CA3338 Intersil Corporation, CA3338 Datasheet

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CA3338

Manufacturer Part Number
CA3338
Description
CMOS Video Speed/ 8-Bit/ 50 MSPS/ R2R D/A Converters
Manufacturer
Intersil Corporation
Datasheet

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August 1997
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
Features
• CMOS/SOS Low Power
• R2R Output, Segmented for Low “Glitch”
• CMOS/TTL Compatible Inputs
• Fast Settling: (Typ) to
• Feedthrough Latch for Clocked or Unclocked Use
• Accuracy (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 LSB
• Data Complement Control
• High Update Rate (Typ) . . . . . . . . . . . . . . . . . . . . 50MHz
• Unipolar or Bipolar Operation
Applications
• TV/Video Display
• High Speed Oscilloscope Display
• Digital Waveform Generator
• Direct Digital Synthesis
Pinout
V
D7
D6
D5
D4
D3
D2
D1
SS
1
2
3
4
5
6
7
8
(PDIP, SBDIP, SOIC)
CA3338, CA3338A
TOP VIEW
1
/
2
|
LSB . . . . . . . . . . . . . . . . 20ns
Copyright
16
15
14
13
12
11
10
9
©
V
LE
COMP
V
V
V
V
D0
Intersil Corporation 1999
OUT
DD
REF
REF
EE
+
-
CA3338, CA3338A
10-11
Description
The CA3338 family are CMOS/SOS high speed R2R voltage
output digital-to-analog converters. They can operate from a
single +5V supply, at video speeds, and can produce
“rail-to-rail” output swings. Internal level shifters and a pin for
an optional second supply provide for an output range below
digital ground. The data complement control allows the inver-
sion of input data while the latch enable control provides
either feedthrough or latched operation. Both ends of the
R2R ladder network are available externally and may be
modulated for gain or offset adjustments. In addition, “glitch”
energy has been kept very low by segmenting and thermom-
eter encoding of the upper 3 bits.
The CA3338 is manufactured on a sapphire substrate to give
low dynamic power dissipation, low output capacitance, and
inherent latch-up resistance.
Ordering Information
CA3338E
CA3338AE
CA3338D
CA3338AD
CA3338M
CA3338AM
NUMBER
PART
50 MSPS, R2R D/A Converters
LINEARITY
(INL, DNL)
0.75 LSB
0.75 LSB
0.75 LSB
1.0 LSB
1.0 LSB
1.0 LSB
CMOS Video Speed, 8-Bit,
RANGE (
-55 to 125
-55 to 125
-40 to 85
-40 to 85
-40 to 85
-40 to 85
TEMP.
o
C)
16 Ld SOIC
16 Ld SOIC
16 Ld PDIP
16 Ld PDIP
16 Ld SBDIP
16 Ld SBDIP
File Number
PACKAGE
E16.3
E16.3
D16.3
D16.3
M16.3
M16.3
PKG.
1850.2
NO.

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CA3338 Summary of contents

Page 1

... In addition, “glitch” energy has been kept very low by segmenting and thermom- eter encoding of the upper 3 bits. The CA3338 is manufactured on a sapphire substrate to give low dynamic power dissipation, low output capacitance, and inherent latch-up resistance. Ordering Information ...

Page 2

... Functional Diagram COMP LEVEL D6 SHIFTERS CA3338, CA3338A 3-BIT TO 7-LINE THERMOMETER ENCODER FEEDTHROUGH LATCHES 10- REF OUT REF ...

Page 3

... Output r Settling Time t 10% to Settling to S Output Impedance 6V, V REF Glitch Area Glitch Area REF EE CA3338, CA3338A Thermal Information Thermal Resistance (Typical, Note 1) SBDIP Package . . . . . . . . . . . . . . . . . . PDIP Package . . . . . . . . . . . . . . . . . . . - 0. 0.5V SOIC Package . . . . . . . . . . . . . . . . . . . 0.5V Maximum Junction Temperature DD DD Ceramic Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 20mA Plastic Packages ...

Page 4

... V Analog Output OUT Reference Voltage Positive Input REF 14 COMP Data Complement Control input. Active High 15 LE Latch Enable Input. Active Low 16 V Digital Power Supply, +5V DD CA3338, CA3338A = 5V 4.608V REF SS EE REF MIN REF ...

Page 5

... REF scale reference. The “P” channel (pull up) transistor of each driver is returned the (+) full-scale reference. REF CA3338, CA3338A In unipolar operation, V analog ground, but may be raised above ground (see specifi- cations). There is substantial code dependent current that flows from V REF ...

Page 6

... ERROR (SHOWN -) positive or negative-going step usually expressed in pV/s. The CA3338 uses a modified R2R ladder, where the 3 most significant bits drive a bar graph decoder and 7 equally weighted resistors. This makes the “glitch” energy at each ...

Page 7

... HEX Applications The output of the CA3338 can be resistively divided to match a doubly terminated line, although peak-to-peak swings of less than 1V may result. The output magnitude will also vary with the converter’s output impedance. Figure 5 shows such an application. Note that because of the HCT input structure, the CA3338 could be operated ...

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