TMC2249A データシートの表示（PDF） - Raytheon Company

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TMC2249A

Digital Mixer 12 x 12 bit, 60 MHz

Raytheon Company 

PRODUCT SPECIFICATION

TMC2249A

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

27014B

Figure 1. Equivalent Digital Input Circuit

GND

27011B

Figure 2. Equivalent Digital Output Circuit

tENA

OE

tDIS 0.5V

Three-State

Outputs

High Impedance

0.5V

2.0V

0.8V

7048A

Figure 3. Threshold Levels for Three-State Measurement

7

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