IC,A/D CONVERTER,DUAL,12-BIT,HYBRID,QFP,68PIN

AD10242TZ

Manufacturer Part NumberAD10242TZ
DescriptionIC,A/D CONVERTER,DUAL,12-BIT,HYBRID,QFP,68PIN
ManufacturerAnalog Devices Inc
AD10242TZ datasheet
 


Specifications of AD10242TZ

Rohs StatusRoHS non-compliantNumber Of Bits12
Sampling Rate (per Second)40MData InterfaceParallel
Number Of Converters2Power Dissipation (max)2W
Voltage Supply SourceAnalog and Digital, Dual ±Operating Temperature-55°C ~ 125°C
Mounting TypeSurface MountPackage / Case68-CLCC
For Use WithAD10242/PCB - KIT EVAL PCB FOR AD10242  
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FEATURES
2 Matched ADCs with Input Signal Conditioning
Selectable Bipolar Input Voltage Range
( 0.5 V,
1.0 V,
2.0 V)
Full MIL-STD-883B Compliant
80 dB Spurious-Free Dynamic Range
Trimmed Channel-Channel Matching
APPLICATIONS
Radar Processing
Communications Receivers
FLIR Processing
Secure Communications
Any I/Q Signal Processing Application
GENERAL DESCRIPTION
The AD10242 is a complete dual signal chain solution including
on-board amplifiers, references, ADCs, and output buffering
providing unsurpassed total system performance. Each channel is
laser trimmed for gain and offset matching and provides channel-
to-channel crosstalk performance better than 80 dB. The AD10242
utilizes two each of the AD9632, OP279, and AD9042 in a cus-
tom MCM to gain space, performance, and cost advantages over
solutions previously available.
A
A
3
IN
IN
UPOS
OP279
UCOM
UNEG
OP279
(LSB) D0A
D1A
D2A
D3A
9
D4A
OUTPUT BUFFERING
D5A
D6A
D7A
TIMING
D8A
ENC
D9A
ENC
REV. C
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. 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 companies.
Dual, 12-Bit, 40 MSPS MCM A/D Converter
with Analog Input Signal Conditioning
The AD10242 operates with ± 5.0 V for the analog signal condi-
tioning with a separate 5.0 V supply for the analog-to-digital
conversion. Each channel is completely independent, allowing
operation with independent encode or analog inputs. The AD10242
also offers the user a choice of analog input signal ranges to mini-
mize additional signal conditioning required for multiple functions
within a single system. The heart of the AD10242 is the AD9042,
which is designed specifically for applications requiring wide
dynamic range.
The AD10242 is manufactured on Analog Devices’
MIL-PRF-38534 MCM line and is completely qualified. Units
are packaged in a custom, cofired, ceramic 68-lead gull wing
package and specified for operation from –55°C to +125°C.
Contact the factory for additional custom options including those
that allow the user to ac couple the ADC directly, bypassing the
front end amplifier section. Also see the AD9042 data sheet for
additional details on ADC performance.
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate of 40 MSPS.
2. Dynamic performance specified over entire Nyquist band;
spurious signals @ 80 dBc for –1 dBFS input signals.
3. Low power dissipation: <2 W off ± 5.0 V supplies.
4. User defined input amplitude.
5. Packaged in 68-lead ceramic leaded chip carrier.
FUNCTIONAL BLOCK DIAGRAM
2
A
1
IN
UNEG UCOM
UPOS
AD9632
AD9042
V
REF
AD10242
12
D10A D11A
D0B
(MSB)
(LSB)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
AD10242
A
2
A
1
A
3
IN
IN
IN
OP279
AD9632
OP279
AD9042
TIMING
V
REF
12
5
OUTPUT BUFFERING
7
D1B
D2B
D3B
D4B
D5B
D6B
© 2003 Analog Devices, Inc. All rights reserved.
ENC
ENC
D11B (MSB)
D10B
D9B
D8B
D7B
www.analog.com

AD10242TZ Summary of contents

  • Page 1

    FEATURES 2 Matched ADCs with Input Signal Conditioning Selectable Bipolar Input Voltage Range ( 0.5 V, 1.0 V, 2.0 V) Full MIL-STD-883B Compliant 80 dB Spurious-Free Dynamic Range Trimmed Channel-Channel Matching APPLICATIONS Radar Processing Communications Receivers FLIR Processing Secure ...

  • Page 2

    AD10242–SPECIFICATIONS Electrical Characteristics Parameter RESOLUTION DC ACCURACY No Missing Codes Offset Error Offset Error Channel Match 1 Gain Error Gain Error Channel Match ANALOG INPUT ( Input Voltage Range ...

  • Page 3

    Parameter SPURIOUS-FREE DYNAMIC RANGE Analog Input @ 1.2 MHz @ 4.85 MHz @ 9.9 MHz @ 19.5 MHz 10 TWO-TONE IMD REJECTION F1 –7 dBFS CHANNEL-TO-CHANNEL ISOLATION TRANSIENT RESPONSE LINEARITY Differential Nonlinearity (Encode = 20 MHz) Integral Nonlinearity ...

  • Page 4

    ... JC odel Temperature Range M AD10242BZ –40°C to +85°C (Case) AD10242TZ –55°C to +125°C (Case) AD10242TZ/883B –55°C to +125°C (Case) 5962-9581501HXA –55°C to +125°C (Case) AD10242/PCB 25°C CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD10242 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

  • Page 5

    GNDA GNDA UPOSA AV (LSB) D0A GNDA CONNECT Pin No. Mnemonic 1 SHIELD 2, 5, 9–11, 26–27 GNDA 3 UNEGA 4 UCOMA UPOSA 13 ...

  • Page 6

    AD10242 DEFINITION OF SPECIFICATIONS Analog Bandwidth The analog input frequency at which the spectral power of the fundamental frequency (as determined by the FFT analysis) is reduced by 3 dB. Aperture Delay The delay between the 50% point of the ...

  • Page 7

    1.0ns TYP A ENCODE t = 12ns TYP OD DIGITAL N – – OUTPUTS Figure 1. Timing Diagram EQUIVALENT CIRCUITS A 3 ...

  • Page 8

    AD10242–Typical Performance Characteristics 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 FREQUENCY – MHz TPC 1. Single Tone @ 4.85 MHz 0 –10 –20 –30 –40 –50 –60 –70 –80 ...

  • Page 9

    T = +25 C 65.0 64 +125 C 64.0 63.5 ENCODE = 40MSPS 63 62.5 62.0 61 ANALOG INPUT FREQUENCY – MHz TPC 7. SNR vs SFDR ...

  • Page 10

    AD10242 SFDR (dBFS ENCODE = 40MSPS 29.2 ANALOG INPUT FREQUENCY – MHz TPC 13. SNR/Harmonics THEORY OF OPERATION Refer to the functional block diagram. ...

  • Page 11

    If a logic threshold other than the nominal 1 required, the following equations show how to use an external resistor, Rx, to raise or lower the trip point (see Figure kΩ ...

  • Page 12

    AD10242 USING THE FLEXIBLE INPUT The AD10242 has been designed with the user’s ease of opera- tion in mind. Multiple input configurations have been included on board to allow the user a choice of input signal levels and input impedance. ...

  • Page 13

    SMA SMA 0 H2DM 8 J15 U1 OUT 1 K1115 AD9696KN 5VA H2DM R9 E5 J17 470 R10 C14 5 470 0.1 ...

  • Page 14

    AD10242 Care should be taken when placing the digital output runs. Because the digital outputs have such a high slew rate, the capacitive loading on the digital outputs should be minimized. Circuit traces for the digital outputs should be kept ...

  • Page 15

    DETAIL A TOE DOWN ANGLE 0–8 DEGREES 0.060 (1.52) 0.050 (1.27) 0.040 (1.02) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR ...

  • Page 16

    –16– ...