HI3318JIB INTERSIL [Intersil Corporation], HI3318JIB Datasheet

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HI3318JIB

Manufacturer Part Number
HI3318JIB
Description
8-Bit, 15 MSPS, Flash A/D Converter
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
August 1997
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
Features
• CMOS Low Power (Typ). . . . . . . . . . . . . . . . . . . 150mW
• Parallel Conversion Technique
• Sampling Rate at 5V Supply . . . . . . . . . . . . . . . . 15MHz
• 8-Bit Latched Three-State Output with Overflow Bit
• Accuracy (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . .
• Single Supply Voltage . . . . . . . . . . . . . . . . . . 4V to 7.5V
• Linearity (INL):
• Sampling Rate:
• Video Digitizing
• High-Speed A/D Conversion
• Medical Imaging
• Radar Signal Processing
• Digital Communications Systems
Pinout
- HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 LSB
- HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 LSB
- HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns)
- HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns)
(DIG. SUP.) V
(DIG. GND) V
OVERFLOW
(MSB) B8
(LSB) B1
1/4R
B2
B3
B4
B5
B6
B7
DD
SS
10
11
12
1
2
3
4
5
6
7
8
9
1 LSB
(PDIP, SOIC)
TOP VIEW
4-1452
HI3318
Description
The HI3318 is a CMOS parallel (FLASH) analog-to-digital
converter designed for applications demanding both low
power consumption and high speed digitization.
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.
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.
Ordering Information
HI3318JIP
HI3318JIB
PART NUMBER
8-Bit, 15 MSPS, Flash A/D Converter
24
23
22
21
20
19
18
17
16
15
14
13
V
3/4R
V
V
p
PHASE
CLK
V
V
V
CE1
CE2
AA
AA
REF
IN
IN
REF
+ (ANA. SUP.)
- (ANA. GND)
+
-
RANGE (
-40 to 85
-40 to 85
TEMP.
o
C)
HI3318
24 Ld PDIP
24 Ld SOIC
PACKAGE
File Number
E24.6
M24.3
PKG.
NO.
4135.1

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HI3318JIB Summary of contents

Page 1

... Sampling Rate at 5V Supply . . . . . . . . . . . . . . . . 15MHz • 8-Bit Latched Three-State Output with Overflow Bit • Accuracy (Typ • Single Supply Voltage . . . . . . . . . . . . . . . . . . 4V to 7.5V • Linearity (INL): - HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 LSB - HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 LSB • Sampling Rate: - HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns) - HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns) • Video Digitizing • High-Speed A/D Conversion • ...

Page 2

Functional Block Diagram ANALOG SUPPLY REF / REF REF 2 ...

Page 3

Absolute Maximum Ratings Supply Voltage Range ( -0. (Referenced Terminal, Whichever is SS ...

Page 4

Electrical Specifications All Reference Points Adjusted, Unless Otherwise Specified (Continued) PARAMETER DIGITAL INPUTS Low Level Input Voltage CE1, CE2 Phase, CLK High Level Input Voltage CE1, CE2 Phase, CLK Input Leakage ...

Page 5

Timing Waveforms (Continued) CE1 CE2 t DIS BITS DATA OF AUTO BALANCE CLOCK NO MAX LIMIT DATA FIGURE 3A. STANDBY IN INDEFINITE AUTO BALANCE (SHOWN WITH PHASE = LOW) SAMPLE CLOCK N 500ns MAX DATA FIGURE 3B. ...

Page 6

Typical Performance Curves (MHz) S FIGURE 4. DEVICE CURRENT vs SAMPLE FREQUENCY 8 15MHz 1MHz S I 7.8 7.6 7.4 7.2 7.0 6.8 6.6 6.4 6.2 ...

Page 7

Typical Performance Curves 8.0 7.6 7.2 6.8 6.4 6.0 5.6 5.2 4.8 4.4 4.0 Pin Descriptions PIN NAME DESCRIPTION 1 B1 Bit 1 (LSB Bit Bit Bit Bit 5 ...

Page 8

The cascaded auto-balance (CAB) technique, used here, increases comparator sensitivity and temperature tracking. In the “Sample Unknown” phase, all ladder tap switches ...

Page 9

Point Trims The / , / and / points on the reference ladder are brought out for linearity adjusting or if the user wishes to create a nonlinear transfer function. The ...

Page 10

REF +5V V IN1 0V TO 6.4V MID-POINT 6.4V REF DRIVER A +5V A FIGURE 13. USING TWO HI3318s FOR 9-BIT RESOLUTION 4.7 F/10V TANTALUM A +4V TO +6.5V REFERENCE OPTIONAL CAP (SEE TEXT) 0.01 F CLOCK SOURCE INPUT ...

Page 11

SIGNAL SOURCE SIGNAL GROUND - ANALOG SUPPLIES FIGURE 15. TYPICAL SYSTEM GROUNDING/BYPASSING 75 1V P-P VIDEO INPUT 75 NOTE: Ground-planing and tight layout are extremely important. FIGURE 16. TYPICAL HIGH BANDWIDTH AMPLIFIER FOR DRIVING THE HI3318 HI3318 V IN AMP ...

Page 12

INPUT VOLTAGE CODE V V REF REF DESCRIPTION 6.40V (V) 5.12V (V) Zero 0.00 0.00 1 LSB 0.025 0.02 2 LSB 0.05 0. Full Scale 1.60 1. Full Scale - 1 LSB 3.175 ...

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