AD1859 datasheet(16/16 Pages) AD

16 / 16 page

REV. A

–16–

AD1859

2 TO 1

SELECTOR

13-BIT

ADDER

RI BUS

K BUS

R BUS

27 MHz

BCLK

13-BIT

LATCH

27MHz

13-BIT

ADDER

M [12..0]

L BUS

N [12..0]

SELECT K BUS WHEN K < N (MSB = 0)

SELECT R BUS WHEN K > N (MSB = 1)

MSB

Figure 33. Numerically Controlled Oscillator Circuit

28-Lead Wide-Body SO

(R-28)

0.7125 (18.10)

0.6969 (17.70)

PIN 1

SEATING

PLANE

0.0118 (0.30)

0.0040 (0.10)

0.020 (0.49)

0.013 (0.35)

0.1043 (2.65)

0.0926 (2.35)

0.0500

(1.27)

BSC

0.0125 (0.32)

0.0091 (0.23)

0.050 (1.27)

0.016 (0.40)

0.029 (0.74)

0.010 (0.25)

x 45

28-Lead Shrink Small Outline Package (SSOP)

(RS-28)

0.41 (10.50)

0.39 (9.90)

PIN 1

SEATING

PLANE

0.073 (1.85)

0.065 (1.65)

0.026

(0.65)

BSC

0.015 (0.38)

0.009 (0.22)

0.002 (0.05)

MIN

0.079 (2.0)

MAX

0.01 (0.25)

0.004 (0.09)

0.037 (0.95)

0.022 (0.55)

OUTLINE DIMENSIONS

Dimensions shown in inches and (mm).

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