KAD2708C-21Q68 Intersil, KAD2708C-21Q68 Datasheet

IC ADC 8BIT 210MSPS SGL 68-QFN

KAD2708C-21Q68

Manufacturer Part Number
KAD2708C-21Q68
Description
IC ADC 8BIT 210MSPS SGL 68-QFN
Manufacturer
Intersil
Series
FemtoCharge™r
Datasheet

Specifications of KAD2708C-21Q68

Number Of Bits
8
Sampling Rate (per Second)
210M
Data Interface
Parallel
Number Of Converters
1
Power Dissipation (max)
248mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
68-VQFN Exposed Pad, 68-HVQFN, 68-SQFN, 68-DHVQFN
For Use With
KDC2708CEVAL - DAUGHTER CARD FOR KAD2708
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Ordering Information
NOTES:
KAD2708C-27Q68
KAD2708C-21Q68
KAD2708C-17Q68
KAD2708C-10Q68
VREFSEL
1. These Intersil Pb-free plastic packaged products employ special Pb-
2. For Moisture Sensitivity Level (MSL), please see device information
PART NUMBER
CLK_P
CLK_N
8-Bit, 275/210/170/105MSPS A/D Converter
The KAD2708C is the industry’s lowest power, 8-bit,
275MSPS, high performance Analog-to-Digital converter. It
is designed with Intersil’s proprietary FemtoCharge™
technology on a standard CMOS process. The KAD2708C
offers high dynamic performance (49.2dBFS SNR @
f
include an over-range indicator and a selectable divide-by-2
input clock divider. The KAD2708C is one member of a
pin-compatible family offering 8 and 10-bit ADCs with
sample rates from 105MSPS to 350MSPS and LVCMOS or
LVDS-compatible outputs (Table 1). This family of products
is available in 68-pin RoHS-compliant QFN packages with
exposed paddle. Performance is specified over the full
industrial temperature range (-40°C to +85°C).
VREF
IN
VCM
free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is RoHS
compliant and compatible with both SnPb and Pb-free soldering
operations). Intersil Pb-free products are MSL classified at Pb-free
peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
page for KAD2708C-10, KAD2708C-17,
KAD2708C-27. For more information on MSL please see techbrief
TB363.
INN
INP
= 138MHz) while consuming less than 265mW. Features
S/H
(MSPS)
SPEED
275
210
170
105
275MSPS
Generation
Clock
8-bit
ADC
RANGE (°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
+
TEMP.
1.21 V
1
8
Data Sheet
KAD2708C-21
LVCMOS
Drivers
PACKAGE PKG. DWG. #
68 Ld QFN L68.10x10B
68 Ld QFN L68.10x10B
68 Ld QFN L68.10x10B
68 Ld QFN L68.10x10B
1-888-INTERSIL or 1-888-468-3774
and
2SC
CLKOUT
D7 – D0
OR
FemtoCharge is a trademark of Kenet Inc. Copyright Intersil Americas Inc. 2008, 2011. All Rights Reserved
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• On-Chip Reference
• Internal Track and Hold
• 1.5V
• 600MHz Analog Input Bandwidth
• Two’s Complement or Binary Output
• Over-Range Indicator
• Selectable ÷2 Clock Input
• LVCMOS Outputs
Applications
• High-Performance Data Acquisition
• Portable Oscilloscope
• Medical Imaging
• Cable Head Ends
• Power-Amplifier Linearization
• Radar and Satellite Antenna Array Processing
• Broadband Communications
• Point-to-Point Microwave Systems
• Communications Test Equipment
Key Specifications
• SNR of 49.2dBFS at f
• SFDR of 66.6dBc at f
• Power Consumption ≤ 265mW at f
Pin-Compatible Family
RESOLUTION, SPEED LVDS OUTPUTS LVCMOS OUTPUTS
10 Bits 275MSPS
10 Bits 210MSPS
10 Bits 170MSPS
10 Bits 105MSPS
8 Bits 350MSPS
8 Bits 275MSPS
8 Bits 210MSPS
8 Bits 170MSPS
8 Bits 105MSPS
P-P
All other trademarks mentioned are the property of their respective owners.
April 14, 2011
Differential Input Voltage
TABLE 1. PIN-COMPATIBLE PRODUCTS
S
S
KAD2708L-35
KAD2710L-27
KAD2708L-27
KAD2710L-21
KAD2708L-21
KAD2710L-17
KAD2708L-17
KAD2710L-10
KAD2708L-10
= 275MSPS, f
= 275MSPS, f
S
KAD2708C
= 275MSPS
IN
IN
= 138MHz
= 138MHz
KAD2710C-27
KAD2708C-27
KAD2710C-21
KAD2708C-21
KAD2710C-17
KAD2708C-17
KAD2710C-10
KAD2708C-10
FN6812.1

Related parts for KAD2708C-21Q68

KAD2708C-21Q68 Summary of contents

Page 1

... VCM Ordering Information SPEED TEMP. PART NUMBER (MSPS) RANGE (°C) KAD2708C-27Q68 275 -40 to +85 KAD2708C-21Q68 210 -40 to +85 KAD2708C-17Q68 170 -40 to +85 KAD2708C-10Q68 105 -40 to +85 NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb- free material sets, molding compounds/die attach materials, and 100% ...

Page 2

... Typical Performance Curves ....................................... 9 Functional Description ................................................ 12 Reset ......................................................................... . 12 Voltage Reference ..................................................... . 12 Analog Input .............................................................. . 12 Clock Input ................................................................. . 13 Jitter ........................................................................... . 13 Digital Outputs ........................................................... . 14 Equivalent Circuits ....................................................... 14 Layout Considerations ................................................ 15 Split Ground and Power Planes ................................ . 15 Clock Input Considerations ........................................ . 15 Bypass and Filtering .................................................. . 15 LVCMOS Outputs ...................................................... . 15 Unused Inputs ........................................................... . 15 Definitions ..................................................................... 15 Package Outline Drawing ............................................ 16 2 KAD2708C FN6812.1 April 14, 2011 ...

Page 3

... 275MSPS, 210MSPS, 170MSPS and SAMPLE KAD2708C-17 KAD2708C-10 MAX MIN MAX MIN (Note 5) (Note 5) (Note 5) (Note 5) TYP 1.6 1.4 1.5 1.6 1.4 198 860 1.9 1.7 1.8 1.9 1.7 3.45 3.15 3.3 3 ...

Page 4

... MIN MAX (Note 6) TYP (Note 6) 0.8*AVDD3 0.2*AVDD3 0.8*AVDD3 0.2*AVDD3 0.8*OVDD2 0.2*OVDD2 KAD2708C-10 MAX (Note 5) TYP UNITS 50 MSPS ±0.2 0.4 LSB ±0.2 0.8 LSB 49.5 dBFS 49.2 dBFS 49.1 dBFS 49.5 dBFS 49.2 dBFS 48.9 dBFS 7.9 Bits 7.9 Bits 7 ...

Page 5

... CLKP, CLKN Differential Input Resistance CLKP, CLKN Common-Mode Input Voltage LVCMOS OUTPUTS Voltage Output High Voltage Output Low Output Rise Time Output Fall Time NOTE: 6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. 5 KAD2708C CONDITIONS (Note 6) VIN = OVSS CDI R CDI V ...

Page 6

... Industry-standard protection techniques have been utilized in the design of this product. However, reasonable care must be taken in the storage and handling of ESD sensitive products. Contact Intersil for the specific ESD sensitivity rating of this product. 6 KAD2708C Sample PID ...

Page 7

... Exposed Paddle 7 KAD2708C NAME AVDD2 1.8V Analog Supply AVSS Analog Supply Return VREF Reference Voltage Out/In VREFSEL Reference Voltage Select (0:Int 1:Ext) VCM Common-Mode Voltage Output AVDD3 3.3V Analog Supply INP, INN Analog Input Positive, Negative DNC ...

Page 8

... Pin Configuration AVDD2 1 AVSS 2 VREF 3 VREFSEL 4 VCM 5 AVDD3 6 AVSS 7 INP 8 INN 9 AVSS 10 DNC 11 DNC 12 DNC 13 AVDD2 14 AVDD3 15 AVDD3 16 CLKDIV 17 8 KAD2708C KAD2708C 68 QFN Top View Not to Scale FIGURE 2. PIN CONFIGURATION 51 D4 DNC DNC DNC 45 OVSS 44 OVDD2 43 CLKOUT 42 DNC 41 OVDD2 DNC DNC 36 DNC ...

Page 9

... FIGURE 3. SNR AND SFDR SNR SFDR FIGURE 5. SNR AND SFDR SFDR SNR 100 150 200 (MSPS FIGURE 7. SNR AND SFDR KAD2708C AVDD2 = OVDD2 = 1.8V, AVDD3 = 3.3V -0.5dBFS unless noted. IN -50 -55 -60 -65 HD3 -70 -75 -80 HD2 -85 - -20 HD3 -30 -40 -50 HD2 -60 -70 -80 - -65 -70 -75 HD3 -80 -85 HD2 -90 ...

Page 10

... CODE FIGURE 11. INTEGRAL NONLINEARITY vs OUTPUT CODE 0 -20 -40 -60 -80 -100 -120 FREQUENCY (MHz) FIGURE 13. OUTPUT SPECTRUM @ 9.865MHz 10 KAD2708C AVDD2 = OVDD2 = 1.8V, AVDD3 = 3.3V -0.5dBFS unless noted. (Continued .75 0 .25 -0.5 -0 .75 -1 200 250 300 0 FIGURE 10. DIFFERENTIAL NONLINEARITY vs OUTPUT CODE SAMPLE 50,000 45,000 ...

Page 11

... FIGURE 17. TWO-TONE SPECTRUM @ 140MHz, 141MHz 75 70 SFDR SNR 40 -40 - AMBIENT TEMPERATURE, C FIGURE 19. SNR AND SFDR vs TEMPERATURE 11 KAD2708C AVDD2 = OVDD2 = 1.8V, AVDD3 = 3.3V -0.5dBFS unless noted. (Continued Ain = -0.48dBFS SNR = 49.3dBFS -20 SFDR = 63dBc SINAD = 49.1dBFS -40 HD2 = -63dBc HD3 = -67dBc -60 -80 -100 -120 ...

Page 12

... An external voltage may be applied to this pin to provide a more accurate reference than the internally generated bandgap voltage or to match the full-scale reference among a system of KAD2708C chips. One option in the latter configuration is to use one KAD2708C's internally generated reference as the external reference voltage for the other chips in the system ...

Page 13

... VCM Ω 25O 0.1µF Use of the clock divider is optional. The KAD2708C's ADC requires a clock with 50% duty cycle for optimum performance. If such a clock is not available, one option is to generate twice the desired sampling rate, then use the KAD2708C's divide-by-2 to generate a 50%-duty-cycle clock ...

Page 14

... F 2 Φ FIGURE 28. ANALOG INPUTS 14 KAD2708C Any internal aperture jitter combines with the input clock jitter root-sum-square fashion since they are not statistically correlated, and this determines the total jitter in 14 Bits the system. The total jitter, combined with other noise sources, then determines the achievable SNR ...

Page 15

... No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 15 KAD2708C Clock Duty Cycle is the ratio of the time the clock wave is at logic high to the total time of one clock period. ...

Page 16

... Package Outline Drawing L68.10x10B 68 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 11/08 PIN 1 10.00 INDEX AREA 6 10.00 TOP VIEW 8.00 Sq 9.65 Sq 7.70 Sq TYPICAL RECOMMENDED LAND PATTERN 16 KAD2708C Exp. DAP 7.70 Sq. 35 (4X) 0.15 34 68X 0.55 BOTTOM VIEW 0.90 Max 64X 0.50 68X 0. ...

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