ADG739 AD [Analog Devices], ADG739 Datasheet

no-image

ADG739

Manufacturer Part Number
ADG739
Description
CMOS, Low-Voltage, 3-Wire Serially-Controlled, Matrix Switches
Manufacturer
AD [Analog Devices]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADG739BRUZ
Manufacturer:
AD
Quantity:
20 000
a
GENERAL DESCRIPTION
The ADG738 and ADG739 are CMOS analog matrix switches
with a serially-controlled 3-wire interface. The ADG738 is an
8-channel matrix switch, while the ADG739 is a dual 4-channel
matrix switch. On resistance is closely matched between switches
and very flat over the full signal range.
The ADG738 and ADG739 utilize a 3-wire serial interface that
is compatible with SPI™, QSPI™, MICROWIRE™, and some
DSP interface standards. The output of the shift register DOUT
enables a number of these parts to be daisy-chained. On power-up,
the internal shift register contains all zeros and all switches
are in the OFF state.
Each switch conducts equally well in both directions when on,
making these parts suitable for both multiplexing and demulti-
plexing applications. As each switch is turned on or off by a
separate bit, these parts can also be configured as a type of switch
array, where any, all, or none of the eight switches may be closed
at any time. The input signal range extends to the supply rails.
All channels exhibit break-before-make switching action,
preventing momentary shorting when switching channels.
The ADG738 and ADG739 are available in 16-lead TSSOP
packages.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corporation.
Serially-Controlled, Matrix Switches
PRODUCT HIGHLIGHTS
1. 3-Wire Serial Interface.
2. Single Supply Operation. The ADG738 and ADG739 are
3. Low On Resistance, 2.5 Ω typical.
4. Any configuration of switches may be on or off at any one time.
5. Guaranteed Break-Before-Make Switching Action.
6. Small 16-lead TSSOP Package.
fully specified and guaranteed with 3 V and 5 V supply rails.
S1
S8
SCLK
CMOS, Low-Voltage, 3-Wire
INPUT SHIFT
ADG738
REGISTER
FUNCTIONAL BLOCK DIAGRAMS
DIN SYNC
RESET
ADG738/ADG739
DOUT
D
S1A
S4A
S1B
S4B
SCLK
INPUT SHIFT
ADG739
REGISTER
DIN
SYNC
DA
DB
DOUT

Related parts for ADG739

ADG739 Summary of contents

Page 1

... On resistance is closely matched between switches and very flat over the full signal range. The ADG738 and ADG739 utilize a 3-wire serial interface that is compatible with SPI™, QSPI™, MICROWIRE™, and some DSP interface standards. The output of the shift register DOUT enables a number of these parts to be daisy-chained ...

Page 2

... S C (OFF) D ADG738 ADG739 (ON ADG738 ADG739 POWER REQUIREMENTS I DD NOTES 1 Temperature range is as follows: B Version: –40°C to +85°C. 2 Guaranteed by design, not subject to production test. Specifications subject to change without notice 10%, GND = 0 V, unless otherwise noted.) ...

Page 3

... MHz typ 100 MHz typ 13 pF typ 85 pF typ 42 pF typ 96 pF typ 48 pF typ µA typ 10 µA max 20 ADG738/ADG739 Test Conditions/Comments mA Test Circuit ...

Page 4

... ADG738/ADG739 TIMING CHARACTERISTICS Parameter Limit MIN MAX f 30 SCLK 4 NOTES 1 See Figure 1. 2 All input signals are specified with (10 kΩ. ...

Page 5

... Scale) (Not to Scale S3A S4A ORDERING GUIDE Package Description Thin Shrink Small Outline Package (TSSOP) Thin Shrink Small Outline Package (TSSOP) ADG738/ADG739 16 DOUT 15 GND S1B 12 S2B 11 S3B 10 S4B 9 DB Package Option RU-16 RU-16 ...

Page 6

... Whichever Occurs First Peak Current 100 mA (Pulsed at 1 ms, 10% Duty Cycle max) Continuous Current, Each Continuous Current D, ADG739 . . . . . . . . . . . . . . . . . 80 mA Continuous Current D, ADG738 . . . . . . . . . . . . . . . . 120 mA Operating Temperature Range Industrial (B Version –40°C to +85°C Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150° ...

Page 7

... Typical Performance Characteristics–ADG738/ADG739 DRAIN OR SOURCE VOLTAGE – 0. 0. (ON) D 0.04 0.00 I (OFF) S –0.04 I (OFF) D –0.08 –0. – Volts ...

Page 8

... OFF DD 0 –40 – TEMPERATURE – ADG738 –5 ADG739 –10 –15 –20 30k 100k 1M 10M 100M FREQUENCY – –20 –40 –60 –80 –100 –120 30k 100k 1M 10M 100M FREQUENCY – ...

Page 9

... SBUF register is arranged correctly as the switch expects MSB first. When data transmitted to the Matrix Switch, P3.3 is taken low. Data on RXD is clocked out of the microcontroller on the rising edge of TXD and is valid on the falling edge result no glue logic is required between the ADG738/ADG739 and microcontroller interface. 80C51/80L51* DB0 (LSB) S2 ...

Page 10

... The dual 4-channel ADG739 multiplexer can be used to multiplex a single chip select line in order to provide chip selects for up to four devices on the SPI bus. Figure 19 illustrates the ADG739 in such a typical configuration. All devices receive the same serial clock and serial data, but only one device will receive the SYNC signal at any one time ...

Page 11

... S8 GND ADG738 THRU OUT C R GND L L 35pF 300 * SIMILAR CONNECTION FOR ADG739 V DD ADG738 INPUT LOGIC * SIMILAR CONNECTION FOR ADG739 TEST CIRCUITS D (OFF SYNC 50% 50 OUT 90% t OFF ...

Page 12

... ADG738/ADG739 ADG738 GND S * SIMILAR CONNECTION FOR ADG739 CHANNEL-TO-CHANNEL CROSSTALK = 20LOG SEATING V OUT *SIMILAR CONNECTION FOR ADG739 S1 IS SWITCHED OFF FOR OFF ISOLATION MEASUREMENTS ( AND ON FOR BANDWIDTH MEASUREMENTS 10 OUT S OFF ISOLATION = 20LOG INSERTION LOSS = 20LOG OUTLINE DIMENSIONS Dimensions shown in inches and (mm) ...

Related keywords