ADS8254 16 位 4 通道差动完整采集解决方案（ADC、REF和输入缓冲器）

	ADS8254	ADS8255	ADS8284
Resolution(Bits)	16	16	18
Sample Rate (max)	1MSPS	1MSPS	1MSPS
Architecture	SAR	SAR	SAR
SINAD(dB)	95.2	95.2	98.3
SNR(dB)	94	95	97.5
SNR(Typ)(dB)	95.4	95.4	98.4
SFDR(dB)	120	120	121
DNL(Max)(+/-LSB)	0.5	0.5	+1.5 / -1
INL(Max)(+/-LSB)	0.75	0.75	+/-2.5
No Missing Codes(Bits)	16	16	18
ENOB(Bits)	15.5	15.5	15.9
No. of Supplies	4	4	4
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	2.7	2.7	2.7
Logic Voltage DV/DD(Max)(V)	5.25	5.25	5.25
Input Configuration Range	+/-Vref	Vref	+/-Vref
Reference Mode	Int and Ext	Int and Ext	Int and Ext
Rating	Catalog	Catalog	Catalog
Pin/Package	64VQFN	64VQFN	64VQFN
# Input Channels	4	4	4
Operating Temperature Range (°C)			-40 to 85
Operating Temp Range(Celsius)	-40 to 85

The ADS8254 is a high-performance analog system-on-chip (SoC) device with an 16-bit, 1-MSPS A/D converter, 4-V internal reference, an on-chip ADC driver (OPA), and a 4-channel differential multiplexer. The channel count of the multiplexer and auto/manual scan modes of the device are user selectable.

The ADC driver is designed to leverage the very high noise performance of the differential ADC at optimum power usage levels.

The ADS8254 outputs a buffered reference signal for level shifting of a ±4-V bipolar signal with an external resistance divider. A Vref/2 output signal is available to set the common-mode of a signal conditioning circuit. The device also includes an 16-/8-bit parallel interface.

ADS8254 特性

1.0-MHz Sample Rate, Zero Latency at Full Speed
16-Bit Resolution
Supports Pseudo-Bipolar Differential Input Range: -4 V to +4 V with 2-V Common-Mode
Built-In Four Channel, Differential Ended Multiplexer; with Channel Count Selection and Auto/Manual Mode
On-Board Differential ADC Driver (OPA)
Buffered Reference Output to Level Shift Bipolar ±4-V Input with External Resistance Divider
Reference/2 Output to Set Common-Mode for External Signal Conditioner
16-/8-Bit Parallel Interface
SNR: 95.4dB Typ at 2-kHz I/P
THD: -118dB Typ at 2-kHz I/P
Power Dissipation: 331.25 mW at 1 MSPS
Internal Reference
Internal Reference Buffer
64-Pin QFN Package
APPLICATIONS
- Medical Imaging/CT Scanners
- Automated Test Equipment
- High-Speed Data Acquisition Systems
- High-Speed Closed-Loop Systems

ADS8254 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚
ADS8254IBRGCR	ACTIVE	-40 to 85	24.50 \| 1ku	VQFN (RGC) \| 64
ADS8254IBRGCT	ACTIVE	-40 to 85	26.35 \| 1ku	VQFN (RGC) \| 64
ADS8254IRGCR	ACTIVE	-40 to 85	18.50 \| 1ku	VQFN (RGC) \| 64
ADS8254IRGCT	ACTIVE	-40 to 85	20.35 \| 1ku	VQFN (RGC) \| 64