AD7352BRUZ-500RL7 Analog Devices Inc, AD7352BRUZ-500RL7 Datasheet

no-image

AD7352BRUZ-500RL7

Manufacturer Part Number
AD7352BRUZ-500RL7
Description
12-Bit Dual Diff Simult 3 MSPS ADC I.C.
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7352BRUZ-500RL7

Design Resources
DC-Coupled, Single-Ended-to-Differential Conversion Using AD8138 and AD7352 (CN0040)
Number Of Bits
12
Sampling Rate (per Second)
3M
Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
2
Power Dissipation (max)
45mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Dual 12-bit SAR ADC
Simultaneous sampling
Throughput rate: 3 MSPS per channel
Specified for V
No conversion latency
Power dissipation: 26 mW at 3 MSPS
On-chip reference: 2.048 V ± 0.25%, 6 ppm/°C
Dual conversion with read
High speed serial interface: SPI-/QSPI™-/MICROWIRE™-/ DSP-
−40°C to +125°C operation
Available in a 16-lead TSSOP
GENERAL DESCRIPTION
The AD7352
approximation ADC that operates from a single 2.5 V power
supply and features throughput rates up to 3 MSPS. The part
contains two ADCs, each preceded by a low noise, wide band-
width track-and-hold circuit that can handle input frequencies
in excess of 110 MHz.
The conversion process and data acquisition use standard
control inputs allowing for easy interfacing to microprocessors
or DSPs. The input signal is sampled on the falling edge of CS ;
and a conversion is also initiated at this point. The conversion
time is determined by the SCLK frequency.
The AD7352 uses advanced design techniques to achieve very
low power dissipation at high throughput rates. With a 2.5 V
supply and a 3 MSPS throughput rate, the part consumes 10 mA
typically. The part also offers a flexible power/throughput rate
management options.
The analog input range for the part is the differential common-
mode ±V
that can be overdriven when an external reference is preferred.
The AD7352 is available in a 16-lead thin shrink small outline
package (TSSOP).
1
Rev. 0
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.
compatible
REF
/2. The AD7352 has an on-chip 2.048 V reference
1
is a dual, 12-bit, high speed, low power, successive
DD
at 2.5 V
Differential Input, Dual, Simultaneous
Sampling, 3 MSPS, 12-Bit, SAR ADC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
PRODUCT HIGHLIGHTS
1.
2.
3.
Table 1. Related Devices
Generic
AD7356
AD7266
AD7866
AD7366
AD7367
V
V
REF
REF
V
V
INA+
INA–
INB+
INB–
A
B
Two Complete ADC Functions.
These functions allow simultaneous sampling and conversion
of two channels. The conversion result of both channels is
simultaneously available on separate data lines or in suc-
cession on one data line if only one serial port is available.
High Throughput With Low Power Consumption.
The AD7352 offers a 3 MSPS throughput rate with 26 mW
power consumption.
No Conversion Latency.
The AD7352 features two standard successive approx-
imation ADCs with accurate control of the sampling
instant via a CS input and, once off, conversion control.
REF
Resolution
12-bit
12-bit
12-bit
12-bit
14-bit
FUNCTIONAL BLOCK DIAGRAM
AGND
T/H
T/H
BUF
BUF
©2008 Analog Devices, Inc. All rights reserved.
AGND
V
Throughput
5 MSPS
2 MSPS
1 MSPS
1 MSPS
1 MSPS
DD
Figure 1.
APPROXIMATION
APPROXIMATION
SUCCESSIVE
SUCCESSIVE
CONTROL
REFGND
V
LOGIC
12-BIT
12-BIT
ADC
ADC
DRIVE
Analog Input
Differential
Differential/single ended
Single-ended
Single-ended bipolar
Single-ended bipolar
DGND
AD7352
AD7352
www.analog.com
SDATA
SCLK
SDATA
CS
A
B

Related parts for AD7352BRUZ-500RL7

AD7352BRUZ-500RL7 Summary of contents

Page 1

FEATURES Dual 12-bit SAR ADC Simultaneous sampling Throughput rate: 3 MSPS per channel Specified for conversion latency Power dissipation MSPS On-chip reference: 2.048 V ± 0.25%, 6 ppm/°C Dual conversion ...

Page 2

AD7352 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Timing Specifications .................................................................. 5 Absolute Maximum Ratings ............................................................ 6 ESD Caution .................................................................................. 6 ...

Page 3

SPECIFICATIONS V = 2.5 V ± 3.6 V, internal reference = 2.048 DRIVE otherwise noted. Table 2. Parameter DYNAMIC PERFORMANCE 2 Signal-to-Noise Ratio (SNR) Signal-to-(Noise and Distortion) (SINAD) 2 Total Harmonic ...

Page 4

AD7352 Parameter LOGIC INPUTS Input High Voltage (V ) INH Input Low Voltage (V ) INL Input Current ( Input Capacitance ( LOGIC OUTPUTS Output High Voltage ( Output Low Voltage ( ...

Page 5

TIMING SPECIFICATIONS V = 2.5 V ± 3.6 V, internal reference = 2.048 DRIVE Table 3. Parameter Limit MIN MAX f 50 SCLK ...

Page 6

AD7352 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter V to AGND, DGND, REFGND AGND, DGND, REFGND DRIVE DRIVE AGND to DGND to REFGND 1 Analog Input Voltages to AGND 2 Digital Input Voltages to ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description Analog Inputs of ADC A. These analog inputs form a fully differential pair. INA+ INA− REF , REF Reference ...

Page 8

AD7352 TYPICAL PERFORMANCE CHARACTERISTICS 0 16,384 POINT FFT f = 3MSPS SAMPLE f = 1MHz IN –20 SNR = 72.1dB SINAD = 71.6dB THD = –81.5dB –40 –60 –80 –100 –120 0 150 300 450 600 750 900 FREQUENCY (kHz) ...

Page 9

CURRENT LOAD (µA) Figure 9. V vs. Reference Output Current Drive REF 1.0 0.8 0.6 INL MAX 0.4 0.2 DNL MAX 0 INL ...

Page 10

AD7352 TERMINOLOGY Integral Nonlinearity (INL) INL is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale (1 LSB below the first code transition) and ...

Page 11

Intermodulation Distortion (IMD) With inputs consisting of sine waves at two frequencies, fa and fb, any active device with nonlinearities creates distortion products at sum and difference frequencies of mfa ± nfb where ...

Page 12

AD7352 THEORY OF OPERATION CIRCUIT INFORMATION The AD7352 is a high speed, dual, 12-bit, single-supply, successive approximation analog-to-digital converter (ADC). The part operates from a 2.5 V power supply and features throughput rates MSPS. The AD7352 ...

Page 13

For ac applications, removing high frequency components from the analog input signal is recommended by the use low-pass filter on the analog input pins. In applications where harmonic distortion and signal-to-noise ratio are critical, the analog input ...

Page 14

AD7352 DRIVING DIFFERENTIAL INPUTS Differential operation requires V and V IN+ simultaneously with two equal signals that are 180° out of phase. Because not all applications have a signal preconditioned for differential operation, there is often a need to perform ...

Page 15

MODES OF OPERATION The mode of operation of the AD7352 is selected by controlling the logic state of the CS signal during a conversion. There are three possible modes of operation: normal mode, partial power- down mode, and full power-down ...

Page 16

AD7352 FULL POWER-DOWN MODE Full power-down mode is intended for use in applications where throughput rates slower than those in partial power- down mode are required because power-up from a full power- down takes substantially longer than that from a ...

Page 17

POWER-UP TIMES The AD7352 has two power-down modes: partial power-down and full power-down, which are described in detail in the Normal Mode, Partial Power-Down Mode, and Full Power- Down Mode sections. This section deals with the power-up time required when ...

Page 18

AD7352 SERIAL INTERFACE Figure 30 shows the detailed timing diagram for serial interfacing to the AD7352. The serial clock provides the conversion clock and controls the transfer of information from the AD7352 during conversion. The CS signal initiates the data ...

Page 19

APPLICATION HINTS GROUNDING AND LAYOUT The analog and digital supplies to the AD7352 are independent and separately pinned out to minimize coupling between the analog and digital sections of the device. The printed circuit board (PCB) that houses the AD7352 ...

Page 20

... AD7352 OUTLINE DIMENSIONS 0.15 0.05 ORDERING GUIDE Model Temperature Range 1 AD7352BRUZ −40°C to +85°C 1 AD7352BRUZ-500RL7 −40°C to +85°C 1 AD7352BRUZ-RL −40°C to +85°C 1 AD7352YRUZ −40°C to +125°C 1 AD7352YRUZ-500RL7 −40°C to +125°C 1 AD7352YRUZ-RL −40°C to +125° EVAL-AD7352EDZ ...

Related keywords