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ADC121S625 Arkusz danych(PDF) 1 Page - Texas Instruments |
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ADC121S625 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 31 page 1 2 3 4 5 6 7 8 CS VREF GND +IN -IN ADC121S625 +VA SCLK DOUT ADC121S625 www.ti.com SNAS294B – MAY 2005 – REVISED MARCH 2013 ADC121S625 12-Bit, 50 ksps to 200 ksps, Differential Input, Micro Power Sampling A/D Converter Check for Samples: ADC121S625 1 FEATURES DESCRIPTION The ADC121S625 is a 12-bit, 50 ksps to 200 ksps 2 • True Differential Inputs sampling Analog-to-Digital (A/D) converter that • Ensured Performance from 50ksps to 200ksps features a fully differential, high impedance analog • External Reference input and an external reference. While best performance is achieved with reference voltage • High AC Common-Mode Rejection between 500mV and 2.5V, the reference voltage can • SPI™/QSPI™/MICROWIRE/DSP Compatible be varied from 100mV to 2.5V, with a corresponding Serial Interface resolution between 49µV and 1.22mV. The output serial data is binary 2's complement, and APPLICATIONS is compatible with several standards, such as SPI™, • Automotive Navigation QSPI™, MICROWIRE, and with many common DSP • Portable Systems serial interfaces. The differential input, low power, automatic power down, and small size make the • Medical Instruments ADC121S625 ideal for direct connection to • Instrumentation and Control Systems transducers in battery operated systems or remote • Motor Control data acquisition applications. • Direct Sensor Interface Operating from a single +5V supply, the normal power consumption is reduced to a few nanowatts in KEY SPECIFICATIONS the power-down mode. The ADC121S625 is a pin- compatible superior replacement for the ADS7817 • Conversion Rate 50 to 200 ksps and is available in the VSSOP-8 package. Operation • Offset Error 0.4 LSB (typ) is ensured over the industrial temperature range of • Gain Error 0.05 LSB (typ) −40°C to +85°C and clock rates of 800 kHz to 3.2 MHz. • INL ± 1 LSB (max) • DNL ± 0.75 LSB (max) • CMRR 82 dB (typ) • Power Consumption – Active, 200 ksps 2.25 mW (typ) – Active, 50 ksps 1.33 mW (typ) – Power Down 60 nW (typ) Connection Diagram Figure 1. 8-Lead VSSOP See DGK Package 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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