ml2037 Micro Electronics Corporation, ml2037 Datasheet - Page 6

• Manufacturer Part Number: ml2037
• Description: 500khz, Serial Input, Programmable Sine Wave Generator With Digital Gain Control
• Manufacturer: Micro Electronics Corporation

ML2037
6
CLK IN
PHASE ACCUMULATOR
OSCILLATOR
CRYSTAL
BINARY
Figure 1. Detailed Block Diagram of the ML2037.
÷2
S DATA IN
S ENABLE
SIGNIFICANT
(12 BITS)
G1
G0
f
REF
f
LEAST
PHASE SAMPLES
REF
(7 BITS)
A
A
DIGITAL-TO-ANALOG
16
20
Q
GAIN CONTROL &
COMPLEMENTOR
COMPLEMENTER
0
•••
A
SHIFT REGISTER
A
DATA LATCH
0
15
(16 BITS)
SUM (21 BITS)
CONVERTER
QUADRANT
READ-ONLY
• • •
•
LOW-PASS
MEMORY
SINEWAVE
•
OUTPUT
(16 BITS)
(128
OUTPUT
ADDER
(7 BITS)
(7 BITS)
LATCH
16-BIT
LATCH
(7 BITS)
16-BIT
21-BIT
21-BIT
(7BITS)
FILTER
• • •
• • •
• • •
• • •
SIGN
8-BIT
•••
•
•
X
7)
•
•
• • •
B
0
QUADRANT
Q
–B
20
20
SIGN BIT
SIGN
SIGN
BIT
BIT
BIT
SIGN
BIT
COMPLEMENTOR
COMPLEMENTOR
OUTPUT LATCH
INPUT TO SIGN
INPUT TO D/A
QUADRANT
CONVERTER
INPUT TO
INPUT TO
INPUT TO
ROM
T =
f
REF
1
OUTPUT OF
LOW-PASS
INPUT TO
(ANALOG
LOW-PASS
(ANALOG
SIGNAL)
SIGNAL)
FILTER
FILTER
PICTORIAL
PRESENTATION
OF DIGITAL DATA