TMC2249A-1 查看數據表（PDF） - Fairchild Semiconductor

零件编号

产品描述 (功能)

比赛名单

TMC2249A-1

Digital Mixer 12 x 12 Bit, 60 MHz

Fairchild Semiconductor 

TMC2249A

PRODUCT SPECIFICATION

Table 1. Data Formats and Bit Weighting

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 BIT

-211 210 29 28 27 26 25 24 23 22 21 20 DATA (A11-0-D11-0)

-223 222 221 220 219 218 217 216 215 214 213 212 211 210 29 28 CASCADE INPUT (CAS15-0)

SUM (S15-0)

215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20 LSW

-223 222 221 220 219 218 217 216 215 214 213 212 211 210 29 28 MSW

Notes:

A minus sign indicates the two’s complement sign bit.

RND adds 1 to the 27 position if ACC is low.

Equivalent Circuits and Threshold

Levels

VDD

VDD

p

Data or

Control

Input

n

p

Output

n

GND

Figure 1. Equivalent Digital Input Circuit

GND

Figure 2. Equivalent Digital Output Circuit

OE

Three-State

Outputs

tDIS 0.5V

tENA

High Impedance

0.5V

2.0V

0.8V

Figure 3. Threshold Levels for Three-State Measurement

REV. 1.0.2 7/6/00

7

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