SSM2161 Analog Devices, SSM2161 Datasheet

no-image

SSM2161

Manufacturer Part Number
SSM2161
Description
4-Channel, Clickless Serial Input Balance/Master Volume Control
Manufacturer
Analog Devices
Datasheet

Specifications of SSM2161

Case
SOP
Dc
00+

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
SSM2161
Manufacturer:
AD
Quantity:
19
Price:
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
SSM2161
Manufacturer:
MURATA
Quantity:
16 000
Price:
a
GENERAL DESCRIPTION
The SSM2160 and SSM2161 allow digital control of volume of
six and four audio channels, respectively, with a master level
control and individual channel controls. Low distortion VCAs
(Voltage Controlled Amplifiers) are used in the signal path. By
using controlled rate-of-change drive to the VCAs, the “click-
ing” associated with switched resistive networks is eliminated in
the Master control. Each channel is controlled by a dedicated
5-bit DAC providing 32 levels of gain. A master 7-bit DAC
feeds every control port giving 128 levels of attenuation. Step
sizes are nominally 1 dB and can be changed by external
resistors. Channel balance is maintained over the entire master
control range. Upon power-up, all outputs are automatically
muted. A three- or four-wire serial data bus enables interfacing
with most popular microcontrollers. Windows* software and an
evaluation board for controlling the SSM2160 are available.
The SSM2160 can be operated from single supplies of +10 V to
+20 V or dual supplies from 5 V to 10 V. The SSM2161 can
be operated from single supplies of +8.5 V to +20 V (for
automotive applications) or dual supplies from 4.25 V to
common voltage for single supply applications. Both models
come in P-DIP and SO packages. See the Ordering Guide for
more details.
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.
10 V. An on-chip reference provides the correct analog
FEATURES
Clickless Digitally Controlled Level Adjustment
7-Bit Master Control Gives 128 Levels of Attenuation
5-Bit Channel Controls Give 32 Levels of Gain
Master/Channel Step Size Set by External Resistors
100 dB Dynamic Range
Automatic Power On Mute
Excellent Audio Characteristics:
Single and Dual Supply Operation
APPLICATIONS
Home Theater Receivers
Surround Sound Decoders
Circle Surround* and AC-3* Decoders
DSP Soundfield Processors
HDTV and Surround TV Audio Systems
Automotive Surround Sound Systems
Multiple Input Mixer Consoles and Amplifiers
SSM2160: Six Channels
SSM2161: Four Channels
0.01% THD+N
0.001% IMD (SMPTE)
–80 dB Channel Separation
90 dB SNR
–90 dBu Noise Floor
Master/Balance Volume Controls
*Circle Surround is a registered trademark of Rocktron Corporation.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
AC-3 is a registered trademark of Dolby Labs, Inc. Windows is a regis-
tered trademark of Microsoft Corp.
WRITE
DATA
V
6- and 4-Channel, Serial Input
CLK
REF
LD
V+
V–
SHIFT REGISTER
FUNCTIONAL BLOCK DIAGRAM
SUPPLY AND
GENERATOR
ADDRESS
DECODER
REFERENCE
CHANNEL
CHANNEL
CHANNEL
CHANNEL
CHANNEL
CHANNEL
MASTER
POWER
AND
7-BIT
5-BIT
5-BIT
5-BIT
5-BIT
5-BIT
5-BIT
DAC
DAC
DAC
DAC
DAC
DAC
DAC
World Wide Web Site: http://www.analog.com
SSM2160/SSM2161
© Analog Devices, Inc., 1996
VCA
VCA
VCA
VCA
VCA
VCA
STEP SIZE
ADJUST
CH SET
MSTR SET
MSTR OUT
CH1 IN
CH2 IN
CH3 IN
CH4 IN
CH5 IN
CH6 IN
CH1 OUT
CH2 OUT
CH3 OUT
CH4 OUT
CH5 OUT
CH6 OUT

Related parts for SSM2161

SSM2161 Summary of contents

Page 1

... Windows* software and an evaluation board for controlling the SSM2160 are available. The SSM2160 can be operated from single supplies dual supplies from The SSM2161 can be operated from single supplies of +8 +20 V (for automotive applications) or dual supplies from 4. ...

Page 2

... Logic Thresholds High (1) Low (0) Input Current Clock Frequency Timing Characteristics POWER SUPPLIES Voltage Range SSM2160 SSM2161 SSM2160 SSM2161 Supply Current NOTES 1 Master = 0 dB; Channel = 0 dB. 2 Input level adjusted accordingly. 0 dBu = 0.775 V rms. 3 For other than 10 V supplies, maximum is V /4. S Specifications subject to change without notice. ...

Page 3

... CH 1 CLK DATA D7 0 MSB WRITE REV Figure 1. Timing Diagrams –3– SSM2160/SSM2161 Min Typ Max 200 200 50 75 100 250 250 Units ...

Page 4

... Epoxy DIP and SOIC SET AGND 2 19 MSTR OUT MSTR SET REF VOUT1 4 17 VOUT2 VIN1 5 16 VIN2 SSM2161 TOP VIEW VOUT3 6 15 VOUT4 (Not to Scale) VIN3 VIN4 7 14 WRITE 8 DATA CLK V– DGND 10 11 ...

Page 5

... S SM2160 SSM2161 Pin No. Pin No. Name AGND REF 4 4 CH1 OUT 5 5 CH1 CH3 OUT 7 7 CH3 IN 8 – CH5 OUT 9 – CH5 WRITE V– DGND 14 12 CLK 15 13 DATA 16 – CH6 IN 17 – ...

Page 6

... Performance Characteristics SSM2160/SSM2161 + 0dBu 10k 1 50pF L 0.1 0.01 0.001 –70 –60 –40 – GAIN – dB Figure 2. THD vs. Gain 0 + DUAL SUPPLY OPERATION V = 300mVrms@1kHz 10k , C = 50pF L L MASTER/CHANNEL = 0dB LPF: < 22kHz V = 12V S 0. 0.001 ...

Page 7

... SUPPLY VOLTAGE – Volts Figure 13 –7– SSM2160/SSM2161 – 12V S –20 VIN = –31dBu @ 1kHz – 100k L MASTER = 0dB –40 CHANNEL = 31dB –50 –60 –70 –80 –90 –100 – ...

Page 8

... The SSM2160 can be operated from dual supplies from and from single supplies from + +20 V. The SSM2161 can be operated from dual supplies from 4. for automotive applications and from single supplies from +8 + order to keep power dissipation to a minimum, use the minimum power supply voltages that will support the maximum input and output signal levels ...

Page 9

... "DON'T CARE" SHADED AREA IS DATA –9– SSM2160/SSM2161 0dB OUTPUT –127dB 31dB 0dB CHANNEL Data dB Hex Binary 0 7F 1111111 –127 00 0000000 +31 00 00000 +15 10 10000 0 1F 11111 ( desired). Increasing the ...

Page 10

... SSM2160/SSM2161 Serial Data Input Format The standard format for data sent to SSM2160 is an address byte followed by a data byte. This is depicted in the truth table, Figure 19. Two 8-bit bytes are required for each Master and each of the six channel updates. The first byte sent contains the address and is identified by the MSB being logic high ...

Page 11

... Mute is typically better than – relative dBu input. Due to design limitations, the individual channel muting results in increased signal distortion in the unmuted channels. Users should determine if this condition is acceptable in the particular application. and –11– SSM2160/SSM2161 is not needed C DNR = 0.5 127 from CH SET to V+. C 1.5 1 ...

Page 12

... SSM2160/SSM2161 DC Blocking and Frequency Response All internal signal handling uses direct coupled circuitry. Although the input and output dc offsets are small, dc blocking is required when the signal ground references are different. This will be the case if the source is from an op amp that uses dual power supplies (i ...

Page 13

... If installing the software from a diskette, and using Windows headphone will version 3.1 or later, select the RUN command from the FILE menu of the Program Manager. In the command line, type a:\setup and press return. If you downloaded the software to –13– SSM2160/SSM2161 +5V C2 100pF ...

Page 14

... SSM2160/SSM2161 your hard disk from the Analog Devices website to, say, C:\SSM2160, on the command line type C:\SSM2160\SETUP and press Return. The software will be automatically installed and a SSM2160 start-up icon will be displayed. Double-click the icon to start the application. Under the menu item “Port,” ...

Page 15

... SEATING 0.008 (0.204) PLANE 0.0118 (0.30) 0.0040 (0.10) SSM2161 20 0.325 (8.25) 0.195 (4.95) 0.300 (7.62) 0.115 (2.93) 1 0.130 (3.30) MIN PIN 1 0.015 (0.381) 0.008 (0.204) 0.0118 (0.30) 0.0040 (0.10) –15– SSM2160/SSM2161 24-Lead SOL (R-24) 0.6141 (15.60) 0.5985 (15.20 0.1043 (2.65) 0.0291 (0.74) 0.0926 (2.35) 0.0098 (0.25) 0.0500 (1.27) 8 0.0500 0.0192 (0.49) 0 0.0157 (0.40) SEATING (1.27) 0.0125 (0.32) 0.0138 (0.35) PLANE BSC 0 ...

Page 16

–16– ...

Related keywords