hi3-7152k-5 Intersil Corporation, hi3-7152k-5 Datasheet

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hi3-7152k-5

Manufacturer Part Number
hi3-7152k-5
Description
10-bit High Speed Converter With Track Hold
Manufacturer
Intersil Corporation
Datasheet
January 1998
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
Features
• Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5µs
• Continuous Throughput Rate . . . . . . . . . . . . . . . 200kHz
• No Offset or Gain Adjustments Necessary
• Internal Track and Hold Amplifier
• Analog and Reference Inputs Fully Buffered
• µP Compatible Byte Organized Outputs
• Low Power Consumption . . . . . . . . . . . . . . . . . . 150mW
• Uses a Single 2.5V Reference for ±2.5 V Input Range
Applications
• µP Controlled Data Acquisition Systems
• DSP
• Process Control
• Robotics
• Digital Communications
• Image Processing
Pinout
- Avionics
- Sonar
- Automotive Transducer Sensing
- Industrial
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
®
SMODE
HOLD
BUSY
V
GND
CLK
SET
REF
WR
V
DG
AG
CS
RD
V-
IN
10
11
12
13
14
1
2
3
4
5
6
7
8
9
(PDIP, CERDIP)
TOP VIEW
HI-7152
6-1
Description
The Intersil HI-7152 is a high speed 10-bit A/D converter
which uses a Two-Step, Flash algorithm to achieve
throughput rates of 200kHz. A unique switched capacitor
technique allows a new input voltage to be sampled while a
conversion is taking place.
Internal high speed CMOS buffers at both the analog and
reference inputs simplify external drive requirements.
A Track and Hold amplifier is included on the chip, consisting
of two high speed amplifiers and an internal hold capacitor.
Microprocessor bus interfacing is simplified by the use of
standard Chip Select, Read, and Write control signals. The
digital three-state outputs are byte organized for interfacing
the either 8-bit or 16-bit systems. An out-of-range pin,
together with the MSB, can be used to indicate an under-
range or over-range condition.
The HI-7152 operates with ±5V supplies. A single +2.5V
reference is required to provide a bipolar input range from
-2.5V to +2.5V.
Ordering Information
HI3-7152J-5
HI3-7152K-5
HI3-7152A-9
HI3-7152B-9
HI1-7152S-2
NUMBER
PART
28
27
26
25
24
23
22
21
20
19
18
17
16
15
10-Bit High Speed A/D Converter
V+
OVR
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
HBE
BUS
LINEARITY
(MAX. DLE)
±
±
±1 LSB
±1 LSB
±1 LSB
1
1
/
/
2
2
LSB
LSB
HI-7152
with Track and Hold
RANGE (
-55 to 125
TEMP.
0 to 75
0 to 75
0 to 85
0 to 85
File Number
o
C)
28 Ld PDIP
28 Ld PDIP
28 Ld PDIP
28 Ld PDIP
28 Ld CERDIP
PACKAGE
3100.1

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hi3-7152k-5 Summary of contents

Page 1

... MSB, can be used to indicate an under- range or over-range condition. The HI-7152 operates with ±5V supplies. A single +2.5V reference is required to provide a bipolar input range from -2.5V to +2.5V. Ordering Information PART LINEARITY NUMBER (MAX. DLE) HI3-7152J-5 ± HI3-7152K-5 HI3-7152A-9 ± HI3-7152B-9 HI1-7152S-2 HI-7152 (PDIP, CERDIP) TOP VIEW GND ...

Page 2

Functional Diagram REF AMP V REF REF 3 INVERT AG (ANALOG GROUND (ANALOG INPUT GND (DIGITAL GROUND) HI-7152 (+) (33 TWO RESISTOR STEP LADDER FLASH INPUT ...

Page 3

Pin Descriptions PIN SYMBOL 1 GND Ground return for comparators (0V Negative supply voltage input (-5V Reference voltage input (+2.50V). REF 4 AG Analog ground reference (0V Analog Input Voltage SET Connect ...

Page 4

... C at -10mW/C Operating Conditions Temperature Range HI3-7152X HI3-7152X -40 CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. ...

Page 5

DC Electrical Specifications -5V, V Unless Otherwise Specified (Continued) PARAMETER SYMBOL TRACK AND HOLD (See Text) Slew Rate SR Bandwidth BW Aperture Time Aperture Uncertainty Feedthrough in HOLD Acquisition Time LOGIC INPUTS Input High Voltage ...

Page 6

AC Electrical Specifications ±10 -5V ±10 100pF (including stray for D0 - D9, OVR, HOLD, BUSY), Unless Otherwise Specified (Note 12) L PARAMETER SYMBOL Continuous Conversion Time Slow Memory Mode Conversion t ...

Page 7

Timing Diagrams SMODE = +V, BUS = V+, HBE = CLOCK WRL HOLD TRACK N HOLD N t HOLD INTERNAL DATA RD t WRD BUSY D0-D9, OVR DATA FIGURE 1A. SLOW MEMORY MODE ...

Page 8

Timing Diagrams (Continued) SMODE = DG, BUS = DG 0 CLOCK CS WR (WR MAY BE WIRED LOW) t HOLD HOLD N HOLD TRACK N INTERNAL DATA RD HBE (HBE/LBE) D0-D9, OVR DATA BUSY FIGURE 1B. FAST MEMORY MODE (8-BIT ...

Page 9

Detailed Description The HI-7152 is a high speed 10-bit A/D converter which achieves throughput rates of 200kHz by use of a Two Step Flash algorithm. A pipelined operation has been achieved through the use of switched capacitor techniques which allow ...

Page 10

ANALOG INPUT (NOTE) LSB = 1024 V = 2.500V REF REF ≥ +V 2.500V to V+ (+OVR) REF + LSB 2.49512V (+Full Scale) REF +1 LSB 0.00488V 0 0.000V -1 LSB -0.00488V -V -2.500V ...

Page 11

Slow Memory Mode In slow memory mode, the conversion will be initiated by the microprocessor by selecting the chip (CS) and pulsing WR low. This mode is selected by hardwiring the SMODE pin to V+. This mode is intended for ...

Page 12

As in any analog system, good supply bypassing is necessary in order to achieve optimum system performance (minimize conversion errors). The power supplies should be bypassed with at least a 20µF tantalum and 0.1µF ceramic capacitors to GND. The reference ...

Page 13

ANALOG INPUT 600kHz CLOCK CS WR HOLD TRACK N HOLD N INTERNAL DATA RD BUSY D0-D9, OVR DATA FIGURE 5. SLOW MEMORY MODE APPLICATION HI-7152 HI-7152 V+ 1 GND - OVR 3 D9 +2.56V V REF 0V 4 ...

Page 14

ANALOG INPUT 600kHz CLOCK CS WR (WR MAY BE WIRED LOW) HOLD N HOLD TRACK N INTERNAL DATA RD D0-D9, OVR DATA BUSY FIGURE 6. FAST MEMORY MODE APPLICATION HI-7152 HI-7152 1 GND OVR -5V +2.56V 3 ...

Page 15

ANALOG INPUT V+ 600kHz CLOCK TRACK N HOLD N HOLD INTERNAL DATA D0-D9, OVR ADDRESS DECODER ANALOG INPUTS DG528 S4 DG MUX SIGNAL S5 GROUND S6 RS SYSTEM S7 RESET S8 ...

Page 16

ADDRESS DECODER CS ANALOG INPUTS WR D PROGRAMMBLE S1 GAIN AMP DG528 DG S4 MUX SIGNAL S5 GROUND S6 RS SYSTEM S7 RESET S8 D0-D2, EN FIGURE 9. MULTI-CHANNEL DATA ACQUISITION SYSTEM WITH PROGRAMMABLE GAIN V ...

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