AD7366-5ARUZ AD [Analog Devices], AD7366-5ARUZ Datasheet

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AD7366-5ARUZ

Manufacturer Part Number
AD7366-5ARUZ
Description
True Bipolar Input, Dual 1us, 12-Bit, 2-Channel SAR ADC
Manufacturer
AD [Analog Devices]
Datasheet
Preliminary Technical Data
FEATURES
Dual 12-bit, 2-channel ADC
True Bipolar Analog Inputs
Programmable Input Ranges
±10, ±5, 0 to 10 V
Throughput rate: 1 MSPS
Simultaneous conversion with read in less than 1μs
Specified for V
Low current consumption: 5.65 mA max
Wide input bandwidth
70 dB SNR at 50 kHz input frequency
On-chip reference: 2.5 V
–40°C to +85°C operation
High speed serial interface
iCMOS
24-lead TSSOP package
For 14 bit version see AD7367
GENERAL DESCRIPTION
The AD7366
approximation ADC that features throughput rates up to 1
MSPS. The device contains two ADCs, each preceded by a 2-
channel multiplexer, and a low noise, wide bandwidth track-
and-hold amplifier that can handle input frequencies in excess
of 10 MHz.
The AD7366 is fabricated on Analog Devices’ Industrial CMOS
process, iCMOS, a technology platform combining the
advantages of low and high voltage CMOS, bipolar and high
voltage DMOS processes. The process allows the AD7366 to
accept high voltage bipolar signals in addition to reducing
power consumption and package size. The AD7366 can accept
true bipolar analog input signals in the ±10 V range, ±5 V range
and 0 to 10 V range.
The AD7366 has an on-chip 2.5 V reference that can be
overdriven if an external reference is preferred. The AD7366 is
available in a 24-lead TSSOP package.
iCMOS
For analog systems designers within industrial/instrumentation equipment
OEMs who need high performance ICs at higher-voltage levels, iCMOS is a
technology platform that enables the development of analog ICs capable of
30V and operating at +/- 15V supplies while allowing dramatic reductions in
power consumption and package size, and increased AC and DC
performance.
1
Rev. PrG
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Protected by U.S. Patent No. 6,681,332.
SPI®/QSPI™/MICROWIRE™/DSP compatible
TM
TM
Process Technology
Process Technology
1
is a dual, 12-bit, high speed, low power, successive
CC
of 5 V±5%
1μs, 12-Bit, 2-Channel SAR ADC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Table 1.Related Products
Device
Number
AD7367
AD7366-5
AD7367-5
V
V
V
V
A1
A2
B2
B1
AGND
REF
MUX
MUX
AGND
FUNCTIONAL BLOCK DIAGRAM
True Bipolar Input, Dual
Resolution
14-Bit
12-Bit
14-Bit
V
T/H
BUF
T/H
DD
BUF
V
SS
©2006 Analog Devices, Inc. All rights reserved.
APPROXIMATION
APPROXIMATION
SUCCESSIVE
SUCCESSIVE
D
D
CONTROL
CAP
CAP
LOGIC
12-BIT
12-BIT
Figure 1
ADC
ADC
B
A
Throughput
Rate
1 MSPS
500 KSPS
500 KSPS
AV
CC
AD7366
DRIVERS
OUTPUT
DRIVERS
OUTPUT
AD7366
www.analog.com
Number of
Channels
Dual, 2-ch
Dual, 2-ch
Dual, 2-ch
DGND
DV
CC
CONVST
BUSY
RANGE0
RANGE1
REFSEL
V
D
D
SCLK
ADDR
CS
DRIVE
OUT
OUT
A
B

Related parts for AD7366-5ARUZ

AD7366-5ARUZ Summary of contents

Page 1

... The AD7366 can accept true bipolar analog input signals in the ±10 V range, ±5 V range and range. The AD7366 has an on-chip 2.5 V reference that can be overdriven if an external reference is preferred. The AD7366 is available in a 24-lead TSSOP package. ...

Page 2

... AD7366 TABLE OF CONTENTS FEATURES ........................................................................................ 1 GENERAL DESCRIPTION ............................................................ 1 FUNCTIONAL BLOCK DIAGRAM............................................. 1 Specifications..................................................................................... 3 Timing Specifications .................................................................. 6 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Terminology .................................................................................... 10 Theory of operation ................................................................... 11 Analog Inputs.............................................................................. 12 V ............................................................................................ 13 DRIVE Reference ..................................................................................... 13 Modes of Operation ....................................................................... 14 NORMAL MODE ...................................................................... 14 Shut-down Mode ........................................................................ 14 POWER-UP TIMES................................................................... 15 Serial Interface ................................................................................ 16 Outline Dimensions ....................................................................... 17 Ordering Guide ...

Page 3

... 4.75V to 5.25V µA p When in track, ±10 V range pF When in track, ± range pF When in hold KΩ For ±10V @1.12 Msps MΩ For ±10V @100 Ksps KΩ For ±5 / 0-10V @1.12 Msps MΩ For ±5 / 0-10V @100Ksps AD7366 = SCLK = ...

Page 4

... AD7366 Parameter REFERENCE INPUT/OUTPUT 4 Reference Output Voltage Reference Input Voltage Range DC Leakage Current Input Capacitance Output Impedance REF REF Reference Temperature Coefficient V Noise REF LOGIC INPUTS Input High Voltage, V INH Input Low Voltage, V INL Input Current Input Capacitance, C ...

Page 5

... Preliminary Technical Data 3 Sample tested during initial release to ensure compliance. 4 Refers to pins REF REF Rev. PrG | Page AD7366 ...

Page 6

... AD7366 TIMING SPECIFICATIONS = otherwise noted . Table 3. Parameter Limit MIN 2.7V≤V <4.75V 4.75V≤V DRIVE t 610 610 CONVERT SCLK QUIET ...

Page 7

... Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality 0 0.3 V DRIVE + 0.3 V DRIVE + 0 260(+0)°C TBD kV Rev. PrG | Page AD7366 ...

Page 8

... AGND Analog Ground. Ground reference point for all analog circuitry on the AD7366. All analog input signals and any external reference signal should be referred to this AGND voltage. Both AGND pins should connect to the AGND plane of a system. The AGND and DGND voltages ideally should be at the same potential and must not be more than 0 ...

Page 9

... DGND Digital Ground. This is the ground reference point for all digital circuitry on the AD7366. The DGND pin should connect to the DGND plane of a system. The DGND and AGND voltages should ideally be at the same potential and must not be more than 0.3 V apart, even on a transient basis. ...

Page 10

... The AD7366 is tested using the CCIF standard where two input frequencies near the top end of the input bandwidth are used. /2), ...

Page 11

... These supplies must be equal to or greater than 11.5V. See Table 6 for the minimum requirements on these supplies for each Analog Input Range. The AD7366 requires a low voltage 4.75V to 5. power the ADC core. Table 6. Reference and Supply Requirements for each Analog ...

Page 12

... AGND Figure 4 ADC Conversion Phase ANALOG INPUTS Each ADC in the AD7366 has two Single Ended Analog Inputs. Figure 5 shows the equivalent circuit of the analog input structure of the AD7366. The two diodes provide ESD protection. Care must be taken to ensure that the analog input signals never exceed the supply rails by more than 300 mV ...

Page 13

... The reference buffer requires 500 µs to power up and charge the 680nF decoupling capacitor during the power-up time. The AD7366 is specified for a 2 reference range. When a 3V reference is selected, the ranges are ±12 V, ±6 V, and +12 V. For these ranges, the V equal to or greater than the +12V & ...

Page 14

... AD7366 MODES OF OPERATION The mode of operation of the AD7366 is selected by the (logic) state of the CONVST signal at the end of a conversion. There are two possible modes of operation: normal mode and shut-down mode. These modes of operation are designed to provide flexible power management options. These options can be chosen to optimize the power dissipation/throughput rate ratio for differing application requirements ...

Page 15

... BUSY signal goes low thus A CAP the part enters shut-down. Once supplies are applied to the AD7366, enough time must be allowed for any external reference to power up and charge the various reference buffer decoupling capacitors to their final values. Rev. PrG | Page ...

Page 16

... If the falling edge of SCLK coincides with the falling edge then the falling edge of SCLK is not acknowledged by the AD7366, and the next falling edge of the SCLK will be the first registered after the falling edges of the CS . The CS pin can be brought low before the BUSY signal goes low to indicate the end of a conversion ...

Page 17

... AD7366BRUZ −40°C to +85°C 1 AD7366BRUZ-REEL7 −40°C to +85°C 1 AD7366-5ARUZ −40°C to +85°C 1 AD7366-5ARUZ-REEL7 −40°C to +85°C 1 AD7366-5BRUZ −40°C to +85°C 1 AD7366-5BRUZ-REEL7 −40°C to +85° Pb-free part. ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...

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