ADS8484 - 具有基准电压、伪双极和全差动输入的 18 位 1.25MSPS 并行 ADC

ADS8484是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，ADS8484是具有基准电压、伪双极和全差动输入的 18 位 1.25MSPS 并行 ADC，本站介绍了ADS8484的封装应用图解、特点和优点、功能等，并给出了与ADS8484相关的TI元器件型号供参考。

ADS8484 - 具有基准电压、伪双极和全差动输入的 18 位 1.25MSPS 并行 ADC - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADS8484 is an 18-bit, 1.25-MSPS A/C converter with an internal 4.096-V reference and a pseudo-bipolar, fully differential input. The device includes a 18-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8484 offers a full 18-bit interface, a 16-bit option where data is read using two read cycles, or an 8-bit bus option using three read cycles.

The ADS8484 is available in a 48-lead 7x7 QFN package and is characterized over the industrial -40°C to 85°C temperature range.

产品特性

1.25-MHz Sample Rate
±1.5 LSB Typ, ±2.5 LSB Max INL
+0.8/-0.6 LSB Typ, +1.5/-1 LSB Max DNL
18-Bit NMC Ensured Over Temperature
±0.5-mV Offset Error
TBD-PPM/°C Offset Error Drift
±0.1 %FSR Gain Error
±TBD-PPM/°C Gain Error Drift
99dB SNR, -117db THD, 120dB SFDR
Zero Latency
Low Power: 235 mW Typ at 1.25 MSPS
Pseudo-Bipolar Fully Differential Input Range: Vref to -Vref
Onboard Reference with TBD PPM/°C Drift
Onboard Reference Buffer
High-Speed Parallel Interface
Wide Digital Supply 2.7 V to 5.25 V
8-/16-/18-Bit Bus Transfer
48-Pin 7x7 QFN Package
APPLICATIONS
- Medical Instruments
- Optical Networking
- Transducer Interface
- High Accuracy Data Acquisition Systems
- Magnetometers

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