HI7190EVAL Intersil, HI7190EVAL Datasheet

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HI7190EVAL

Manufacturer Part Number
HI7190EVAL
Description
EVALUATION PLATFORM HI7190
Manufacturer
Intersil
Datasheets

Specifications of HI7190EVAL

Number Of Adc's
1
Number Of Bits
24
Sampling Rate (per Second)
200k
Data Interface
Serial
Inputs Per Adc
1 Differential
Input Range
±2.5 V
Power (typ) @ Conditions
15mW @ 200kSPS
Voltage Supply Source
Analog and Digital, Dual ±
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
HI7190
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
24-Bit, High Precision, Sigma Delta A/D
Converter
The Intersil HI7190 is a monolithic instrumentation, sigma
delta A/D converter which operates from ±5V supplies. Both
the signal and reference inputs are fully differential for
maximum flexibility and performance. An internal
Programmable Gain Instrumentation Amplifier (PGIA)
provides input gains from 1 to 128 eliminating the need for
external pre-amplifiers. The on-demand converter auto-
calibrate function is capable of removing offset and gain
errors existing in external and internal circuitry. The on-board
user programmable digital filter provides over 120dB of
60/50Hz noise rejection and allows fine tuning of resolution
and conversion speed over a wide dynamic range. The
HI7190 and HI7191 are functionally the same device, but the
HI7190 has tighter linearity specifications.
The HI7190 contains a serial I/O port and is compatible with
most synchronous transfer formats including both the
Motorola 6805/11 series SPI and Intel 8051 series SSR
protocols. A sophisticated set of commands gives the user
control over calibration, PGIA gain, device selection, standby
mode, and several other features. The On-chip Calibration
Registers allow the user to read and write calibration data.
Pinout
DGND
DRDY
SCLK
V
AV
SDIO
V
SDO
V
RLO
RHI
CS
CM
SS
10
20 LD SOIC, PDIP
1
2
3
4
5
6
7
8
9
TOP VIEW
HI7190
®
1
Data Sheet
20
19
18
17
16
15
14
13
12
11
MODE
SYNC
RESET
OSC
OSC
DV
AGND
AV
V
V
INHI
INLO
DD
DD
1
2
1-888-INTERSIL or1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• 22-Bit Resolution with No Missing Code
• 0.0007% Integral Non-Linearity (Typ)
• 20mV to ±2.5V Full Scale Input Ranges
• Internal PGIA with Gains of 1 to 128
• Serial Data I/O Interface, SPI Compatible
• Differential Analog and Reference Inputs
• Internal or System Calibration
• 120dB Rejection of 60/50Hz Line Noise
• Settling Time of 4 Conversions (Max) for a Step Input
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Process Control and Measurement
• Industrial Weight Scales
• Part Counting Scales
• Laboratory Instrumentation
• Seismic Monitoring
• Magnetic Field Monitoring
• Additional Reference Literature
- Technical Brief, TB348 “HI7190/1 Negative Full Scale
- Application Note, AN9504 “A Brief Intro to Sigma Delta
- Technical Brief, TB329 “Intersil Sigma Delta Calibration
- Application Note, AN9505 “Using the HI7190 Evaluation
- Technical Brief, TB331 “Using the HI7190 Serial
- Application Note, AN9527 “Interfacing HI7190 to a
- Application Note, AN9532 “Using HI7190 in a
- Application Note, AN9601 “Using HI7190 with a Single
Error vs Conversion Frequency”
Conversion”
Technique”
Kit”
Interface”
Microcontroller”
Multiplexed System”
+5V Supply”
All other trademarks mentioned are the property of their respective owners.
June 27, 2006
Copyright © Intersil Americas Inc. 2003, 2005-2006. All Rights Reserved.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
FN3612.10
HI7190

Related parts for HI7190EVAL

HI7190EVAL Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or1-888-468-3774 All other trademarks mentioned are the property of their respective owners. HI7190 FN3612.10 | Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003, 2005-2006. All Rights Reserved. ...

Page 2

... HI7190IBZ-T HI7190IBZ - (Note) HI7190EVAL Evaluation Kit *Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 3

Typical Application Schematic +5V INPUT + - INPUT REFERENCE -5V 0.1μF 3 HI7190 10MHz 17 16 OSC OSC 4.7μF 0.1μ INHI 11 V INLO +2.5V V RHI ...

Page 4

Absolute Maximum Ratings Supply Voltage AV to AGND ...

Page 5

Electrical Specifications AV DD PGIA Gain = 1, OSC PARAMETER Input Capacitance DIGITAL OUTPUTS Output Logic High Voltage Output Logic Low Voltage Output Three-State Leakage Current Digital Output Capacitance, C OUT TIMING ...

Page 6

Timing Diagrams t PRE CS SCLK SDIO CS SCLK SDIO SDO t ACC DRDY CS SCLK SDIO 1 6 HI7190 t SCLK t DSU t t SCLKPW SCLKPW t DHLD 1ST BIT FIGURE 1. DATA WRITE TO HI7190 1ST BIT ...

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Pin Descriptions 20 LEAD DIP, SOIC PIN NAME 1 SCLK Serial Interface Clock. Synchronizes serial data transfers. Data is input on the rising edge and output on the falling edge. 2 SDO Serial Data OUT. Serial data is read from ...

Page 8

TABLE 1. NOISE PERFORMANCE WITH INPUTS CONNECTED TO ANALOG GROUND P-P NOISE HERTZ SNR ENOB GAIN = 1 10 132.3 21.7 25 129.5 21.2 30 127.7 20.9 50 126.3 20.7 60 125.6 20.6 100 122.4 20.0 250 107.7 17.6 500 ...

Page 9

Definitions Integral Non-Linearity, INL, is the maximum deviation of any digital code from a straight line passing through the endpoints of the transfer function. The endpoints of the transfer function are zero scale (a point 0.5 LSB below the first ...

Page 10

SPI and Intel 8051 series SSR protocols. Data Integrity is always maintained at the HI7190 output port. This means that if a data read of conversion N is begun but not finished before the next conversion (conversion ...

Page 11

The feedback loop forces the average of the fed back signal to be equal to the input signal V PGIA INTEGRATOR + ∑ ∫ DAC V RHI V RLO FIGURE 6. SIMPLE MODULATOR BLOCK DIAGRAM Analog ...

Page 12

AV - 1.8V. Exceeding this range on the V DD compromise the device performance. Transducer Burn-Out Current Source The V input of the HI7190 contains a 500nA (Typ) current INHI source which can be turned on/off via the Control Register. ...

Page 13

Instead, there is a small h probability erroneous negative full scale (000000 output. Refer to Technical Brief TB348 for complete details. The FP10 to FP0 bits programmed into the Control Register determine the ...

Page 14

The HI7190 offers several different modes of Self-Calibration and System Calibration. For calibration to occur, the on-chip microcontroller must convert the modulator output for three different input conditions - “zero-scale,” “positive full scale,” and “negative full scale”. With these readings, ...

Page 15

System Offset/Internal Gain Calibration Mode Please note: System Offset/Internal Gain is only valid when operating in a gain of one. In addition, the offset and gain errors are not reduced as with the full system calibration. The System Offset/Internal Gain ...

Page 16

SCLK transition output is delayed 29 OSC the next rising OSC . SCLK transitions eight times and then 1 stalls high for 28 OSC cycles. After this stall period is 1 completed SCLK will again transition eight times and ...

Page 17

DRDY - Data Ready. This is an output status flag from the device to signal that the Data Output Register has been updated with the new conversion result. DRDY is useful as an edge or level sensitive interrupt signal to ...

Page 18

Instruction Register The Instruction Register is an 8-bit register which is used during a communications cycle for setting up read/write operations. INSTRUCTION REGISTER MSB R/W MB1 MB0 FSC A3 R/W - Bit 7 of the Instruction ...

Page 19

The communication cycle is started by asserting the CS line and starting the clock from its idle state. To assert a read cycle, during the instruction phase of the communication cycle, the Instruction Byte should be set to a read ...

Page 20

IR WRITE PHASE CS SCLK SDIO SDO FIGURE 17. DATA READ CYCLE, 3-WIRE CONFIGURATION, SCLK IDLE HIGH IR WRITE PHASE CS SCLK SDIO SDO THREE-STATE FIGURE 18. ...

Page 21

Changing the filter notch frequency, as well as the selected gain, impacts resolution. The output data rate (or effective conversion time) for the device is equal to the frequency selected for the first notch to the filter. For example, if ...

Page 22

data overwriting conversion X results. For example, with f = 10MHz, f OSC read cycle must start within 1/2000 - 128(1/10 after DRDY went low. 2) The Data Output Register read cycle for conversion ...

Page 23

Die Characteristics DIE DIMENSIONS 3550μm x 6340μm METALLIZATION Type: AlSiCu Å Thickness:Metal 2, 16k Å Metal 1, 6k Metallization Mask Layout CS DRDY DGND HI7190 SUBSTRATE POTENTIAL (POWERED UP PASSIVATION Type: Sandwich Å Thickness:Nitride 8k ...

Page 24

Dual-In-Line Plastic Packages (PDIP INDEX N/2 AREA -B- -A- D BASE PLANE -C- SEATING PLANE 0.010 (0.25 NOTES: 1. Controlling Dimensions: INCH. In case of conflict between ...

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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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