AFE5851 具有 ADC 的 16 通道 VGA

AFE5851 同类产品

• AFE5801 - 器件与被比较器件具有相同的功能，但并不是引脚对引脚等效，也有可能参数不相同。 Same functionality as AFE5851 with 8-channel and 65 MSPS max channel sample rate.

AFE5851 说明

The AFE5851 is an analog front-end targeting applications where the power and level of integration are critical. The device contains 16 variable gain amplifiers (VGA), followed by an octal high speed (up to 65 MSPS) analog to digital converter (ADC).

Each of the 16 single ended inputs is buffered, accepts up to 1VPP maximum input swing and it is followed by a VGA with a gain range from -5dB to 31dB. The VGA gain is digitally controlled and the gain curves versus time can be stored in memory, integrated within the device using the serial interface.

A selectable clamping and anti-alias low pass filter (with 3dB attenuation at 7.5, 10 or 14MHz) is also integrated between the VGA and ADC for every channel. The VGA/anti-alias filter outputs are differential (limited to 2 VPP) and drive the on-board 12-bit 65MSPS ADC that is shared between two VGAs to optimize the power dissipation.

	AFE5801	AFE5804	AFE5805	AFE5851
Input Voltage Noise(Typ)(nV/rtHz)	5.5	1.23	0.85	5.5
Input Range(Typ)(mVpp)	2000	280	250	1000
Power Dissipation(Typ)(mW)	58	101	122	39
Gain Control Range(Typ)(dB)	36	46	46	36
Total Max Gain(Typ)(dB)	31	49	50	31
HD2 Distortion(Typ)(dB)	-75	-45	-45	-55
Overload Recovery(clock cycle)	1	1	1	1
Gain Error(Typ)(dB)	+/-0.5	+/-0.5	+/- 0.5	+/-0.5
Resolution(Bits)	12	12	12	12
Number of Channels	8	8	8	16

AFE5851 特性

• 16 Variable Gain Amplifiers (VGA)
  • 16 Single-Ended Buffered Inputs With 1VPP Maximum Swing
  • 5.5nV/Hz VCA Input Noise (31dB Gain).
  • Variable Gain -5dB to 31dB With 0.125dB Steps
  • Digital Gain Control
• 3rd Order Anti-Aliasing Filter With Programmable Cut-Off Frequency (7.5, 10 and 14MHz).
• Clamping
• Analog-to-Digital Converter (ADC)
  • Octal channel 12-bit, 65 MSPS
  • 32.5 MSPS Maximum per Input Channel
  • 2 VGA Outputs Alternately Sampled by Each ADC
  • Internal and External Reference Support
  • No External Decoupling Required for References
  • Serial LVDS Outputs
• 1.8V and 3.3V Supply
• 39 mW Total Power per Channel at 32.5 MSPS
• 64-QFN Package (9mm × 9mm)
• APPLICATIONS
  • Imaging: Ultrasound, PET

AFE5851 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
AFE5851IRGCR	ACTIVE	-40 to 85	86.00 | 1ku	VQFN (RGC) | 64	2000 | LARGE T&R	AFE5851
AFE5851IRGCT	ACTIVE	-40 to 85	86.00 | 1ku	VQFN (RGC) | 64	250 | SMALL T&R	AFE5851

AFE5851 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
AFE5851IRGCR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		AFE5851IRGCR
AFE5851IRGCT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		AFE5851IRGCT

AFE5851 应用技术支持与电子电路设计开发资源下载

1. AFE5851 数据资料 dataSheet 下载.PDF
2. TI 德州仪器模拟前端 AFE产品选型与价格参考 . xls
3. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
4. 所选封装材料的热学和电学性质 (PDF 645 KB)
5. 高速数据转换 (PDF 1967 KB)
6. 触摸屏系统中的校准 (PDF 393 KB)
7. Using a touch-screen controller’s auxiliary inputs (PDF 149 KB)
8. Q4 2007 Issue Analog Applications Journal (PDF 325 KB)
9. Reducing Analog Input Noise in Touch Screen Systems (PDF 535 KB)
10. Operation Schemes of Touch Screen Controllers (PDF 846 KB)
11. Apply TI TSC for Various and Multiple Functions (PDF 316 KB)
12. How to Use TI's 4-Wire TSC to Control an 8-Wire Resistive Touch Screen (PDF 271 KB)
13. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
14. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
15. Principles of Data Acquisition and Conversion (PDF 50 KB)
16. Interleaving Analog-to-Digital Converters (PDF 64 KB)
17. What Designers Should Know About Data Converter Drift (PDF 95 KB)
18. Touch Screen Controller Tips (PDF 86 KB)
19. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
20. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

AFE5851 工具与软件

名称	型号	公司	工具/软件类型
AFE5851EVM 评估模块	AFE5851EVM	Texas Instruments	开发电路板/EVM
TSW1250EVM 高速 LVDS 解串器和分析系统	TSW1250EVM	Texas Instruments	开发电路板/EVM