AD9484BCPZ-500 Analog Devices Inc, AD9484BCPZ-500 Datasheet

no-image

AD9484BCPZ-500

Manufacturer Part Number
AD9484BCPZ-500
Description
IC ADC 8BIT 500MSPS 56LFCSP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD9484BCPZ-500

Sampling Rate
500MSPS
Input Channel Type
Differential, Single Ended
Data Interface
Serial, SPI
Supply Current
283mA
Digital Ic Case Style
LFCSP
No. Of Pins
56
Operating Temperature Range
-40°C To +85°C
Rohs Compliant
Yes
Resolution (bits)
8bit
Number Of Elements
1
Resolution
8Bit
Architecture
Pipelined
Input Type
Voltage
Differential Input
Yes
Power Supply Requirement
Single
Single Supply Voltage (typ)
1.8V
Single Supply Voltage (max)
1.9V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Power Dissipation
720mW
Differential Linearity Error
±0.25LSB
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
56
Package Type
LFCSP EP
Input Signal Type
Differential
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
FEATURES
SNR = 47 dBFS at f
ENOB of 7.5 bits at f
SFDR = 79 dBc at f
Integrated input buffer
Excellent linearity
LVDS at 500 MSPS (ANSI-644 levels)
1 GHz full power analog bandwidth
On-chip reference, no external decoupling required
Low power dissipation
Programmable (nominal) input voltage range
1.8 V analog and digital supply operation
Selectable output data format (offset binary, twos
Clock duty cycle stabilizer
Integrated data capture clock
APPLICATIONS
Wireless and wired broadband communications
Cable reverse path
Communications test equipment
Low cost digital oscilloscopes
Satellite subsystems
Power amplifier linearization
GENERAL DESCRIPTION
The
converter (ADC) optimized for high performance, low power,
and ease of use. The part operates at up to a 500 MSPS conver-
sion rate and is optimized for outstanding dynamic performance
in wideband carrier and broadband systems. All necessary
functions, including a sample-and-hold and voltage reference,
are included on the chip to provide a complete signal conversion
solution. The VREF pin can be used to monitor the internal
reference or provide an external voltage reference (external
reference mode must be enabled through the SPI port).
The ADC requires a 1.8 V analog voltage supply and a differen-
tial clock for full performance operation. The digital outputs are
LVDS (ANSI-644) compatible and support twos complement,
offset binary format, or Gray code. A data clock output is available
for proper output data timing.
Rev.
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.
DNL = ±0.1 LSB typical
INL = ±0.1 LSB typical
670 mW at 500 MSPS—LVDS SDR output
1.18 V p-p to 1.6 V p-p, 1.5 V p-p nominal
complement, Gray code)
0
AD9484
is an 8-bit, monolithic, sampling analog-to-digital
IN
IN
IN
up to 250 MHz at 500 MSPS (−1.0 dBFS)
up to 250 MHz at 500 MSPS
up to 250 MHz at 500 MSPS (−1.0 dBFS)
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
Fabricated on an advanced BiCMOS process, the AD9484 is availa-
ble in a 56-lead LFCSP, and is specified over the industrial
temperature range (−40°C to +85°C). This product is protected
under U.S. and international patents.
PRODUCT HIGHLIGHTS
1.
2.
3.
CLK+
CLK–
VIN+
CML
VIN–
High Performance.
Maintains 47 dBFS SNR at 500 MSPS with a 250 MHz input.
Ease of Use.
LVDS output data and output clock signal allow interface
to current FPGA technology. The on-chip reference and
sample-and-hold provide flexibility in system design. Use
of a single 1.8 V supply simplifies system power supply design.
Serial Port Control.
Standard serial port interface supports various product
functions, such as data formatting, power-down, gain
adjust, and output test pattern generation.
TRACK-AND-HOLD
VREF
MANAGEMENT
REFERENCE
FUNCTIONAL BLOCK DIAGRAM
CLOCK
PWDN
SCLK/DFS
©
2011
CORE
SERIAL PORT
ADC
Figure 1.
8-Bit, 500 MSPS,
SDIO
Analog Devices, Inc. All rights reserved.
8
AGND
CSB
STAGING
AD9484
OUTPUT
LVDS
AVDD
AD9484
www.analog.com
8
DRVDD
DRGND
D7± TO D0±
OR+
OR–
DCO+
DCO–

Related parts for AD9484BCPZ-500

AD9484BCPZ-500 Summary of contents

Page 1

FEATURES SNR = 47 dBFS 250 MHz at 500 MSPS IN ENOB of 7.5 bits 250 MHz at 500 MSPS (−1.0 dBFS) IN SFDR = 79 dBc 250 ...

Page 2

AD9484 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 DC Specifications ......................................................................... 3 AC Specifications.......................................................................... 4 Digital Specifications ................................................................... 5 Switching ...

Page 3

SPECIFICATIONS DC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1 −40°C, T MIN Table 1. 1 Parameter RESOLUTION ACCURACY No Missing Codes Offset Error Gain Error Differential Nonlinearity (DNL) Integral Nonlinearity (INL) INTERNAL REFERENCE VREF TEMPERATURE DRIFT ...

Page 4

AD9484 AC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1 −40°C, T MIN Table Parameter SNR f = 30.3 MHz 70.3 MHz 100.3 MHz 250.3 ...

Page 5

DIGITAL SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1 −40°C, T MIN Table 3. Parameter 1 CLOCK INPUTS Logic Compliance Internal Common-Mode Bias Differential Input Voltage High Level Input ( Low Level Input (V ) ...

Page 6

AD9484 SWITCHING SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1 −40°C, T MIN Table 4. Parameter Maximum Conversion Rate Minimum Conversion Rate 1 CLK+ Pulse Width High ( CLK+ Pulse Width Low (t ) ...

Page 7

ABSOLUTE MAXIMUM RATINGS Table 5. Parameter Rating Electrical AVDD to AGND −0 +2.0 V DRVDD to DRGND −0 +2.0 V AGND to DRGND −0 +0.3 V AVDD to DRVDD −2 +2.0 V ...

Page 8

AD9484 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 7. Pin Function Descriptions Pin No. Mnemonic 1 0 AGND 30 34 39, AVDD 24, 47 DRVDD 1 8, 23, 48 DRGND 35 VIN+ ...

Page 9

Pin No. Mnemonic 14 D4+ 15 D5− 16 D5+ 17 D6− 18 D6+ 19 D7− 20 D7+ 21 OR− 22 OR+ 1 Tie AGND and DRGND to a common quiet ground plane. Description D4 True Output. D5 Complement Output. D5 ...

Page 10

AD9484 TYPICAL PERFORMANCE CHARACTERISTICS AVDD = 1.8 V, DRVDD = 1.8 V, rated sample rate 500MSPS –10 30.3MHz AT –1.0dBFS SNR: 46.0dB ENOB: 7.5 BITS –20 SFDR: 82dBc –30 –40 –50 –60 –70 –80 –90 –100 0 20 ...

Page 11

SFDR (dBc), 30.3MHz 80 75 SFDR (dBc), 100.3MHz SNR (dBFS), 30.3MHz 50 SNR (dBFS), 100.3MHz 100 150 200 250 300 350 400 SAMPLE RATE (MSPS) Figure 10. SNR/SFDR vs. Sample Rate; 30.3 ...

Page 12

AD9484 100 IMD3 (dBFS SFDR (dBFS SFDR (dBc –90 –80 –70 –60 –50 –40 AMPLITUDE (dBFS) Figure 16. Two-Tone SFDR vs. Input Amplitude; 500 MSPS, 119.5 MHz, 122.5 MHz 90 ...

Page 13

EQUIVALENT CIRCUITS AVDD AVDD 0.9V 15kΩ 15kΩ CLK+ Figure 20. Clock Inputs AVDD CML AVDD VIN+ 500Ω AVDD 500Ω SPI CONTROLLED VIN+ Figure 21. Analog Input DC Equivalent Circuit (V DRVDD 350Ω SCLK/DFS 30kΩ Figure 22. Equivalent SCLK/DFS, PDWN Input ...

Page 14

AD9484 THEORY OF OPERATION The AD9484 architecture consists of a front-end sample-and- hold amplifier (SHA) followed by a pipelined switched capacitor ADC. The quantized outputs from each stage are combined into a final 8-bit result in the digital correction logic. ...

Page 15

ANALOG INPUT ANALOG INPUT CLOCK INPUT CLOCK INPUT 1 50Ω RESISTORS ARE OPTIONAL. CLOCK INPUT CLOCK INPUT 1 50Ω RESISTORS ARE OPTIONAL. CLOCK INPUT CONSIDERATIONS For optimum performance, drive the AD9484 sample clock inputs (CLK+ and CLK−) with a differential ...

Page 16

AD9484 V CC OPTIONAL 0.1µF 1kΩ AD951x CLOCK CMOS DRIVER INPUT 1 1kΩ 50Ω 0.1µF 1 50Ω RESISTOR IS OPTIONAL. Figure 34. Single-Ended 1.8 V CMOS Input Clock (Up to 200 MHz) Clock Duty Cycle Considerations Typical high speed ADCs ...

Page 17

An example of the LVDS output using the ANSI standard (default) data eye and a time interval error (TIE) jitter histogram with trace lengths less than 24 inches on ...

Page 18

AD9484 AD9484 CONFIGURATION USING THE SPI The AD9484 SPI allows the user to configure the converter for specific functions or operations through a structured register space inside the ADC. This gives the user added flexibility to customize device operation depending ...

Page 19

Table 10. Serial Timing Definitions Parameter Minimum (ns CLK HIGH t 16 LOW t 1 EN_SDIO t 5 DIS_SDIO Table 11. Output Data Format ...

Page 20

AD9484 MEMORY MAP READING THE MEMORY MAP TABLE Each row in the memory map table (see Table 12) has eight address locations. The memory map is roughly divided into three sections: chip configuration register map (Address 0x00 to Address 0x02), ...

Page 21

Addr. Bit 7 (Hex) Register Name (MSB) 10 Offset 0D TEST_IO (For user-defined mode only, set Bits[3:0] = 1000 Pattern 1 only 01 = toggle P1/ toggle P1/0000 11 = toggle P1/P2/ 0000 0F AIN_CONFIG 0 ...

Page 22

AD9484 Addr. Bit 7 (Hex) Register Name (MSB) 18 FLEX_VREF VREF select 00 = internal V (20 kΩ pull-down import V (0. 0 VREF pin export V (from internal reference ...

Page 23

... OUTLINE DIMENSIONS PIN 1 INDICATOR TOP VIEW 1.00 12° MAX 0.85 0.80 SEATING PLANE ORDERING GUIDE 1 Model Temperature Range AD9484BCPZ-500 −40°C to +85°C AD9484BCPZRL7-500 −40°C to +85°C AD9484-500EBZ RoHS Compliant Part. 8.10 0.60 MAX 8.00 SQ 7.90 0.60 MAX 43 42 0.50 BSC 7 ...

Page 24

AD9484 NOTES ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D09615-0-3/11(0) Rev Page ...

Related keywords