ADC3541 datasheet(19/68 Pages) TI1

tên linh kiện	ADC3541

Giải thích chi tiết về linh kiện	ADC354x 14-bit, 10-MSPS to 65-MSPS, Low-noise, Ultra-low Power ADC

PDF	68 Pages

Scroll/Zoom	100%

nhà sản xuất	TI1 [Texas Instruments]

Trang chủ	http://www.ti.com

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7.3 Feature Description

7.3.1 Analog Input

The analog inputs of ADC354x are intended to be driven differentially. Both AC coupling and DC coupling of the

analog inputs is supported. The analog inputs are designed for an input common mode voltage of 0.95 V which

must be provided externally on each input pin. DC-coupled input signals must have a common mode voltage that

meets the device input common mode voltage range.

The equivalent input network diagram is shown in Figure 7-1. All four sampling switches, on-resistance shown in

red, are in same position (open or closed) simultaneously.

AVDD

0.6 pF

GND

2 nH

xINP/

xINM

125

1.4 pF

GND

0.15 pF

GND

0.32 pF

0.6 pF

GND

0.7 pF

GND

6.4 pF

1.6 pF

GND

Sampling Switch

Figure 7-1. Equivalent Input Network

7.3.1.1 Analog Input Bandwidth

Figure 7-2 shows the analog full power input bandwidth of the ADC. The -3 dB bandwidth is approximately TBD

MHz and the useful input bandwidth with good AC performance is approximately 120 MHz.

FPO

Figure 7-2. ADC Analog Input bandwidth (-3 dB)

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ADC3541

SBAS840 – JULY 2020

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ADC3541 bảng dữ liệu(PDF) 19 Page - Texas Instruments