ADG738BRU Power Management IC CMOS, Low Voltage, 3-Wire
Serially-Controlled, Matrix Switches
FEATURES
3-wire serial interface
2.7 V to 5.5 V single supply
2.5 Ω on resistance
0.75 Ω on-resistance flatness
100 pA leakage currents
Single 8-to-1 multiplexer ADG738
Dual 4-to-1 multiplexer ADG739
Power-on reset
TTL/CMOS-compatible
Qualified for automotive applications
APPLICATIONS
Data acquisition systems
Communication systems
Relay replacement
Audio and video switching
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.
FUNCTIONAL BLOCK DIAGRAMS
Figure 1.
Figure 2.
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 input shift register, DOUT, enables a
number of these parts to be daisy-chained. On power-up, the
internal input 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 demultiplexing 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.
PRODUCT HIGHLIGHTS
1. 3-Wire Serial Interface.
2. Single Supply Operation. The ADG738/ADG739 are fully specified
and guaranteed with 3 V and 5 V supply rails.
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.
| Product Attributes | Select All |
| Categories | Integrated Circuits (ICs) |
| | Interface - Analog Switches, Multiplexers, Demultiplexers |
| Manufacturer | Analog Devices Inc. |
| Series | - |
| Packaging | Tube |
| Part Status | Active |
| Switch Circuit | - |
| Multiplexer/Demultiplexer Circuit | 0.334027778 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 4.5 Ohm |
| Channel-to-Channel Matching (ΔRon) | - |
| Voltage - Supply, Single (V+) | 2.7 V ~ 5.5 V |
| Voltage - Supply, Dual (V±) | - |
| Switch Time (Ton, Toff) (Max) | 20ns, 10ns (Typ) |
| -3db Bandwidth | 65MHz |
| Charge Injection | 3pC |
| Channel Capacitance (CS(off), CD(off)) | 13pF, 85pF |
| Current - Leakage (IS(off)) (Max) | 100pA |
| Crosstalk | -75dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
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