AD9634BCPZRL7-250 Analog Devices, Inc., AD9634BCPZRL7-250 Datasheet

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AD9634BCPZRL7-250

Manufacturer Part Number
AD9634BCPZRL7-250
Description
12-bit, 170 Msps/210 Msps/250 Msps, 1.8 V Analog-to-digital Converter
Manufacturer
Analog Devices, Inc.
Datasheet
FEATURES
SNR = 69.7 dBFS at 185 MHz A
SFDR = 87 dBc at 185 MHz A
−150.6 dBFS/Hz input noise at 185 MHz, −1 dBFS A
Total power consumption: 360 mW at 250 MSPS
1.8 V supply voltages
LVDS (ANSI-644 levels) outputs
Integer 1-to-8 input clock divider (625 MHz maximum input)
Sample rates of up to 250 MSPS
IF sampling frequencies of up to 350 MHz
Internal ADC voltage reference
Flexible analog input range
ADC clock duty cycle stabilizer
Serial port control
Energy-saving power-down modes
User-configurable, built-in self test (BIST) capability
APPLICATIONS
Communications
Diversity radio systems
Multimode digital receivers (3G)
I/Q demodulation systems
Smart antenna systems
General-purpose software radios
Ultrasound equipment
Broadband data applications
GENERAL DESCRIPTION
The
sampling speeds of up to 250 MSPS. The
support communications applications where low cost, small size,
wide bandwidth, and versatility are desired.
The ADC core features a multistage, differential pipelined
architecture with integrated output error correction logic. The
ADC features wide bandwidth inputs that can support a variety
of user-selectable input ranges. An integrated voltage reference
eases design considerations. A duty cycle stabilizer (DCS) is
provided to compensate for variations in the ADC clock duty cycle,
allowing the converter to maintain excellent performance.
The ADC output data are routed directly to the external 12-bit
LVDS output port.
Flexible power-down options allow significant power savings,
when desired.
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.
250 MSPS
1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal)
TD-SCDMA, WiMAX, W-CDMA, CDMA2000, GSM, EDGE, LTE
AD9634
is a 12-bit, analog-to-digital converter (ADC) with
IN
and 250 MSPS
IN
and 250 MSPS
AD9634
is designed to
IN
12-Bit, 170 MSPS/210 MSPS/250 MSPS,
and
1.8 V Analog-to-Digital Converter
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Programming for setup and control is accomplished using a
3-wire, SPI-compatible serial interface.
The
the industrial temperature range of −40°C to +85°C. This product
is protected by a U.S. patent.
PRODUCT HIGHLIGHTS
1. Integrated 12-bit, 170 MSPS/210 MSPS/250 MSPS ADC.
2. Fast overrange and threshold detect.
3. Proprietary differential input maintains excellent SNR
4. 3-pin, 1.8 V SPI port for register programming and readback.
5. Pin compatibility with the AD9642, allowing a simple
VIN+
VIN–
VCM
performance for input frequencies of up to 350 MHz.
migration up to 14 bits, and with the AD6672.
AD9634
REFERENCE
AD9634
SCLK
FUNCTIONAL BLOCK DIAGRAM
is available in a 32-lead LFCSP and is specified over
SERIAL PORT
SDIO
AVDD
PIPELINE
12-BIT
ADC
CSB
©2011 Analog Devices, Inc. All rights reserved.
AGND
Figure 1.
12
CLOCK DIVIDER
CLK+
PARALLEL
1-TO-8
DDR LVDS
DRIVERS
AND
DRVDD
CLK–
AD9634
www.analog.com
D0±/D1±
D10±/D11±
DCO±
OR±
.
.
.

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AD9634BCPZRL7-250 Summary of contents

Page 1

... Fax: 781.461.3113 AD9634 AVDD AGND DRVDD PIPELINE 12 12-BIT ADC PARALLEL DDR LVDS AND DRIVERS 1-TO-8 SERIAL PORT CLOCK DIVIDER SDIO CSB CLK+ CLK– Figure 1. www.analog.com ©2011 Analog Devices, Inc. All rights reserved. D0±/D1± D10±/D11± DCO± OR± ...

Page 2

AD9634 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 ADC DC Specifications................................................................. 3 ADC AC Specifications ................................................................. 4 Digital Specifications ................................................................... ...

Page 3

SPECIFICATIONS ADC DC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.75 V p-p full scale input range, DCS enabled, unless otherwise noted. Table 1. Parameter Temperature RESOLUTION Full ACCURACY ...

Page 4

AD9634 ADC AC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.75 V p-p full-scale input range, unless otherwise noted. Table 2. 1 Parameter SIGNAL-TO-NOISE RATIO (SNR ...

Page 5

Parameter TWO-TONE SFDR f = 184.1 MHz, 187.1 MHz (−7 dBFS FULL POWER BANDWIDTH 3 NOISE BANDWIDTH 1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions. 2 ...

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AD9634 DIGITAL SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.0 V internal reference, DCS enabled, unless otherwise noted. Table 3. Parameter DIFFERENTIAL CLOCK INPUTS (CLK+, CLK−) Logic Compliance Internal ...

Page 7

SWITCHING SPECIFICATIONS Table 4. Parameter 1 CLOCK INPUT PARAMETERS Input Clock Rate 2 Conversion Rate DCS Enabled DCS Disabled CLK Period, Divide-by-1 Mode (t ) CLK CLK Pulse Width High ( Divide-by-1 Mode, DCS Enabled Divide-by-1 Mode, DCS ...

Page 8

AD9634 TIMING SPECIFICATIONS Table 5. Parameter Test Conditions/Comments SPI TIMING REQUIREMENTS See Figure 58 for the SPI timing diagram t Setup time between the data and the rising edge of SCLK DS t Hold time between the data and the ...

Page 9

ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Electrical AVDD to AGND DRVDD to AGND VIN+, VIN− to AGND CLK+, CLK− to AGND VCM to AGND CSB to AGND SCLK to AGND SDIO to AGND D0±/D1± through D10±/D11± to AGND DCO+/DCO− to ...

Page 10

AD9634 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS NOTES 1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. 2. THE EXPOSED THERMAL PADDLE ON THE BOTTOM OF THE PACKAGE Table 8. Pin Function Descriptions Pin No. Mnemonic ADC Power ...

Page 11

Pin No. Mnemonic SPI Control 23 SCLK 22 SDIO 24 CSB Type Description Input SPI Serial Clock. Input/Output SPI Serial Data I/O. Input SPI Chip Select (Active Low). Rev Page AD9634 ...

Page 12

AD9634 TYPICAL PERFORMANCE CHARACTERISTICS AVDD = 1.8 V, DRVDD = 1.8 V, sample rate = maximum sample rate per speed grade, DCS enabled, 1.75 V p-p differential input, VIN = −1.0 dBFS, 32k sample 25°C, unless otherwise noted. ...

Page 13

SFDR (dBc) –40 IMD3 (dBc) –60 –80 SFDR (dBFS) –100 IMD3 (dBFS) –120 –90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3 –7.0 INPUT AMPLITUDE (dBFS) Figure 10. AD9634-170 Two-Tone SFDR/IMD3 vs. Input Amplitude ( ...

Page 14

AD9634 0 210MSPS 90.1MHz @ –1.0dBFS SNR = 69.1dB (70.1dBFS) –20 SFDR = 92dBc –40 –60 SECOND THIRD HARMONIC HARMONIC –80 –100 –120 –140 FREQUENCY (MHz) Figure 16. AD9634-210 Single-Tone FFT with f 0 210MSPS ...

Page 15

SFDR (dBc) –40 IMD3 (dBc) –60 –80 SFDR (dBFS) –100 IMD3 (dBFS) –120 –90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3 –7.0 INPUT AMPLITUDE (dBFS) Figure 22. AD9634-210 Two-Tone SFDR/IMD3 vs. Input Amplitude ( ...

Page 16

AD9634 0 250MSPS 90.1MHz @ –1.0dBFS SNR = 69.0dB (70.0dBFS) –20 SFDR = 89dBc –40 –60 SECOND THIRD HARMONIC HARMONIC –80 –100 –120 –140 FREQUENCY (MHz) Figure 28. AD9634-250 Single-Tone FFT with f 0 250MSPS 185.1MHz ...

Page 17

SFDR (dBc) –40 IMD3 (dBc) –60 –80 SFDR (dBFS) –100 IMD3 (dBFS) –120 –90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3 –7.0 INPUT AMPLITUDE (dBFS) Figure 34. AD9634-250 Two-Tone SFDR/IMD3 vs. Input Amplitude ( ...

Page 18

AD9634 EQUIVALENT CIRCUITS AVDD VIN Figure 40. Equivalent Analog Input Circuit AVDD AVDD 0.9V 15kΩ 15kΩ CLK+ Figure 41. Equivalent Clock lnput Circuit DRVDD V+ V– DATAOUT– DATAOUT+ V– V+ Figure 42. Equivalent LVDS Output Circuit AVDD CLK– Rev. 0 ...

Page 19

THEORY OF OPERATION The AD9634 can sample any f /2 frequency segment from 250 MHz using appropriate low-pass or band-pass filtering at the ADC inputs with little loss in ADC performance. Programming and control of the AD9634 ...

Page 20

AD9634 Differential Input Configurations Optimum performance can be achieved when driving the AD9634 in a differential input configuration. For baseband applications, the AD8138, ADA4937-1, and differential drivers provide excellent performance and a flexible interface to the ADC. The output common-mode ...

Page 21

AD8375 NOTES 1. ALL INDUCTORS ARE COILCRAFT 0603CS COMPONENTS WITH THE EXCEPTION OF THE 1µH CHOKE INDUCTORS (0603LS). 2. FILTER VALUES SHOWN ARE FOR A 20MHz BANDWIDTH FILTER CENTERED AT 140MHz. An alternative to using a transformer-coupled input at frequencies ...

Page 22

AD9634 A third option couple a differential LVDS signal to the sample clock input pins, as shown in Figure 55. The AD9510, AD9511,AD9512, AD9513, AD9514, AD9515, AD9516, AD9517, AD9518, AD9520, AD9522, AD9523, AD9524 excellent jitter performance. 0.1µF ...

Page 23

POWER DISSIPATION AND STANDBY MODE As shown in Figure 57, the power dissipated by the proportional to its sample rate. The data in Figure 57 was taken using the same operating conditions as those used for the Typical Performance Characteristics ...

Page 24

AD9634 SERIAL PORT INTERFACE (SPI) The AD9634 serial port interface (SPI) allows the user to configure the converter for specific functions or operations through a structured register space provided inside the ADC. The SPI offers added flexibility and customization, depending ...

Page 25

SPI ACCESSIBLE FEATURES Table 12 provides a brief description of the general features that are accessible via the SPI. These features are described in detail in AN-877 Application Note, Interfacing to High Speed ADCs via S PI ...

Page 26

AD9634 MEMORY MAP READING THE MEMORY MAP REGISTER TABLE Each row in the memory map register table has eight bit locations. The memory map is roughly divided into three sections: the chip configuration registers (Address 0x00 to Address 0x02), the ...

Page 27

MEMORY MAP REGISTER TABLE All address and bit locations that are not included in Table 13 are not currently supported for this device. Table 13. Memory Map Registers Addr Register Bit 7 (Hex) Name (MSB) Bit 6 Chip Configuration Registers ...

Page 28

AD9634 Addr Register Bit 7 Bit 6 (Hex) Name (MSB) 0x0E BIST enable Open Open 0x10 Offset adjust Open Open 0x14 Output mode Open Open 0x15 Output adjust Open Open 0x16 Clock phase Invert Open control DCO clock 0x17 Open ...

Page 29

APPLICATIONS INFORMATION DESIGN GUIDELINES Before starting system-level design and layout of the AD9634 recommended that the designer become familiar with these guidelines, which describe the special circuit connections and layout requirements needed for certain pins. Power and Ground ...

Page 30

... INDICATOR 0.80 0.75 0.70 SEATING PLANE ORDERING GUIDE 1 Model Temperature Range AD9634BCPZ-250 −40°C to +85°C AD9634BCPZRL7-250 −40°C to +85°C AD9634BCPZ-210 −40°C to +85°C AD9634BCPZRL7-210 −40°C to +85°C AD9634BCPZ-170 −40°C to +85°C AD9634BCPZRL7-170 −40°C to +85°C AD9634-170EBZ AD9634-210EBZ AD9634-250EBZ RoHS Compliant Part ...

Page 31

NOTES Rev Page AD9634 ...

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... AD9634 NOTES ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D09996-0-7/11(0) Rev Page ...

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