ASD5020L640INT Arctic Silicon Devices, ASD5020L640INT Datasheet

ADC (A/D Converters) Mul-Md 12bit/640MSPS 8-bit 1000 MSPS ADC

ASD5020L640INT

Manufacturer Part Number
ASD5020L640INT
Description
ADC (A/D Converters) Mul-Md 12bit/640MSPS 8-bit 1000 MSPS ADC
Manufacturer
Arctic Silicon Devices
Datasheet

Specifications of ASD5020L640INT

Number Of Converters
1
Number Of Adc Inputs
2
Conversion Rate
640 MSPs
Resolution
12 bit
Snr
70 dB
Voltage Reference
1 V
Supply Voltage (max)
2 V
Supply Voltage (min)
1.7 V
Maximum Power Dissipation
490 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN-48
Input Voltage
1.8 V
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Preliminary Product Specification
Vestre Rosten 81, 7075 Tiller, Norway
Phone: +47 73 10 29 00, Fax: +47 73 10 29 19
Features
Applications
ASD5020 High Speed Mode
Multi-Mode 12-bit 640 MSPS / 8-bit 1000 MSPS Analog to Digital Converter
12-bit Modes
8-bit Modes
Integrated Cross Point Switches with instantaneous
switching
Internal low jitter programmable Clock Divider
Ultra Low Power Dissipation
0.5 µs start-up time from Sleep, 15 µs from Power
Down
Internal reference circuitry with no external
components required
Coarse and fine gain control
Digital fine gain adjustment for each ADC
Internal offset correction
1.8 V supply voltage
1.7 - 3.6 V CMOS logic on control interface pins
Serial LVDS/RSDS output
7mm x 7mm 48 QFN Package
Precision Oscilloscopes
Diversity Receivers
Hi-End Ultrasound
Communication Testing
Non Destructive Testing
Single Channel Mode: F
Dual Channel Mode: F
Quad Channel Mode: F
SNR: 71 dB, SFDR: 65 dB
Single Channel Mode: F
Dual Channel Mode: F
Quad Channel Mode: F
SNR: 49 dB, SFDR: 65 dB
490mW including I/O at 640 MSPS
12, 14, 16 and Dual 8-bit modes available
Smax
Smax
Smax
Smax
Smax
Smax
IP1
IN1
IP2
IN2
IP3
IN3
IP4
IN4
= 160 MSPS
= 250 MSPS
= 320 MSPS
= 500 MSPS
= 640 MSPS
= 1000 MSPS
Serial control
interface
Page 1 of 34
Figure 1: Functional Block Diagram
ADC 1
ADC 2
ADC 3
ADC 4
Description
The ASD5020 is a versatile high performance low power
analog-to-digital converter (ADC), utilizing time-interleaving
to increase sampling rate. Integrated Cross Point Switches
activate the input selected by the user.
In single channel mode, one of the four inputs can be
selected as valid input to the single ADC channel. In dual
channel mode, any two of the four inputs can be selected to
each ADC channel. In quad channel mode, any input can be
assigned to any ADC channel.
An internal, low jitter and programmable clock divider makes
it possible to use a single clock source for all operational
modes.
The ASD5020 is based on a proprietary structure, and
employs internal reference circuitry, a serial control interface
and
synchronization clocks are supplied for data capture at the
receiver. Internal digital fine gain can be set separately for
each ADC to calibrate for gain errors.
Various modes and configuration settings can be applied to
the ADC through the serial control interface (SPI). Each
channel can be powered down independently and output
data format can be selected through this interface. A full chip
idle mode can be set by a single external pin. Register
settings determine the exact function of this pin.
ASD5020 is designed to interface easily with Field
Programmable Gate Arrays (FPGAs) from several vendors.
Interleave
a
1/2/4/8
Divide
Clock
serial
Digital
Digital
Digital
Digital
gain
gain
gain
gain
PLL
LVDS
output
LVDS
LVDS
LVDS
LVDS
LVDS
Org. No: NO 991 265 163MVA
data.
FCLKP
FCLKN
LCLKP
LCLKN
DP1A
DN1A
DP1B
DN1B
DP2A
DN2A
DP2B
DN2B
DP3A
DN3A
DP3B
DN3B
DP4A
DN4A
DP4B
DN4B
www.arcticsilicon.com
Data
and
frame

Related parts for ASD5020L640INT

ASD5020L640INT Summary of contents

Page 1

Preliminary Product Specification ASD5020 High Speed Mode Multi-Mode 12-bit 640 MSPS / 8-bit 1000 MSPS Analog to Digital Converter Features 12-bit Modes ● Single Channel Mode: F ● Dual Channel Mode: F ● Quad Channel Mode: F ● SNR: 71 ...

Page 2

Preliminary Product Specification Table of Contents Blizzard Product family: Products and Relations..................................................................................................................3 Specifications........................................................................................................................................................................ 4 ASD5020 High Speed Mode........................................................................................................................................... 5 Digital and Switching Specifications...................................................................................................................................... 6 Absolute Maximum Ratings.................................................................................................................................................. 7 Pin Configuration and Description......................................................................................................................................... 8 Startup Initialization............................................................................................................................................................. 10 Serial Interface.................................................................................................................................................................... 10 Timing ...

Page 3

Preliminary Product Specification Blizzard Product family: Products and Relations ASD5020 is a part of the ASD Blizzard family of ADCs for Instrumentation applications, with two main modes: High Speed Mode (ASD5020HS): 12-bit up to 640MSPS • Precision Mode (ASD5020PM): 14-bit ...

Page 4

Preliminary Product Specification Specifications AVDD=DVDD=OVDD=1.8V 160 MSPS, Quad channel 12-bit High Speed Mode, 50% clock duty cycle, -1dBFS 70 MHz input signal, S 1x/0dB digital gain (fine and coarse), unless otherwise noted Parameter DC accuracy No missing codes ...

Page 5

Preliminary Product Specification ASD5020 High Speed Mode AVDD=DVDD=OVDD=1.8V, 50% clock duty cycle, -1dBFS 70 MHz input signal, Gain = 1X, 12-bit output, RSDS output data levels, unless otherwise noted Parameter Performance SNR Signal to Noise Ratio Single Channel Mode , ...

Page 6

Preliminary Product Specification Digital and Switching Specifications AVDD= DVDD=OVDD=1.8V, RSDS output data levels, unless otherwise noted Parameter Clock Inputs DC Duty Cycle Compliance V Differential input voltage swing CK,diff V Differential input voltage swing, sine wave clock input CK,sine V ...

Page 7

Preliminary Product Specification Absolute Maximum Ratings Applying voltages to the pins beyond those specified in Table 1 could cause permanent damage to the circuit. Pin AVDD DVDD OVDD AVSS / DVSS Analog inputs and outputs CLKx LVDS outputs Digital inputs ...

Page 8

Preliminary Product Specification Pin Configuration and Description AVDD 1 CSN 2 SDATA 3 4 SCLK RESETN DVDD 7 DVSS 8 9 DP1A DN1A 10 DP1B 11 DN1B 12 PIN NAME AVDD Analog power supply, 1.8V CSN Chip ...

Page 9

Preliminary Product Specification PIN NAME DP2B LVDS channel 2B, positive output DN2B LVDS channel 2B, negative output LCKP LVDS bit clock, positive output LCKN LVDS bit clock, negative output FCLKP LVDS frame clock (1X), positive output FCLKN LVDS frame clock ...

Page 10

Preliminary Product Specification Startup Initialization As part of the ASD5020 power-on sequence both a reset and a power down cycle have to be applied to ensure correct start-up initialization. Reset can be done in one of two ways ...

Page 11

Preliminary Product Specification Timing Diagrams N+31 Analog input Input clock T LVDS LCLK P LCLK N FCLK N FCLK P D10 D11 DxnA N-4 N-4 N-2 N-2 N-2 N-2 N-2 N-2 N-2 N-2 N-2 N-2 N-2 N-2 ...

Page 12

Preliminary Product Specification N+126 N+124 Analog input Input clock T LVDS LCLK P LCLK N FCLK N FCLK P D10 D11 Dx1A N-16 N-16 N-8 N-8 N-8 N-8 N-8 N-8 N-8 N-8 N-8 N-8 N-8 N-8 D10 ...

Page 13

Preliminary Product Specification Register Map Name Description rst * Self-clearing software reset. sleep4_ch<4:1> Channel-specific sleep mode for a Quad Channel setup. sleep2_ch<2:1> Channel-specific sleep mode for a Dual Channel setup. sleep1_ch1 Channel-specific sleep mode for a Single Channel setup. sleep ...

Page 14

Preliminary Product Specification Name Description in a Dual Channel setup. cgain1_ch1 <3:0> Programmable coarse gain channel Single Channel setup. jitter_ctrl<7:0> Clock jitter adjustment. precision_mode * Enable Quad Channel 14 bits precision mode. high_speed_mode * Enable high speed ...

Page 15

Preliminary Product Specification Register Description Software Reset Name Description rst Self-clearing software reset. Setting the rst register bit to '1', restores the default value of all the internal registers including the rst register bit itself. Modes of Operation Name Description ...

Page 16

Preliminary Product Specification Input Select Name Description inp_sel_adc1<4:0> Input select for adc 1. inp_sel_adc2<4:0> Input select for adc 2. inp_sel_adc3<4:0> Input select for adc 3. inp_sel_adc4<4:0> Input select for adc 4. Each ADC is connected to the four input signals ...

Page 17

Preliminary Product Specification Full-scale Control Name Description fs_cntrl<5:0> Fine adjust ADC full scale range The full-scale voltage range of ASD5020 can be adjusted using an internal 6-bit DAC controlled by the fs_cntrl register. Changing the value in the register by ...

Page 18

Preliminary Product Specification The ext_vcm_bc register controls the driving strength in the buffer supplying the voltage on the VCM pin. If this pin is not in use, the buffer can be switched off. If current is drawn from the VCM ...

Page 19

Preliminary Product Specification Start-up and Clock Jitter Control Name Description startup_ctrl<2:0> Controls start-up time. jitter_ctrl<7:0> Clock jitter adjustment. To optimize start up time, a register is provided where the start-up time in number of clock cycles can be set. Some ...

Page 20

Preliminary Product Specification jitter_ctrl<7:0> allows the user to set a trade-off between power consumption and clock jitter. If all bits in the register is set low, the clock signal is stopped. The clock jitter depends on the number of bits ...

Page 21

Preliminary Product Specification LVDS Output Configuration and Control Name Description lvds_output_mode Sets the number of LVDS output bits. <2:0> low_clk_freq Low clock frequency used. lvds_advance Advance LVDS data bits and frame clock by one clock cycle lvds_delay Delay LVDS data ...

Page 22

Preliminary Product Specification Table 16: Maximum sampling rate vs number of output bits for different ASD5020 configurations Number of bits Dual 8 Mode of operation High speed, single channel High speed, dual channel High speed, quad channel ...

Page 23

Preliminary Product Specification To ease timing in the receiver when using multiple ASD5020, the device has the option to adjust the timing of the output data and the frame clock. The propagation delay with respect to the ADC input clock ...

Page 24

Preliminary Product Specification LVDS Drive Strength Programmability Name Description ilvds_lclk<2:0> LVDS current drive programmability for LCLKP and LCLKN pins. ilvds_frame<2:0> LVDS current drive programmability for FCLKP and FCLKN pins. ilvds_dat<2:0> LVDS current drive programmability for output data pins. The current ...

Page 25

Preliminary Product Specification Table 20: LVDS output internal termination for LCLK, FCLK and data ASD5020 term_*<2:0> LVDS Internal Termination 000 Termination disabled 001 260 010 150 011 94 100 125 101 80 110 66 111 55 rev 2.0, 2010.11.08 Page ...

Page 26

Preliminary Product Specification Power Mode Control Name Description sleep4_ch<4:1> Channel-specific sleep mode for a Quad Channel setup. sleep2_ch<2:1> Channel-specific sleep mode for a Dual Channel setup. sleep1_ch1 Channel-specific sleep mode for a Single Channel setup. sleep Go to sleep-mode. pd ...

Page 27

Preliminary Product Specification Programmable Gain Name Description cgain_cfg Configures the coarse gain setting fine_gain_en Enable use of fine gain. cgain4_ch1 <3:0> Programmable coarse gain channel Quad Channel setup. cgain4_ch2 <3:0> Programmable coarse gain channel ...

Page 28

Preliminary Product Specification cgain_cfg There is a digital fine gain implemented for each ADC branch to adjust the fine gain errors between the branches. The gain is controlled by fgain_branch* as defined in table 23. For the high speed interleaved ...

Page 29

Preliminary Product Specification Analog Input Invert Name Description invert4_ch<4:1> Channel specific swapping of the analog input signal for a Quad Channel setup. invert2_ch<2:1> Channel specific swapping of the analog input signal for a Dual Channel setup. invert1_ch1 Channel specific swapping ...

Page 30

Preliminary Product Specification Theory of Operation ASD5020 is a multi Mode high-speed, CMOS ADC, consisting of 8 ADC branches, configured in different channel modes, using interleaving to achieve high speed sampling. For all practical purposes, the device can be considered ...

Page 31

Preliminary Product Specification side of the resistors may be used to provide dynamic charging currents and may improve performance. The resistors form a low pass filter with the capacitor, and values must therefore be determined by requirements for the application. ...

Page 32

Preliminary Product Specification all circuitry in the clock distribution utmost importance to avoid crosstalk between the ADC output bits and the clock and between the analog input signal and the clock since such crosstalk often results in ...

Page 33

Preliminary Product Specification Package Mechanical Data QFN48 Pin 1 ID (Top side Symbol Min A 0 5. 0.6 ASD5020 D D2 Pin 1 ID Radius ...

Page 34

... Product ASD5020 Preliminary Product Specification Ordering information Model Temp. range ASD5020L640INT -40 to +85 °C (1) MSL, Peak Temp: The moisture sensitivity level rating classified according to the JEDEC industry standard and to peak solder temperature. Datasheet status Objective Product Specification: The values and functionality describe design targets only. Specifications and functionality can be changed without notice Preliminary Product Specification: The specifications are based on initial design results ...

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