AD9022SQ ,12-Bit 20 MSPS Monolithic A/D ConverterCHARACTERISTICSTest AD9022AQ/AZ AD9022BQ/BZ AD9022SQ/SZParameter (Conditions) Temp Level Min Typ ..
AD9040AJN ,10-Bit 40 MSPS A/D ConverterCHARACTERISTICS otherwise noted)Test AD9040AJN/JRParameter (Conditions) Temp Level Min Typ Max Unit ..
AD9040AJR ,10-Bit 40 MSPS A/D ConverterGENERAL DESCRIPTIONPRODUCT HIGHLIGHTSThe AD9040A is a complete 10-bit monolithic sampling analog-1. ..
AD9042AD ,12-Bit, 41 MSPS Monolithic A/D ConverterAPPLICATIONSTIMINGENCODE MSB LSBCellular/PCS Base StationsGPS Anti-Jamming ReceiversGNDD11 D10 D9 D ..
AD9042AST ,12-Bit, 41 MSPS Monolithic A/D ConverterSPECIFICATIONS AD9042V tied to V through 50 Ω; T = –408C, T = +858C)REF OFFSET MIN MAXTest AD9042AS ..
AD9048JJ ,Monolithic 8-Bit Video A/D Converterspecifications.Devices operating over two ambient temperature ranges andwith two grades of linearit ..
ADS5440IPFP ,13-BIT 210 MSPS ANALOG-TO-DIGITAL CONVERTERFEATURES APPLICATIONS• Test and Measurement• 13-Bit Resolution• Software-Defined Radio• 210 MSPS Sa ..
ADS5444IPFP ,13-BIT 250 MSPS ANALOG-TO-DIGITAL CONVERTERFEATURES APPLICATIONS• Test and Measurement• 13-Bit Resolution• Software-Defined Radio• 250 MSPS Sa ..
ADS5463IPFP ,12-bit, 500 MSPS Analog-to-Digital Converter with Buffered Input 80-HTQFP FEATURES • Industrial Temperature Range: –40°C to 85°C23• 12-Bit Resolution • Pin-Similar/Compatibl ..
ADS5463IPFPG4 ,12-bit, 500 MSPS Analog-to-Digital Converter with Buffered Input 80-HTQFP MAXIMUM RATINGS(1)over operating free-air temperature range (unless otherwise noted)ADS5463/ADS54RF ..
ADS5474IPFPG4 ,14-bit, 400 MSPS Analog-to-Digital Converter with Buffered Input 80-HTQFP -40 to 85Features 3 DescriptionThe ADS5474 device is a 14-bit, 400-MSPS analog-1• 400-MSPS Sample Rateto-dig ..
ADS5481IRGCT ,16-bit 80MSPS ADC With Buffered Analog Input 64-VQFN -40 to 85FEATURES APPLICATIONS• Wireless Infrastructure (Multi-Carrier GSM,23• 80/105/135-MSPS Sample RatesW ..
AD9022AQ-AD9022SQ
12-Bit 20 MSPS Monolithic A/D Converter
12-Bit 20 MSPS
Monolithic A/D Converter
PRODUCT DESCRIPTIONThe AD9022 is a high speed, high performance, monolithic
12-bit analog-to-digital converter. All necessary functions, in-
cluding track-and-hold (T/H) and reference, are included
on-chip to provide a complete conversion solution. It is a
companion unit to the AD9023; the primary difference between
the two is that all logic for the AD9022 is TTL-compatible,
while the AD9023 utilizes ECL logic for digital inputs and out-
puts. Pinouts for the two parts are nearly identical.
Operating from +5 V and –5.2 Vsupplies,the AD9022 pro-
vides excellent dynamic performance. Sampling at 20 MSPS
with AIN = 1 MHz, the spurious-free dynamic range (SFDR) is
typically 76 dB; with AIN = 9.6 MHz, SFDR is 74 dB. SNR is
typically 65 dB.
The onboard T/H has a 110 MHz bandwidth and, more impor-
tantly, is designed to provide excellent dynamic performance for
analog input frequencies above Nyquist. This feature is neces-
sary in many undersampling signal processing applications, such
as in direct IF-to-digital conversion.
To maintain dynamic performance at higher IFs, monolithic
RF track-and-holds (such as the AD9100 and AD9101
Samplifier™) can be used with the AD9022 to process signals
up to and beyond 70 MHz.
With DNL typically less than 0.5 LSB and 20 ns transient re-
sponse settling time, the AD9022 provides excellent results
when low-frequency analog inputs must be oversampled (such
as CCD digitization). The full scale analog input is ±1 V with a
300 Ω input impedance. The analog input can be driven directly
from the signal source, or can be buffered by the AD96xx series
of low noise, low distortion buffer amplifiers.
All timing is internal to the AD9022; the clock signal initiates
the conversion cycle. For best results, the encode command
should contain as little jitter as possible. High speed layout
practices must be followed to ensure optimum A/D perfor-
mance.
The AD9022 is built on a trench isolated bipolar process and
utilizes an innovative multipass architecture (see the block
diagram). The unit is packaged in 28-lead ceramic DIPs and
gullwing surface mount packages. The AD9022 is specified to
operate over the industrial (–25°C to +85°C) and military
(–55°C to +125°C) temperature ranges.
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Monolithic
12-Bit 20 MSPS A/D Converter
Low Power Dissipation: 1.4 Watts
On-Chip T/H and Reference
High Spurious-Free Dynamic Range
TTL Logic
APPLICATIONS
Radar Receivers
Digital Communications
Digital Instrumentation
Electro-OpticsSamplifier is a trademark of Analog Devices, Inc.
AD9022–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSANALOG INPUT
SWITCHING PERFORMANCE
ENCODE INPUT
DYNAMIC PERFORMANCE
(+VS = +5 V; –VS = –5.2 V; Encode = 20 MSPS, unless otherwise noted)
ORDERING GUIDEAD9022 Timing Diagram
ABSOLUTE MAXIMUM RATINGS1+VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+6 V
–VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–6 V
Analog Input . . . . . . . . . . . . . . . . . . . . . . . . .–1.5 V to +1.5 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+VS to 0 V
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . .20 mA
Operating Temperature Range
AD9022AQ/AZ/BQ/BZ . . . . . . . . . . . . . . .–25°C to +85°C
AD9022SQ/SZ . . . . . . . . . . . . . . . . . . . . .–55°C to +125°C
Maximum Junction Temperature2 . . . . . . . . . . . . . . . .+175°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . .+300°C
Storage Temperature Range . . . . . . . . . . . .–65°C to +150°C
NOTESAbsolute maximum ratings are limiting values to be applied individually, and
beyond which the serviceability of the circuit may be impaired. Functional
operability is not necessarily implied. Exposure to absolute maximum rating
conditions for an extended period of time may affect device reliability.Typical thermal impedances: “Q” Package (Ceramic DIP): θJC = 10°C/W; θJA =
AD9022DIGITAL OUTPUTS
NOTESAD9022 load is a single LS latch.RMS signal-to-rms noise with analog input signal 1 dB below full scale at specified frequency. Tested at 55% duty cycle.Intermodulation measured with analog input frequencies of 8.9 MHz and 9.8 MHz at 7 dB below full scale.PSRR is sensitivity of offset error to power supply variations within the 5% limits shown.
Specifications subject to change without notice.
AD9022
EXPLANATION OF TEST LEVELS
Test Level–100% production tested.–100% production tested at +25°C, and sample tested at
specified temperatures. AC testing done on sample basis.
III–Sample tested only.–Parameter is guaranteed by design and characterization
testing.–Parameter is a typical value only.–All devices are 100% production tested at +25°C. 100%
production tested at temperature extremes for extended
temperature devices; guaranteed by design and character-
ization testing for industrial devices.
DIE LAYOUT AND MECHANICAL INFORMATIONDie Dimensions . . . . . . . . . . . . . . . .205 × 228 × 21 (±1) mils
Pad Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 × 4 mils
Metalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Aluminum
Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .None
Substrate Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–VS
Transistor Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,080
Passivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Oxynitride
Bond Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Aluminum
PIN FUNCTION DESCRIPTIONS
PIN DESIGNATIONS
NC = NO CONNECT
COMPENSATION (PIN 17) SHOULD BE
CONNECTED TO –VS THROUGH 0.01mF
+VS
–VS
AIN
GND
+VS
GND
ENCODE
D0 (LSB)
GND
+VS
–VS
GND
COMP
D11(MSB)
D10
GND
–VS
+VS
DEFINITIONS OF SPECIFICATIONS
Analog BandwidthThe analog input frequency at which the spectral power of the
fundamental frequency (as determined by FFT analysis) is
reduced by 3 dB.
Aperture DelayThe delay between the rising edge of the ENCODE command
and the instant at which the analog input is sampled.
Aperture Uncertainty (Jitter)The sample-to-sample variation in aperture delay.
Differential NonlinearityThe deviation of any code from an ideal 1 LSB step.
Harmonic DistortionThe rms value of the fundamental divided by the rms value of
the worst harmonic component.
Integral NonlinearityThe deviation of the transfer function from a reference line
measured in fractions of 1 LSB using a “best straight line” de-
termined by a least square curve fit.
Minimum Conversion RateThe encode rate at which the SNR of the lowest analog signal
frequency tested drops by no more than 3 dB below the guaran-
teed limit.
Maximum Conversion RateThe encode rate at which parametric testing is performed.
Output Propagation DelayThe delay between the 50% point of the rising edge of the EN-
CODE command and the time when all output data bits are
within valid logic levels.
Overvoltage Recovery TimeThe amount of time required for the converter to recover to
12-bit accuracy after an analog input signal 150% of full scale is
reduced to the full-scale range of the converter.
Power Supply Rejection Ratio (PSRR)The ratio of a change in input offset voltage to a change in
power supply voltage.
Signal-to-Noise Ratio (SNR)The ratio of the rms signal amplitude to the rms value of
“noise,” which is defined as the sum of all other spectral compo-
nents, including harmonics but excluding dc, with an analog
input signal 1 dB below full scale.
Signal-to-Noise Ratio (Without Harmonics)The ratio of the rms signal amplitude to the rms value of
“noise,” which is defined as the sum of all other spectral compo-
nents, excluding the first five harmonics and dc, with an analog
input signal 1 dB below full scale.
Transient ResponseThe time required for the converter to achieve 12-bit accuracy
when a step function is applied to the analog input.
Two-Tone Intermodulation Distortion (IMD) RejectionThe ratio of the power of either of two input signals to the
power of the strongest third-order IMD signal.
Figure 1.Equivalent Circuits
AD9022
–Typical Performance Characteristics
ANALOG INPUT FREQUENCY – MHz
WORST CASE HARMONIC DISTORTION – dBc
–71Figure 2. Harmonic Distortion vs. Analog Input
Frequency
ENCODE RATE – MSPS
HARMONICS AND SNR – dB
7.510.012.517.515.020.022.525.0Figure 3.SNR and Harmonics vs. Encode Rate
Figure 4.Differential Nonlinearity vs. Output Code
ANALOG INPUT FREQUENCY – MHz
SNR – dBFigure 5.Signal-to-Noise Ratio vs. Analog Input
Frequency
SFDR AND SNR – dB
INPUT LEVEL – dBFigure 6.SFDR and SNR vs. Analog Input Level
–1
SFDR AND SNR – dB
INPUT LEVEL – dBFigure 7.SFDR and SNR vs. Analog Input Level