ADC08D1000DEV/NOPB National Semiconductor, ADC08D1000DEV/NOPB Datasheet

BOARD DEV FOR ADC08D1000

ADC08D1000DEV/NOPB

Manufacturer Part Number
ADC08D1000DEV/NOPB
Description
BOARD DEV FOR ADC08D1000
Manufacturer
National Semiconductor
Series
PowerWise®r

Specifications of ADC08D1000DEV/NOPB

Number Of Adc's
2
Number Of Bits
8
Sampling Rate (per Second)
1G
Data Interface
Serial
Inputs Per Adc
1 Differential
Input Range
870 mVpp
Power (typ) @ Conditions
1.6W @ 1GSPS
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
ADC08D1000
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADC08D1000DEV
© 2009 National Semiconductor Corporation
High Performance, Low Power, Dual 8-Bit, 1 GSPS A/D
Converter
General Description
The ADC08D1000 is a dual, low power, high performance
CMOS analog-to-digital converter that digitizes signals to 8
bits resolution at sampling rates up to 1.3 GSPS. Consuming
a typical 1.6 Watts at 1 GSPS from a single 1.9 Volt supply,
this device is guaranteed to have no missing codes over the
full operating temperature range. The unique folding and in-
terpolating architecture, the fully differential comparator de-
sign, the innovative design of the internal sample-and-hold
amplifier and the self-calibration scheme enable a very flat
response of all dynamic parameters beyond Nyquist, produc-
ing a high 7.4 ENOB with a 500 MHz input signal and a 1 GHz
sample rate while providing a 10
is offset binary and the LVDS digital outputs are compatible
with IEEE 1596.3-1996, with the exception of an adjustable
common mode voltage between 0.8V and 1.2V.
Each converter has a 1:2 demultiplexer that feeds two LVDS
buses and reduces the output data rate on each bus to half
the sampling rate. The two converters can be interleaved and
used as a single 2 GSPS ADC.
The converter typically consumes less than 3.5 mW in the
Power Down Mode and is available in a 128-lead, thermally
enhanced exposed pad LQFP and operates over the Indus-
trial (-40°C
Block Diagram
T
A
+85°C) temperature range.
-18
B.E.R. Output formatting
200974
ADC08D1000
Features
Key Specifications
Applications
Internal Sample-and-Hold
Single +1.9V ±0.1V Operation
Choice of SDR or DDR output clocking
Interleave Mode for 2x Sampling Rate
Multiple ADC Synchronization Capability
Guaranteed No Missing Codes
Serial Interface for Extended Control
Fine Adjustment of Input Full-Scale Range and Offset
Duty Cycle Corrected Sample Clock
Resolution
Max Conversion Rate
Bit Error Rate
ENOB @ 500 MHz Input
DNL
Power Consumption
— Operating
— Power Down Mode
Direct RF Down Conversion
Digital Oscilloscopes
Satellite Set-top boxes
Communications Systems
Test Instrumentation
20097453
±0.15 LSB (typ)
April 16, 2009
1 GSPS (min)
www.national.com
3.5 mW (typ)
7.4 Bits (typ)
1.6 W (typ)
10
-18
8 Bits
(typ)

Related parts for ADC08D1000DEV/NOPB

ADC08D1000DEV/NOPB Summary of contents

Page 1

... Power Down Mode and is available in a 128-lead, thermally enhanced exposed pad LQFP and operates over the Indus- ≤ ≤ trial (-40°C T +85°C) temperature range. A Block Diagram © 2009 National Semiconductor Corporation ADC08D1000 Features ■ Internal Sample-and-Hold ■ Single +1.9V ±0.1V Operation ■ Choice of SDR or DDR output clocking ■ ...

Page 2

Ordering Information Industrial Temperature Range (-40°C < T ADC08D1000CIYB ADC08D1000DEV Pin Configuration * Exposed pad on back of package must be soldered to ground plane to ensure rated performance. www.national.com < +85°C) A 128-Pin Exposed Pad LQFP Development Board 2 ...

Page 3

Pin Descriptions and Equivalent Circuits Pin Functions Pin No. Symbol Equivalent Circuit 3 OutV / SCLK OutEdge / DDR / 4 SDATA DCLK_RST/ 15 DCLK_RST-     30 CAL 29 PDQ   14 FSR/ECE Description Output Voltage Amplitude ...

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Pin Functions Pin No. Symbol CalDly / DES / 127 SCS 18 CLK+ 19 CLK I−     Q− CMO   ...

Page 5

Pin Functions Pin No. Symbol Equivalent Circuit R 32 EXT 34 Tdiode_P 35 Tdiode_N Description External bias resistor connection. Nominal value is 3.3k-Ohms (±0.1%) to ground. See Section 1.1.1. Temperature Diode Positive (Anode) and Negative (Cathode). These pins may be ...

Page 6

Pin Functions Pin No. Symbol DI7− / DQ7− DI7+ / DQ7 DI6− / DQ6− DI6+ / DQ6 DI5− / DQ5− DI5+ / ...

Page 7

Pin Functions Pin No. Symbol Equivalent Circuit 42, 53, 64, 74, 87, 97, DR GND 108, 119 52, 63, 98, NC 109, 120 Description Ground return for Connection. Make no connection to these pins. 7 www.national.com ...

Page 8

... Absolute Maximum Ratings (Notes Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( Supply Difference Voltage on Any Input Pin (Except Voltage (Maintaining Common Mode) Ground Difference |GND - DR GND| Input Current at Any Pin (Note 3) Package Input Current (Note 3) ≤ ...

Page 9

Symbol Parameter Signal-to-Noise Plus Distortion SINAD Ratio SNR Signal-to-Noise Ratio THD Total Harmonic Distortion 2nd Harm Second Harmonic Distortion 3rd Harm Third Harmonic Distortion SFDR Spurious-Free dynamic Range IMD Intermodulation Distortion Out of Range Output Code (In addition to OR ...

Page 10

Symbol Parameter Analog Input Capacitance, Normal operation (Notes 10, 11 Analog Input Capacitance, DES Mode (Notes 10, 11) R Differential Input Resistance IN ANALOG OUTPUT CHARACTERISTICS V Common Mode Output Voltage CMO V input threshold to set DC ...

Page 11

Symbol Parameter V LVDS Differential Output Voltage OD Change in LVDS Output Swing Δ DIFF Between Logic Levels Output Offset Voltage, see Figure Output Offset Voltage, see Figure Output Offset Voltage Change ...

Page 12

Symbol Parameter Differential High to Low Transition t HLT Time t DCLK to Data Output Skew OSK t Data to DCLK Set-Up Time SU t DCLK to Data Hold Time H t Sampling (Aperture) Delay AD t Aperture Jitter AJ ...

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Note 7: To guarantee accuracy required that V achieving rated performance requires that the backside exposed pad be well grounded. Note 8: Typical figures are 25°C, and represent most likely parametric norms. Test limits are ...

Page 14

Specification Definitions APERTURE (SAMPLING) DELAY is that time required after the fall of the clock input for the sampling switch to open. The Sample/Hold circuit effectively stops capturing the input sig- nal and goes into the “hold” mode the aperture ...

Page 15

SIGNAL TO NOISE RATIO (SNR) is the ratio, expressed in dB, of the rms value of the input signal at the output to the rms value of the sum of all other spectral components below one- half the sampling frequency, ...

Page 16

Timing Diagrams www.national.com FIGURE 3. ADC08D1000 Timing — SDR Clocking FIGURE 4. ADC08D1000 Timing — DDR Clocking 16 20097414 20097459 ...

Page 17

FIGURE 5. Serial Interface Timing FIGURE 6. Clock Reset Timing in DDR Mode FIGURE 7. Clock Reset Timing in SDR Mode with OUTEDGE Low 17 20097419 20097420 20097423 www.national.com ...

Page 18

FIGURE 8. Clock Reset Timing in SDR Mode with OUTEDGE High FIGURE 9. Self Calibration and On-Command Calibration Timing www.national.com 18 20097424 20097425 ...

Page 19

Typical Performance Characteristics INL vs. CODE DNL vs. CODE POWER DISSIPATION vs. SAMPLE RATE V =V =1.9V, F =1000MHz CLK INL vs. TEMPERATURE 20097464 DNL vs. TEMPERATURE 20097466 ENOB vs. CLOCK DUTY CYCLE 20097481 19 =25°C unless ...

Page 20

ENOB vs. TEMPERATURE ENOB vs. SAMPLE RATE SNR vs. TEMPERATURE www.national.com ENOB vs. SUPPLY VOLTAGE 20097476 ENOB vs. INPUT FREQUENCY 20097478 SNR vs. SUPPLY VOLTAGE 20097468 20 20097477 20097479 20097469 ...

Page 21

SNR vs. SAMPLE RATE 20097470 THD vs. TEMPERATURE 20097472 THD vs. SAMPLE RATE 20097474 SNR vs. INPUT FREQUENCY THD vs. SUPPLY VOLTAGE THD vs. INPUT FREQUENCY 21 20097471 20097473 20097475 www.national.com ...

Page 22

SFDR vs. TEMPERATURE SFDR vs. SAMPLE RATE Spectral Response at FIN = 248 MHz www.national.com SFDR vs. SUPPLY VOLTAGE 20097485 SFDR vs. INPUT FREQUENCY 20097482 Spectral Response at FIN = 498 MHz 20097487 22 20097484 20097483 20097488 ...

Page 23

CROSSTALK vs. SOURCE FREQUENCY STEP RESPONSE FULL POWER BANDWIDTH 20097463 STEP RESPONSE DETAIL VIEW 20097461 23 20097486 20097462 www.national.com ...

Page 24

Functional Description The ADC08D1000 is a versatile A/D Converter with an inno- vative architecture permitting very high speed operation. The controls available ease the application of the device to circuit solutions. Optimum performance requires adherence to the provisions discussed ...

Page 25

Control Modes Much of the user control can be accomplished with several control pins that are provided. Examples include initiation of the calibration cycle, power down mode and full scale range setting. However, the ADC08D1000 also provides an Extend- ...

Page 26

OutEdge Setting To help ease data capture in the SDR mode, the output data may be caused to transition on either the positive or the neg- ative edge of the output data clock (DCLK). This is chosen with the ...

Page 27

Feature SDR or DDR Clocking DDR Clock Phase SDR Data transitions with rising or falling DCLK edge LVDS output level Power-On Calibration Delay Full-Scale Range Input Offset Adjust Dual Edge Sampling Selection Dual Edge Sampling Input Channel Selection DES Sampling ...

Page 28

These 12 bits form the header. The next 4 bits are the address of the register that written to and the last 16 bits are the data written ...

Page 29

Sign Bits 15:8 Offset Value. The input offset of the I-Channel ADC is adjusted linearly and monotonically by the value in this field. 00h provides a nominal zero offset, ...

Page 30

Bit 15 DES Enable. Setting this bit to 1b enables the Dual Edge Sampling mode. In this mode the ADCs in this device are used to sample and convert the same analog input in a time- interleaved manner, accomplishing a ...

Page 31

FIGURE 10. Extended Mode Offset Behavior 1.5 MULTIPLE ADC SYNCHRONIZATION The ADC08D1000 has the capability to precisely reset its sampling clock input to DCLK output relationship as deter- mined by the user-supplied DCLK_RST pulse. This allows multiple ADCs in a ...

Page 32

FIGURE 11. Differential Input Drive When the d.c. coupled mode is used, a common mode volt- age must be provided at the differential inputs. This common mode voltage should track the V CMO V output potential will change with temperature. ...

Page 33

The LMH6555 of Figure 12 is suitable for any Full Scale Range. 2.3 THE CLOCK INPUTS The ADC08D1000 has differential LVDS clock inputs, CLK+ and CLK-, which must be driven with an a.c. coupled, differ- ential clock signal. Although the ...

Page 34

On-Command Calibration On-command calibration may be run at any time in NORMAL (non-DES) mode only. Do not run a calibration while operat- ing the ADC in Auto DES Mode. If the ADC is operating in Auto DES mode and ...

Page 35

ADC08D1000 is used is noisy, it may be necessary to tie the OutV pin high. 2.4.5 Dual Edge Sampling IMPORTANT NOTE: When using the ADC in Extended Con- trol Mode, the ...

Page 36

AD- C08D1000 power pins. The Absolute Maximum Ratings should be strictly observed, even during power up and power down. A power supply that produces a voltage spike at ...

Page 37

ADC08D1000 die of θ typical power consumption = 2.8 x 1.6 = 4.5°C. Allowing for a 5.5°C (including an extra 1°C) temperature drop from the die to the temperature sensor, then, would mean that maintaining a ...

Page 38

It is not uncommon for high speed digital circuits to exhibit undershoot that goes more than a volt below ground. Controlling the impedance of high speed lines and terminating these lines in their characteristic impedance should control overshoot. ...

Page 39

Physical Dimensions inches (millimeters) unless otherwise noted NOTES: UNLESS OTHERWISE SPECIFIED REFERENCE JEDEC REGISTRATION MS-026, VARIATION BFB. 128-Lead Exposed Pad LQFP Order Number ADC08D1000CIYB NS Package Number VNX128A 39 www.national.com ...

Page 40

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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