HI3318
8-Bit, 15 MSPS, Flash A/D Converter
August 1997
Features
Description
• CMOS Low Power (Typ). . . . . . . . . . . . . . . . . . . 150mW The HI3318 is a CMOS parallel (FLASH) analog-to-digital
converter designed for applications demanding both low
power consumption and high speed digitization.
• Parallel Conversion Technique
• Sampling Rate at 5V Supply . . . . . . . . . . . . . . . . 15MHz
The HI3318 operates over a wide full scale input voltage
range of 4V up to 7.5V with maximum power consumption
depending upon the clock frequency selected. When oper-
ated from a 5V supply at a clock frequency of 15MHz, the
typical power consumption of the HI3318 is 150mW.
• 8-Bit Latched Three-State Output with Overflow Bit
• Accuracy (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . . ±1 LSB
• Single Supply Voltage . . . . . . . . . . . . . . . . . . 4V to 7.5V
256 paralleled auto balanced voltage comparators measure
the input voltage with respect to a known reference to pro-
duce the parallel bit outputs in the HI3318. 255 comparators
are required to quantize all input voltage levels in this 8-bit
converter, and the additional comparator is required for the
overflow bit.
• Linearity (INL):
- HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.5 LSB
- HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.5 LSB
• Sampling Rate:
- HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns)
- HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns)
Ordering Information
• Video Digitizing
TEMP.
RANGE ( C)
PKG.
NO.
• High-Speed A/D Conversion
• Medical Imaging
o
PART NUMBER
HI3318JIP
PACKAGE
24 Ld PDIP
24 Ld SOIC
-40 to 85
E24.6
M24.3
• Radar Signal Processing
• Digital Communications Systems
HI3318JIB
-40 to 85
Pinout
HI3318
(PDIP, SOIC)
TOP VIEW
(LSB) B1
1
2
24
V
+ (ANA. SUP.)
AA
B2
23 3/4R
22
B3
3
V
+
REF
IN
21 V
20 p
B4
B5
4
5
B6
6
19 PHASE
18 CLK
B7
7
(MSB) B8
OVERFLOW
1/4R
8
17 V - (ANA. GND)
AA
9
16 V
15 V
IN
10
11
12
-
REF
(DIG. GND) V
14 CE1
13 CE2
SS
(DIG. SUP.) V
DD
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
File Number 4135.1
4-1452