| 型号： | INA217AIDWT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Low-Noise, Low-Distortion INSTRUMENTATION AMPLIFIER Replacement for SSM2017 |
| 文件： | 总11页 (文件大小：218K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INA217
I
N
A
2
1
7
I
N
A
2
1
7
SBOS247A – JUNE 2002 – REVISED SEPTEMBER 2002
Low-Noise, Low-Distortion
INSTRUMENTATION AMPLIFIER
Replacement for SSM2017
FEATURES
DESCRIPTION
ꢀ LOW NOISE: 1.3nV/√Hz at 1kHz
The INA217 is a low-noise, low-distortion, monolithic instru-
mentation amplifier. Current-feedback circuitry allows the
INA217 to achieve wide bandwidth and excellent dynamic
response over a wide range of gain. The INA217 is ideal for
low-level audio signals such as balanced low-impedance
microphones. Many industrial, instrumentation, and medical
applications also benefit from its low noise and wide band-
width.
ꢀ LOW THD+N: 0.004% 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
ꢀ DIP-8 AND SOL-16 WIDEBODY PACKAGES
Unique distortion cancellation circuitry reduces distortion to
extremely low levels, even in high gain. The INA217 provides
near-theoretical noise performance for 200Ω source imped-
ance. The INA217 features differential input, low noise, and
low distortion that provides superior performance in profes-
sional microphone amplifier applications.
APPLICATIONS
ꢀꢀPROFESSIONAL MICROPHONE PREAMPS
ꢀ MOVING-COIL TRANSDUCER AMPLIFIERS
ꢀ DIFFERENTIAL RECEIVERS
ꢀ BRIDGE TRANSDUCER AMPLIFIERS
The INA217 features wide supply voltage, excellent output
voltage swing, and high output current drive making it an
optimal candidate for use in high-level audio stages.
The INA217 is available in the same DIP-8 and SOL-16 wide
body packages and pin outs as the SSM2017. For a smaller
package, see the INA163 in SO-14 narrow. The INA217 is
specified over the temperature range of –40°C to +85°C.
V+
7
INA217
2
VIN–
6kΩ
6kΩ
A1
1
RG1
5kΩ
5kΩ
6
A3
VOUT
10kΩ
G = 1 +
RG
8
3
RG2
VIN
6kΩ
6kΩ
A2
+
4
5
V–
REF
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.
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.
Copyright © 2002, Texas Instruments Incorporated
www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
Supply Voltage, V+ to V–.................................................................. ±18V
Signal Input Terminals, Voltage(2) .................. (V–) – 0.5V to (V+) + 0.5V
Current(2) .................................................... 10mA
Output Short-Circuit(3) .............................................................. Continuous
Operating Temperature ..................................................–55°C to +125°C
Storage Temperature .....................................................–55°C to +150°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) Input terminals are diode-clamped to the power-supply
rails. Input signals that can swing more than 0.5V beyond the supply rails
should be current limited to 10mA or less. (3) Short-circuit to ground, one
amplifier per package.
PACKAGE/ORDERING INFORMATION
SPECIFIED
PACKAGE
DESIGNATOR(1)
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
PRODUCT
PACKAGE-LEAD
INA217
"
SOL-16
"
DW
"
–40°C to +125°C
"
INA217
"
INA217AIDWT
INA217AIDWR
INA217AIP
Tape and Reel, 250
Tape and Reel, 1000
Rails, 50
INA217
DIP-8
P
–40°C to +125°C
INA217
NOTES: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
PIN CONFIGURATIONS
Top View
NC
RG1
NC
1
2
3
4
5
6
7
8
16 NC
15 RG2
14 NC
13 V+
RG1
1
2
3
4
8
7
6
5
RG2
V+
VIN–
VIN–
VIN+
12 NC
11 VOUT
10 REF
VIN+
VOUT
REF
NC
V–
V–
DIP-8
NC
9
NC
SOL-16
NC = No Internal Connection
INA217
2
SBOS247A
www.ti.com
ELECTRICAL CHARACTERISTICS: VS = ±15V
Boldface limits apply over the specified temperature range, TA = –40°C to +85°C.
TA = +25°C, RL = 2kΩ, VS = ±15V, unless otherwise noted.
INA217
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GAIN EQUATION
Range
Gain Error, G = 1
G = 10
G = 1 + 10k/RG
1 to 10000
±0.1
V/V
%
%
±0.25
±0.7
±0.2
G = 100
±0.2
%
G = 1000
±0.5
%
Gain Temp Drift Coefficient, G = 1
G > 10
Nonlinearity, G = 1
G = 100
±3
±40
±0.0003
±0.0006
±10
±100
ppm/°C
ppm/°C
% of FS
% of FS
INPUT STAGE NOISE
Voltage Noise
RSOURCE = 0Ω
f
O = 1kHz
1.3
1.5
3.5
nV/√Hz
nV/√Hz
nV/√Hz
fO = 100Hz
fO = 10Hz
Current Noise
f
O = 1kHz
0.8
90
pA/√Hz
nV/√Hz
OUTPUT STAGE NOISE
Voltage Noise, fO = 1kHz
INPUT OFFSET VOLTAGE
Input Offset Voltage
vs Temperature
VCM = VOUT = 0V
50 + 2000/G
1 + 20/G
1 + 50/G
250 + 5000/G
3 + 200/G
µV
µV/°C
µV/V
TA = TMIN to TMAX
vs Power Supply
V
S = ±4.5V to ±18V
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
V
IN+ – VIN– = 0V
(V+) – 4
(V–) + 4
70
(V+) – 3
(V–) + 3
80
V
V
dB
dB
VIN+ – VIN– = 0V
Common-Mode Rejection, G = 1
VCM = ±11V, RSRC = 0Ω
G = 100
100
116
INPUT BIAS CURRENT
Initial Bias Current
vs Temperature
Initial Offset Current
vs Temperature
2
12
1
µA
nA/°C
µA
10
0.1
0.5
nA/°C
INPUT IMPEDANCE
Differential
Common-Mode
60
60
2
2
MΩ pF
MΩ pF
DYNAMIC RESPONSE
Bandwidth, Small Signal, –3dB, G = 1
3.4
800
15
0.004
2
3.5
1
MHz
kHz
V/µs
%
µs
µs
G = 100
Slew Rate
THD+Noise, f = 1kHz
Settling Time, 0.1%
0.01%
G = 100
G = 100, 10V Step
G = 100, 10V Step
50% Overdrive
Overload Recovery
µs
OUTPUT
Voltage
R
L to GND
(V+) – 2
(V–) + 2
(V+) – 1.8
(V–) + 1.8
1000
V
V
pF
mA
Load Capacitance Stability
Short-Circuit Current
Continuous-to-Common
±60
POWER SUPPLY
Rated Voltage
Voltage Range
±15
±10
V
V
mA
±4.5
±18
±12
Current, Quiescent
I
O = 0mA
TEMPERATURE RANGE
Specification
Operating
DIP-8
SOL-16
–40
–40
+85
+125
°C
°C
°C
°C
θJA
85
90
NOTE: (1) Gain accuracy is a function of external RG.
INA217
SBOS247A
3
www.ti.com
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.
THD+N vs FREQUENCY
G = 1000
GAIN vs FREQUENCY
70
0.1
0.01
60
G = 1000
50
40
G = 100
G = 100
G = 10
30
20
G = 10
0.001
0.0001
10
0
G = 1
VO = 7Vrms
L = 10kΩ
G = 1
–10
–20
R
20
100
1k
Frequency (Hz)
10k 20k
10k
100k
Frequency (Hz)
1M
10M
10k
1M
NOISE VOLTAGE (RTI) vs FREQUENCY
CURRENT NOISE SPECTRAL DENSITY
10.0
1k
100
10
G = 1
1
G = 10
G = 1000
G = 500
G = 100
0.1
1
1
10
100
1k
10
100
1k
10k
Frequency (Hz)
Frequency (Hz)
POWER-SUPPLY REJECTION
vs FREQUENCY
CMR vs FREQUENCY
G = 1000
140
120
100
80
140
120
100
80
G = 100, 1000
G = 10
G = 1
G = 100
G = 10
G = 1
60
60
40
40
20
20
0
0
10
100
1k
10k
100k
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
INA217
4
SBOS247A
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
V+
SETTLING TIME vs GAIN
10
8
20V Step
(V+) – 2
(V+) – 4
0.01%
6
(V+) – 6
(V–) + 6
4
(V–) + 4
(V–) + 2
V–
2
0.1%
0
0
10
20
30
40
50
60
1
10
100
1000
Output Current (mA)
Gain
SMALL-SIGNAL TRANSIENT RESPONSE
(G = 1)
SMALL-SIGNAL TRANSIENT RESPONSE
(G = 100)
2.5µs/div
10µs/div
LARGE-SIGNAL TRANSIENT RESPONSE
(G = 1)
LARGE-SIGNAL TRANSIENT RESPONSE
(G = 100)
2.5µs/div
2.5µs/div
INA217
SBOS247A
5
www.ti.com
relatively high input bias current and input bias current noise.
As a result, the INA217 may not provide the best noise
performance with a source impedance greater than 10kΩ.
For source impedance greater than 10kΩ, other instrumen-
tation amplifiers may provide improved noise performance.
APPLICATIONS INFORMATION
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 Reference (pin 5)
should be a low-impedance connection. Resistance of a few
ohms in series with this connection will degrade the com-
mon-mode rejection of the INA217.
INPUT CONSIDERATIONS
Very low source impedance (less than 10Ω) can cause the
INA217 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 INA217. Although not shown in other
figures, this network can be used as needed with all applica-
tions shown.
GAIN-SET RESISTOR
Gain is set with an external resistor, RG, as shown in Figure 1.
The two internal 5kΩ feedback resistors are laser-trimmed to
5kΩ within approximately ±0.2%. The gain equation for the
INA217 is:
10,000
G = 1+
RG
The temperature coefficient of the internal 5kΩ resistors is
approximately ±25ppm/°C. Accuracy and TCR of the exter-
nal RG will also contribute to gain error and 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.
V+
47Ω
2
1
7
INA217
4
VIN
–
1.2µH
1.2µH
6
VO
8
3
5
VIN+
NOISE PERFORMANCE
47Ω
The INA217 provides very low-noise with low-source imped-
ance. Its 1.3nV/√Hz voltage noise delivers near-theoretical
noise performance with a source impedance of 200Ω. The
input stage design used to achieve this low noise, results in
V–
FIGURE 2. Input Stabilization Network.
V+
0.1µF
7
INA217
6kΩ
2
VIN–
6kΩ
A1
1
5kΩ
5kΩ
GAIN
(V/V)
RG
RG
A3
VOUT
(dB)
0
6
(Ω)
NC(1)
10000
2500
1111
526
204
101
50
6
1
2
5
10
20
10000
RG
G = 1 +
14
20
26
34
40
46
54
60
66
6kΩ
6kΩ
REF
5
8
3
A2
VIN+
50
100
200
500
1000
2000
4
0.1µF
20
10
5
V+
Sometimes Shown in
Simplified Form:
NOTE: (1) NC = No Connection.
V–
RG
INA217
VO
V–
FIGURE 1. Basic Circuit Connections.
6
INA217
SBOS247A
www.ti.com
OFFSET VOLTAGE TRIM
MICROPHONE AMPLIFIER
A variable voltage applied to pin 5, as shown in Figure 3, can
be used to adjust the output offset voltage. A voltage applied
to pin 5 is summed with the output signal. An op amp
connected as a buffer is used to provide a low impedance at
pin 5 to assure good common-mode rejection.
Figure 4 shows a typical circuit for a professional microphone
input amplifier. R1 and R2 provide a current path for conven-
tional 48V phantom power source for a remotely located
microphone. An optional switch allows phantom power to be
disabled. C1 and C2 block the phantom power voltage from
the INA217 input circuitry. Non-polarized capacitors should
be used for C1 and C2 if phantom power is to be disabled. For
additional input protection against ESD and hot-plugging,
four IN4148 diodes may be connected from the input to
supply lines.
V+
2
1
7
R4 and R5 provide a path for input bias current of the INA217.
Input offset current (typically 100nA) creates a DC differential
input voltage that will produce an output offset voltage. This
is generally the dominant source of output offset voltage in
this application. With a maximum gain of 1000 (60dB), the
output offset voltage can be several volts. This may be
entirely acceptable if the output is AC-coupled into the
subsequent stage. An alternate technique is shown in Figure 4.
An inexpensive FET-input op amp in a feedback loop drives
the DC output voltage to 0V. A2 is not in the audio signal path
and does not affect signal quality.
6
RG
INA217
VO
V+
8
3
5
4
100µA
150Ω
V–
OPA237
10kΩ
150Ω
100µA
Gain is set with a variable resistor, R7, in series with R6.
R6 determines the maximum gain. The total resistance,
R6 + R7, determines the lowest gain. A special reverse-log
taper potentiometer for R7 can be used to create a linear
change (in dB) with rotation.
V–
FIGURE 3. Offset Voltage Adjustment Circuit.
Phantom Power
+48V
+
47µF
R3
47kΩ
R1
6.8kΩ
R2
6.8kΩ
+15V
+15V
0.1µF
(1)
C1
1
2
(2)
R6
IN4148(4)
47µF
8Ω
+
Female XLR
Connector
7
3
+15V
60V
A1
INA217
6
VO
(1)
C2
IN4148(4)
47µF
5
–15V
+
4
(3)
1MΩ
R7
1.6kΩ
60V
0.1µF
Optional DC
output control loop.
R4
2.2kΩ
R5
2.2kΩ
0.1µF
–15V
A2
OPA137
–15V
NOTES: (1) Use non-polar capacitors if phantom power is to be
turned off. (2) R6 sets maximum gain. (3) R7 sets minimum gain.
(4) Optional IN4148 prevents damage due to ESD and hot-plugging.
FIGURE 4. Phantom-Powered Microphone Preamplifier.
INA217
SBOS247A
7
www.ti.com
PACKAGE DRAWINGS
DW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
16 PINS SHOWN
0.050 (1,27)
16
0.020 (0,51)
0.014 (0,35)
0.010 (0,25)
M
9
0.419 (10,65)
0.400 (10,15)
0.010 (0,25) NOM
0.299 (7,59)
0.291 (7,39)
Gage Plane
0.010 (0,25)
1
8
0° – 8°
0.050 (1,27)
0.016 (0,40)
A
Seating Plane
0.004 (0,10)
0.012 (0,30)
0.004 (0,10)
0.104 (2,65) MAX
PINS **
16
18
20
24
0.610
28
DIM
0.410
0.462
0.510
0.710
A MAX
A MIN
(10,41) (11,73) (12,95) (15,49) (18,03)
0.400
0.453
0.500
0.600
0.700
(10,16) (11,51) (12,70) (15,24) (17,78)
4040000 /E 08/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15).
D. Falls within JEDEC MS-013
INA217
8
SBOS247A
www.ti.com
PACKAGE DRAWINGS
P (R-PDIP-T8)
PLASTIC DUAL-IN-LINE
0.400 (10,60)
0.355 (9,02)
8
5
0.260 (6,60)
0.240 (6,10)
1
4
0.070 (1,78) MAX
0.325 (8,26)
0.300 (7,62)
0.020 (0,51) MIN
0.015 (0,38)
Gage Plane
0.200 (5,08) MAX
Seating Plane
0.010 (0,25) NOM
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.430 (10,92)
MAX
0.010 (0,25)
M
0.015 (0,38)
4040082/D 05/98
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
INA217
SBOS247A
9
www.ti.com
PACKAGE OPTION ADDENDUM
www.ti.com
3-Oct-2003
PACKAGING INFORMATION
ORDERABLE DEVICE
STATUS(1)
PACKAGE TYPE
PACKAGE DRAWING
PINS
PACKAGE QTY
INA217AIDWR
INA217AIDWT
INA217AIP
ACTIVE
ACTIVE
ACTIVE
SOIC
SOIC
PDIP
DW
DW
P
16
16
8
1000
250
50
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
IMPORTANT NOTICE
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enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
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and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
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