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AS1504 Datasheet(PDF) 1 Page - ams AG |
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AS1504 Datasheet(HTML) 1 Page - ams AG |
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1 / 17 page  AS1504, AS1505 Octa l 8-Bit Programmable Low-Power DACs with Shutdown and Mid-Scale Reset austriamicrosystems Dat a Sh eet www.austriamicrosystems.com Revision 1.0 1 - 17 1 General Description The AS1504/AS1505 are low-power (5µA @ 5V) individ- ually programmable 8-channel, 8-bit resolution digital-to- analog converters. All eight DACs share a common ref- erence-voltage input making them ideal for applications where adjustments start at a nominal voltage. The devices feature a low-power shutdown reference input current (5µA) that enables the devices to maintain individual DAC latch settings during shutdown until nor- mal operation is resumed. The devices are controlled via a standard 3-wire serial interface. Data is shifted into the DACs via the internal serial-to-parallel shift register. The AS1504/AS1505 are available in a 16-pin SOIC-150 package. Figure 1. Block Diagram 2 Key Features ! 8 Individually-Controlled DACs ! Replaces 8 Potentiometers ! Standard 3-Wire Serial Interface ! Single-Supply Operation: +3 to +5V ! Mid-Scale Reset Pin (AS1504) ! Separate VREFL Range Setting (AS1505) ! Shutdown Mode: ≤25µW (IDD and IREF) ! Power-On Reset ! 16-pin SOIC-150 Package 3 Applications The devices are ideal for video amplifier gain control, video equipment voltage-controlled frequencies and bandwidths, CRT display geometric corrections and automatic adjustments, or any other space-limited DAC application with low power-consumption requirements. Table 1. Standard Products Model Functionality AS1504 Mid-Scale Reset Pin AS1505 Separate VREFL Range Settings DAC Select DAC1 GND VDD SDI CLK CSN AS1504 Only SHDNN VREFH VREFL VOUT VREFL VREFH OUT1 DAC8 VREFH VREFL VOUT OUT8 Address 11-Bit Serial Latch CK RSN D AS1504/ AS1505 8 8-Bit Latch CK RSN 1 8 8-Bit Latch CK RSN 3 8 8 AS1505 Only RSN |
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