HI7191IBZ-T Intersil, HI7191IBZ-T Datasheet

CONV A/D 24BIT SIGMA/DLTA 20SOIC

HI7191IBZ-T

Manufacturer Part Number
HI7191IBZ-T
Description
CONV A/D 24BIT SIGMA/DLTA 20SOIC
Manufacturer
Intersil
Datasheet

Specifications of HI7191IBZ-T

Number Of Bits
24
Data Interface
Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
32.5mW
Voltage Supply Source
Analog and Digital, Dual ±
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (0.300", 7.50mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
HI7191IBZ-TTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HI7191IBZ-T
Manufacturer:
Intersil
Quantity:
2 000
24-Bit, High Precision, Sigma Delta A/D
Converter
The Intersil HI7191 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 specs.
The HI7191 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.
Ordering Information
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. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
*Pb-free PDIPs can be used for through hole wave solder processing
only. They are not intended for use in Reflow solder processing
applications.
HI7191IP
HI7191IPZ
(See Note)
HI7191IB
HI7191IBZ
(See Note)
HI7191IBZ-T
(See Note)
HI7190EVAL Evaluation Kit
NUMBER
PART
HI7191IP
HI7191IPZ
HI7191IB
HI7191IBZ
HI7191IBZ
MARKING
PART
®
-40 to 85 20 Ld PDIP
-40 to 85 20 Ld PDIP*
-40 to 85 20 Ld SOIC
-40 to 85 20 Ld SOIC
-40 to 85 20 Ld SOIC
RANGE
TEMP.
1
(°C)
Data Sheet
(Pb-free)
(Pb-free)
Tape and Reel
(Pb-free)
PACKAGE
E20.3
E20.3
M20.3
M20.3
M20.3
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• 20-Bit Resolution with No Missing Code
• 0.0015% 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
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
• TB348 “HI7190/1 Negative Full Scale Error vs
• AN9504 “A Brief Intro to Sigma Delta Conversion”
• TB329 “Intersil Sigma Delta Calibration Technique”
• AN9505 “Using the HI7190 Evaluation Kit”
• TB331 “Using the HI7190 Serial Interface”
• AN9527 “Interfacing HI7190 to a Microcontroller”
• AN9532 “Using HI7190 in a Multiplexed System”
• AN9601 “Using HI7190 with a Single +5V Supply”
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Conversion Frequency”
All other trademarks mentioned are the property of their respective owners.
Copyright © Intersil Americas Inc. 2003, 2005, 2006. All Rights Reserved
June 1, 2006
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
HI7191
FN4138.8

Related parts for HI7191IBZ-T

HI7191IBZ-T Summary of contents

Page 1

... HI7191IB HI7191IB - SOIC HI7191IBZ HI7191IBZ - SOIC (See Note) (Pb-free) HI7191IBZ-T HI7191IBZ - SOIC (See Note) Tape and Reel (Pb-free) HI7190EVAL Evaluation Kit 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 2

Pinout HI7191 (PDIP, SOIC) TOP VIEW 1 20 SCLK SDO 2 19 SDIO DRDY 5 16 DGND RLO RHI ...

Page 3

Typical Application Schematic +5V INPUT + INPUT - REFERENCE -5V 0.1μF 3 HI7191 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 Logic Current Input Capacitance DIGITAL OUTPUTS Output Logic High Voltage Output Logic Low Voltage Output Three-State Leakage Current Digital ...

Page 6

Timing Diagrams t CS SCLK SDIO CS SCLK SDIO SDO t ACC DRDY CS SCLK SDIO 1 6 HI7191 t PRE SCLK SCLKPW DSU SCLKPW t DHLD 1ST BIT FIGURE 1. DATA WRITE TO HI7191 1ST BIT ...

Page 7

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 INPUT 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

Motorola 6805/11 series SPI and Intel 8051 series SSR protocols. Data Integrity is always maintained at the HI7191 output port. This means that if a data read of conversion N is begun but not finished ...

Page 11

The output of the comparator is then fed back via a 1-bit DAC to the summing junction. The feedback loop forces the average of the fed back signal to be equal to the ...

Page 12

The HI7191 is designed to have a range of AV +1.8V < V < this range on the V pin will compromise ...

Page 13

NOT the absolute frequency. The error is seen when the user applies mid-scale (0V input, Bipolar mode). With this input, the expected digital output should be mid-scale (800000 ). Instead, there is a small h probability ...

Page 14

Scale Calibration Register, and 800000 (h) to the Negative Full Scale Calibration Register. This sets the offset correction factor to 0 and both the positive and negative gain slope factors to 1. The HI7191 offers several different modes of Self-Calibration ...

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

Normal operation in self-clocking mode is as follows (See Figure 12 sampled low on falling OSC SCLK transition output is delayed 29 OSC next rising OSC . SCLK transitions eight times and then stalls 1 high for 28 ...

Page 17

OSC 1 CS SCLK Programming the Serial Interface It is useful to think of the HI7191 interface in terms of communication cycles. Each communication cycle happens in 2 phases. The first phase of every communication cycle is the writing ...

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. MSB R/W MB1 MB0 FSC A3 R/W - Bit 7 of the Instruction Register determines ...

Page 19

Detailed Register Descriptions Data Output Register The Data Output Register contains 24 bits of converted data. This register is a read only register. BYTE 2 MSB D23 D22 D21 D20 D19 IR WRITE PHASE CS SCLK ...

Page 20

IR WRITE PHASE CS SCLK SDIO SDO THREE-STATE FIGURE 18. DATA READ CYCLE, 2-WIRE CONFIGURATION, SCLK IDLE LOW IR WRITE PHASE CS SCLK SDIO SDO THREE-STATE FIGURE ...

Page 21

G2 through G0 - Bits 7 through 5 select the gain of the input analog signal. The gain is accomplished through a programmable gain instrumentation amplifier that gains up incoming signals from This is achieved by using ...

Page 22

Offset Calibration Register The Offset Calibration Register is a 24-bit register containing the offset correction factor. This register is indeterminate on power-up but will contain a Self Calibration correction value after a RESET has been applied. BYTE 2 MSB 22 ...

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 HI7191 SUBSTRATE POTENTIAL (POWERED UP PASSIVATION: Type: Sandwich Å Thickness: ...

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 ...

Page 25

... 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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