X9530-B15I INTERSIL [Intersil Corporation], X9530-B15I Datasheet - Page 10

• Manufacturer Part Number: X9530-B15I
• Description: Temperature Compensated Laser Diode Controller
• Manufacturer: INTERSIL [Intersil Corporation]

Figure 5. D/A Converter Block Diagram
Figure 6. Look-up Table (LUT) Operation
Input byte
DAC1 or
DAC2
VRef
LUT2 Row
Selection bits
LUT1 Row
Selection bits
10
D0h
90h
Voltage
Divider
3 and 2 in Control
bits 1 and 0, or
or I2FSO[1:0]
I1FSO[1:0]
6
8
6
8
I1DS or I2DS: bits
register 5
6 or 7 in Control
A
D
D
E
R
A
D
D
E
R
register 0.
8
8
+
-
Vss
X9530
LUT2
LUT1
11
10Fh
CFh
D0h
90h
Polarity
Vss
Select
Circuit
Vcc
10 01
00
8
8
Vss
D2DA[7:0] : Control register 4
D1DA[7:0] : Control register 3
8
8
R1 or R2 Pin
D0
D0
D1
D1
Select
Select
D2DAS: Bit 7 of
Control register 5
D1DAS: Bit 5 of
Control register 5
Vss
Out
Out
R1_External or R2_External
Optional external resistor
I1 or I2 Pin
DAC 2
Input Byte
DAC 1
Input Byte
March 10, 2005
FN8211.0