DG441

Monolithic, Quad SPST, CMOS Analog Switches

Product Status: Mass Production

OVERVIEW

The DG441 and DG442 monolithic CMOS analog switches are drop-in replacements for the popular DG201A and DG202 series devices. They include four independent single pole single throw (SPST) analog switches, TTL and CMOS compatible digital inputs, and a voltage reference for logic thresholds.

These switches feature lower analog ON resistance (<85Ω) and faster switch time (tON <250ns) compared to the DG201A and DG202. Charge injection has been reduced, simplifying sample and hold applications.

The improvements in the DG441 series are made possible by using a high voltage silicon-gate process. An epitaxial layer prevents the latch-up associated with older CMOS technologies. The 44V maximum voltage range permits controlling 40VP-P signals. Power supplies may be single ended from +5V to +34V, symmetrical supplies from ±5V to ±22V or asymmetrical supplies limited to a maximum differential voltage of 44V with a V+ max of 34V or a V- max of -25V.

The four switches are bilateral, equally matched for AC or bidirectional signals. The ON resistance variation with analog signals is quite low over a ±5V analog input range. The switches in the DG441 and DG442 are identical, differing only in the polarity of the selection logic.

KEY FEATURES

  • ON Resistance (Max) 85Ω
  • Low Power Consumption (PD) <1.6mW
  • Fast Switching Action
  • tON (Max) 250ns
  • tOFF (Max, DG441) 120ns
  • Low Charge Injection
  • Upgrade from DG201A, DG202
  • TTL, CMOS Compatible
  • Single or Split Supply Operation
  • Pb-Free Plus Anneal Available (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
DG441
Basic Information
Production Status
Mass Production
# of Devices/ Channels
4
Switch or MUX
Switch
Configuration
NC
Type of Switch
SPST
RDS (ON)
50 Ω
Leakage
0.08 nA
Source Cap (pf)
4
IS
15 µA
VCC (Single) (min) (V)
5
VCC (Single) (max) (V)
34
Qualification Level
Standard
TON (ns)
150
TOFF (ns)
90
Charge Injection (pC)
1
Drain Capacitance
16 pF
Dual Supply Voltage (Min)
±5 V
Dual Supply Voltage (Max)
±20 V
Supply Voltage Vcc Range (V)
+5 to +34, ±5 to ±20
Can Sample
YES
Temperature Range
-40 to +85

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