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AS1545 データシート(PDF) 1 Page - ams AG |
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AS1545 データシート(HTML) 1 Page - ams AG |
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1 / 34 page  AS1545 Dual, 12-Bit, 1MSPS, SAR ADC Dat a Sh eet www.austriamicrosystems.com Revision 1.00 1 - 34 1 General Description The AS1545 is a dual, 12-bit, 6-channel, 1 MSPS, high speed, successive approximation (SAR) analog-to- digital converters (ADCs). The AS1545 is designed to operate with a single +2.7V to +5.25V supply and a sampling rate of up to 1 MSPS. The device contains two ADCs, each preceded by a 6- channel multiplexer and a high-bandwidth track/hold amplifier. Data access is made via standard control inputs in support of wide range of microprocessors and DSPs. The device requires very low supply-current at the 1MSPS maximum sampling speed, and features flexible power-down modes to reduce power consumption at slower throughput rate. The AS1545 contains an internal 2.5V reference and integrated reference buffer that can be over driven when an external reference is required. Superior AC characteristics, low power consumption, and highly reliable packaging makes the AS1545 perfect for portable battery-powered remote sensors and data- acquisition devices. The AS1545 is available in a 32-lead TQFN package. Figure 1. Block Diagram 2 Key Features ! Sampling Rate: 1MSPS per ADC ! Dual 12-bit serial interface ! Software Configurable Analog Input Types: - 12-Channel Single-Ended - 6-Channel Pseudo-Differential - 6-Channel Fully Differential ! Internal +2.5V Reference or External: 1V to VDD ! Rail to Rail Common Mode Input Range ! Low-Power Consumption - 15mW max. at 1MSPS with 2.7V supplies - 37mW max. at 1MSPS with 5.25V supplies ! Dual conversion with read at 20 MHz SCLK ! Single-Supply Operation: +2.7V to +5.25V ! Motor Control Registers: Difference of Inputs, Quadrature Signal Phases, Direction and Step Down Counter ! 32-lead TQFN Package 3 Applications The device is ideal for motor control like encoder feed- back or current sense, motion control such as robotics, sonar, or for any other radio frequency identification. BIN 1 BIN 2 BIN 3 BIN 4 BIN 5 AIN 0 AIN 1 AIN 2 AIN 3 AIN 4 AIN 5 BIN 0 Control Logic and System Control Registers 12-Bit SAR and A/D Conversion Control REF_SELECT 12-Bit SAR and A/D Conversion Control BUF BUF T/H T/H MUX REF MUX OutPut Drivers OutPut Drivers REFA AVDD DVDD SCLK CSN RANGE DOUTA SGL/DIFF A0 A1 A2 VDRIVE DOUTB DGND DGND REFB AGND AGND AGND System Control Registers |
同様の部品番号 - AS1545 |
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同様の説明 - AS1545 |
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