Name: AD10242BZ
SKU: AD10242BZ
Price: 300.00000 USD
Availability: OutOfStock

REV. A

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

AD10242

FEATURES

Two Matched ADCs with Input Signal Conditioning

Selectable Bipolar Input Voltage Range

(60.5 V, 61.0 V, 62.0 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

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 minimize additional signal conditioning required for

multiple functions within a single system. The heart of the

AD10242 is the AD9042 which is designed specifically for appli-

cations requiring wide dynamic range.

The AD10242 is manufactured by Analog Devices on our

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 which allow the user to ac couple the ADC directly, by-

passing 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.

PRODUCT DESCRIPTION

The AD10242 is a complete dual signal chain solution including

onboard amplifiers, references, ADCs, and output buffering pro-

viding 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 AD9631, OP279, and the AD9042 in a

custom MCM to gain space, performance, and cost advantages

over solutions previously available.

FUNCTIONAL BLOCK DIAGRAM

OP279

AD9042

AD9631

TIMING

D11B (MSB)

D10B

D9B

D8B

D7B

D0B

(LSB)

D1B D2B D3B D4B D5B D6B

D9A

D10A

D11A

(MSB)

(LSB) D0A

D1A

D2A

D3A

D4A

D5A

D6A

D7A

D8A

ENC

AD10242

REF

OUTPUT BUFFERING

UNEG

UCOM

UPOS

OP279

AD9042

AD9631

TIMING

REF

OUTPUT BUFFERING

UPOSUNEG UCOM

ENC

626356 55 6457

33 36

Dual, 12-Bit, 40 MSPS MCM A/D Converter

with Analog Input Signal Conditioning

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700 World Wide Web Site: http://www.analog.com

Fax: 617/326-8703 © Analog Devices, Inc., 1997

REV. A

–2–

AD10242–SPECIFICATIONS

Electrical Characteristics

(AV

= +5 V; AV

= –5.0 V; DV

= +5 V; applies to each ADC unless otherwise noted)

Test Mil AD10242BZ/TZ

Parameter Temp Level Subgroup Min Typ Max Units

RESOLUTION 12 Bits

DC ACCURACY

No Missing Codes Full VI 1, 2, 3 Guaranteed

Offset Error +25°C I 1 –0.5 ±0.05 +0.5 % FS

Full VI 2, 3 –2.0 ±1.0 +2.0 % FS

Offset Error Channel Match Full V ±0.1 %

Gain Error

+25°C I 1 –1.0 ±0.5 +1.0 % FS

Full VI 2, 3 –1.5 ±0.8 +1.5 % FS

Gain Error Channel Match Full V ±0.1 %

ANALOG INPUT (A

)

Input Voltage Range

1 Full I ±0.5 V

2 Full I ±1.0 V

3 Full I ±2V

Input Resistance

1 Full IV 12 99 100 101 Ω

2 Full IV 12 198 200 202 Ω

3 Full IV 12 396 400 404 Ω

Input Capacitance

+25°C IV 12 0 4.0 7.0 pF

Analog Input Bandwidth

Full V 60 MHz

ENCODE INPUT

4, 5

Logic Compatibility TTL/CMOS

Logic “1” Voltage Full I 1, 2, 3 2.0 5.0 V

Logic “0” Voltage Full I 1, 2, 3 0 0.8 V

Logic “1” Current (V

INH

= 5 V) Full I 1, 2, 3 625 800 µA

Logic “0” Current (V

INL

= 0 V) Full I 1, 2, 3 –400 –300 µA

Input Capacitance +25°C V 12 7.0 pF

SWITCHING PERFORMANCE

Maximum Conversion Rate

Full VI 4, 5, 6 40 50 MSPS

Minimum Conversion Rate

Full V 12 5 MSPS

Aperture Delay (t

) +25°C V 1.0 ns

Aperture Delay Matching +25°CV ±2.0 ns

Aperture Uncertainty (Jitter) +25°C V 1 ps rms

ENCODE Pulse Width High +25°CIV 12 12 10 ns

ENCODE Pulse Width Low +25°CIV 12 10 41 ns

Output Delay (t

) Full IV 12 10 12 14 ns

SNR

Analog Input @ 1.2 MHz +25°CV 68 dB

@ 4.85 MHz +25°CI 4 63 66 dB

Full II 5, 6 62 66 dB

@ 9.9 MHz +25°CI 4 63 65 dB

Full II 5, 6 62 65 dB

@ 19.5 MHz +25°CI 4 60 63 dB

Full II 5, 6 59 62 dB

SINAD

Analog Input @ 1.2 MHz +25°CV 67 dB

@ 4.85 MHz +25°CI 4 62 65 dB

Full II 5, 6 61 64 dB

@ 9.9 MHz +25°CI 4 60 64 dB

Full II 5, 6 60 63 dB

@ 19.5 MHz +25°CI 4 58 61 dB

Full II 5, 6 58 60 dB

Test Mil AD10242BZ/TZ

Parameter Temp Level Subgroup Min Typ Max Units

SPURIOUS-FREE DYNAMIC RANGE

Analog Input @ 1.2 MHz +25°C I 81 dBFS

@ 4.85 MHz +25°C I 4 70 80 dBFS

Full II 5, 6 70 79 dBFS

@ 9.9 MHz +25°C I 4 63 70 dBFS

Full II 5, 6 63 69 dBFS

@ 19.5 MHz +25°C I 4 60 67 dBFS

Full II 5, 6 60 66 dBFS

TWO-TONE IMD REJECTION

F1, F2 @ –7 dBFS Full II 4, 5, 6 70 76 dBc

CHANNEL-TO-CHANNEL ISOLATION

+25°CIV 12 75 80 dB

TRANSIENT RESPONSE +25°CV 10 ns

LINEARITY

Differential Nonlinearity +25°C IV 12 0.3 1.0 LSB

(Encode = 20 MHz) Full IV 12 0.5 1.25 LSB

Integral Nonlinearity +25°C V 0.3

LSB

(

Encode

= 20 MHz) Full V 0.5 LSB

OVERVOLTAGE RECOVERY TIME

= 2.0 × FS Full IV 12 50 100 ns

= 4.0 × FS

Full IV 12 75 200 ns

DIGITAL OUTPUTS

Logic Compatibility CMOS

Logic “1” Voltage

Full I 1, 2, 3 3.5 4.2 V

Logic “0” Voltage

Full I 1, 2, 3 0.45 0.65 V

Output Coding Twos Complement

POWER SUPPLY

Supply Voltage Full VI +5.0 V

I (AV

) Current Full V 260 mA

Supply Voltage Full VI –5.0 V

I (AV

) Current Full V 55 mA

Supply Voltage Full VI +5.0 V

I (DV

) Current Full V 25 mA

(Total) Supply Current Full I 1, 2, 3 350 400 mA

Power Dissipation (Total) Full I 1, 2, 3 1.75 2.0 W

Power Supply Rejection Ratio (PSRR) Full I 7, 8 0.01 0.02 % FSR/% V

Pass Band Ripple to 10 MHz Full IV 12 0.2 dB

NOTES

Gain tests are performed on A

3 over specified input voltage range.

Input capacitance specifications combines AD9631 die capacitance + ceramic package capacitance.

Full power bandwidth is the frequency at which the spectral power of the fundamental frequency (as determined by FFT analysis) is reduced by 3 dB.

ENCODE (Pin 4) driven by single-ended source; ENCODE (Pin 5) bypassed to ground through 0.01 µF capacitor.

ENCODE (Pin 4) may also be driven differentially in conjunction with ENCODE (Pin 5); see “Encoding the AD10242” for details.

Minimum and maximum conversion rates allow for variation in

Encode

Duty Cycle of 50% ± 5%.

Analog Input signal power at –1 dBFS; signal-to-noise ratio (SNR) is the ratio of signal level to total noise (first 5 harmonics removed).

Encode

= 40.0 MSPS.

Analog Input signal power at –1 dBFS; signal-to-noise and distortion (SINAD) is the ratio of signal level to total noise + harmonics.

Encode

= 40.0 MSPS.

Analog Input signal equal –1 dBFS; SFDR is ratio of converter full scale to worst spur.

Both input tones at –7 dBFS; two tone intermodulation distortion (IMD) rejection is the ratio of either tone to the worst 3rd order intermod product. f1 = 10.0 MHz

± 100 kHz, 50 kHz ≤ f1 – f2 ≤ 300 kHz.

Channel-to-channel isolation tested with A channel grounded and a full-scale signal applied to B channel (AIN1).

Input driven to 2× and 4× A

1 range for >4 clock cycles. Output recovers inband in specified time with

Encode

= 40 MSPS. No foldover guaranteed.

Outputs are sourcing 10 µA.

Outputs are sinking 10 µA.

All specifications guaranteed within 100 ms of initial power up regardless of sequencing.

Specifications subject to change without notice.

AD10242

–3–

REV. A

Part #	AD10242BZ
Description
Category	HYBRID
Availability	Out of Stock
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AD10242BZ

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