SSM2143 Analog Devices, SSM2143 Datasheet

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SSM2143

Manufacturer Part Number
SSM2143
Description
-6 dB Differential Line Receiver
Manufacturer
Analog Devices
Datasheet

Specifications of SSM2143

Case
SOP8
Dc
02+

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a
GENERAL DESCRIPTION
The SSM2143 is an integrated differential amplifier intended to
receive balanced line inputs in audio applications requiring a
high level of immunity from common-mode noise. The device
provides a typical 90 dB of common-mode rejection (CMR),
which is achieved by laser trimming of resistances to better than
0.005%.
Additional features of the device include a slew rate of 10 V/ s
and wide bandwidth. Total harmonic distortion (THD) is less
than 0.004% over the full audio band, even while driving low
impedance loads. The SSM2143 input stage is designed to
handle input signals as large as +28 dBu at G = 1/2. Although
primarily intended for G = 1/2 applications, a gain of 2 can be
realized by reversing the +IN/–IN and SENSE/REFERENCE
connections.
When configured for a gain of 1/2, the SSM2143 and SSM2142
Balanced Line Driver provide a fully integrated, unity gain
solution to driving audio signals over long cable runs. For
similar performance with G = 1, see SSM2141.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
High Common-Mode Rejection
Ultralow THD: 0.0006% typ @ 1 kHz
Fast Slew Rate: 10 V/ s typ
Wide Bandwidth: 7 MHz typ (G = 1/2)
Two Gain Levels Available: G = 1/2 or 2
Low Cost
DC: 90 dB typ
60 Hz: 90 dB typ
20 kHz: 85 dB typ
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
–IN
+IN
FUNCTIONAL BLOCK DIAGRAM
12k
12k
Epoxy Mini-DIP (P Suffix)
REF
–IN
+IN
V–
PIN CONNECTIONS
1
4
2
3
SOIC (S Suffix)
SSM2143
NC = NO CONNECT
(NOT TO SCALE)
OP-482
SSM2143
TOP VIEW
–6 dB Differential
and
6k
6k
Line Receiver
8
7
6
5
NC
SENSE
V+
V
SSM2143
OUT
SENSE
V
V–
V+
REFERENCE
OUT
Fax: 617/326-8703

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SSM2143 Summary of contents

Page 1

... G = 1/2 applications, a gain of 2 can be realized by reversing the +IN/–IN and SENSE/REFERENCE connections. When configured for a gain of 1/2, the SSM2143 and SSM2142 Balanced Line Driver provide a fully integrated, unity gain solution to driving audio signals over long cable runs. For similar performance with see SSM2141 ...

Page 2

... IOS CM CMR RTO kHz f = 400 kHz PSR IVR Common Mode Differential Model SSM2143P SSM2143S* – +85 C *Contact sales office for availability. –2– + 1/2, unless otherwise noted Min Typ Max 0.0006 –107.3 +28 3.5 –1.2 0.05 +1 110 300 +45, –20 –0.1 0.03 0.1 ...

Page 3

... Figure 5. Dynamic Intermodulation Distortion, DIM-100 ( 100 REV 100 200 mV, Figure 2. Large Signal Transient Response ( 1/ Figure 4. Headroom ( with 80 kHz Filter) 1.0 0.1 0.01 0.001 0.0001 100 Figure 6. THD+N vs. Load (V 1 kHz Sine, 80 kHz Filter) –3– SSM2143 +24 dBu + 10k LOAD RESISTANCE – rms, with S IN 100k ...

Page 4

... SSM2143 Figure 7. Closed-Loop Gain vs. Frequency kHz (Gain of 1/2 Normalized to 0 dB) 180 135 –45 –90 –135 –180 10k 100k 100 1k FREQUENCY – Hz Figure 9. Closed-Loop Phase vs. Frequency 140 120 100 80 60 +PSRR 100 1k 10k FREQUENCY – Hz Figure 11. Power Supply Rejection vs. Frequency 15V + –10 – ...

Page 5

... Figure 16. Voltage Noise Density vs. Frequency 1s 100 –0 Figure 18. Voltage Noise from 0 kHz to 1 kHz and T = +25 C, using an external amplifier with a gain of 1000 –5– SSM2143 15V S 100 1k LOAD RESISTANCE – ±15V +25° 100 1k FREQUENCY – Hz 10ms 5mV 10k 10k ...

Page 6

... SSM2143 100 5mV Figure 19. Voltage Noise from 0 kHz to 10 kHz* 0.10 0.08 0.06 0.04 0.02 0 –25 25 –50 0 TEMPERATURE – C Figure 21. Gain Error vs. Temperature –50 – TEMPERATURE – C Figure 23. Supply Current vs. Temperature *The photographs in Figure 17 through Figure 19 were taken 1ms – –50 ...

Page 7

... INPUT ERRORS 1 – 12k R The main dc input offset error specified for the SSM2143 is the Input Offset Voltage. The Input Bias Current and Input Offset Current are not specified as for a normal operational amplifier. Because the SSM2143 has built-in resistors, any bias current related errors are converted into offset voltage errors ...

Page 8

... It can drive large capacitive loads on long cables making it ideal for transmitting balanced audio signals. When com- bined with an SSM2143 on the receiving end of the cable, the sys- tem maintains high common-mode rejection and ultralow THD. The SSM2142 is designed with a gain of +2 and the SSM2143 with a gain of 1/2, providing an overall system gain of unity ...

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