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DG401 Folha de dados(PDF) 5 Page - Maxim Integrated Products |
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DG401 Folha de dados(HTML) 5 Page - Maxim Integrated Products |
5 / 8 page Improved, Dual, High-Speed Analog Switches _______________________________________________________________________________________ 5 __________Applications Information _____________________Pin Description Figure 1. Overvoltage Protection Using External Blocking Diodes Operation with Supply Voltages Other than ±15V The DG401/DG403/DG405 switches operate with ±4.5V to ±20V bipolar supplies or with a +10V to +30V single supply. In either case, analog signals ranging from V+ to V- can be switched. The Typical Operating Characteristics graphs illustrate typical analog-signal and supply-voltage on-resistance variations. The usual on-resistance temperature coefficient is 0.5%/°C (typ). Logic Inputs These devices operate with a single positive supply or with bipolar supplies. They maintain TTL compatibility with supplies anywhere in the ±4.5V to ±20V range as long as VL = +5V. If VL is connected to V+ or another supply at voltages other than +5V, the devices will operate at CMOS-logic-level inputs. Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices. Always sequence V+ on first, followed by VL, V-, and logic inputs. If power-supply sequencing is not possible, add two small, external signal diodes in series with supply pins for overvoltage protection (Figure 1). Adding diodes reduces the analog-signal range to 1V below V+ and 1V below V-, without affect- ing low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed +44V. DG401 DIP/SO LCC NAME FUNCTION 1, 8 2, 10 D1, D2 Drain (Analog Signal) 2-7 1, 3-9, 11, 16 N.C. Not internally connected 9, 16 12, 20 S2, S1 Source (Analog Signal) 10, 15 13, 19 IN2, IN1 Digital Logic Inputs 11 14 V+ Positive Supply-Voltage Input—connected to substrate 12 15 VL Logic Supply-Voltage Input 13 17 GND Ground 14 18 V- Negative Supply-Voltage Input DG403 DIP/SO LCC NAME FUNCTION 1, 8, 3, 6 2, 10, 4, 8 D1-D4 Drain (Analog Signal) 2, 7 1, 3, 6, 9, 11, 16 N.C. Not internally connected 11 14 V+ Positive Supply-Voltage Input—connected to substrate 12 15 VL Logic Supply-Voltage Input 13 17 GND Ground 14 18 V- Negative Supply-Voltage Input DG405 DIP/SO LCC NAME FUNCTION 1, 8, 3, 6 2, 10, 4, 8 D1-D4 Drain (Analog Signal) 2, 7 1, 3, 6, 9, 11, 16 N.C. Not internally connected 11 14 V+ Positive Supply-Voltage Input—connected to substrate 12 15 VL Logic Supply-Voltage Input 13 17 GND Ground 14 18 V- Negative Supply Voltage V+ D V- S Vg 16, 9, 4, 5 20, 12, 5, 7, S1-S4 Source (Analog Signal) 10, 15 13, 19 IN2, IN1 Digital Logic Inputs 16, 9, 4, 5 20, 12, 5, 7, S1-S4 Source (Analog Signal) 10, 15 13, 19 IN2, IN1 Digital Logic Inputs |
Nº de peça semelhante - DG401 |
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Descrição semelhante - DG401 |
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