AD9057BRS-60 Fast Delivery |IC PHOENIX CO.,LIMITED

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AD9057BRS-60
8-Bit 40 MSPS/60 MSPS/80 MSPS A/D Converter
REV.B8-Bit
40 MSPS/60 MSPS/80 MSPS A/D Converter
FUNCTIONAL BLOCK DIAGRAMD7–D0
ENCODE
AIN
VREF OUT
BIAS OUTPWRDNVDD
VREF IN
GND
PRODUCT DESCRIPTION
The AD9057 is an 8-bit monolithic analog-to-digital converter
optimized for low cost, low power, small size, and ease of use.
With a 40 MSPS, 60 MSPS or 80 MSPS encode rates capabil-
ity and full-power analog bandwidth of 120 MHz, the compo-
nent is ideal for applications requiring excellent dynamic
performance.
To minimize system cost and power dissipation, the AD9057
includes an internal +2.5 V reference and a track-and-hold
circuit. The user must provide only a +5 V power supply and an
encode clock. No external reference or driver components are
required for many applications.
The AD9057’s encode input is TTL/CMOS compatible and the
8-bit digital outputs can be operated from +5 V or +3 V supplies.
A power-down function may be exercised to bring total con-
sumption to < 10 mW. In power-down mode the digital outputs
are driven to a high impedance state.
Fabricated on an advanced BiCMOS process, the AD9057 is
available in a space saving 20-lead surface mount plastic pack-
age (20 SSOP) and is specified over the industrial (–40°C to
+85°C) temperature range.
Customers desiring multichannel digitization may consider the
AD9059, a dual 8-bit, 60 MSPS monolithic based on the
AD9057 ADC core. The AD9059 is available in a 28-lead sur-
face mount plastic package (28 SSOP) and is specified over the
industrial temperature range.
FEATURES
8-Bit, Low Power ADC:200 mW Typical
120 MHz Analog Bandwidth
On-Chip +2.5 V Reference and T/H
1 V p-p Analog Input Range
Single +5 V Supply Operation
+5 V or +3 V Logic Interface
Power-Down Mode:< 10 mW
Three Performance Grades (40 MSPS, 60 MSPS, 80 MSPS)
APPLICATIONS
Digital Communications (QAM Demodulators)
RGB & YC/Composite Video Processing
Digital Data Storage Read Channels
Medical Imaging
Digital Instrumentation
PIN CONFIGURATION
PWRDN
D0 (LSB)
VREF OUT
VREF IN
GND
VDD
GNDVD
BIAS OUT
AIN
GND
ENCODED7 (MSB)
AD9057–SPECIFICATIONS
(VD = +5 V, VDD = +3 V; external reference)
NOTESGain error and gain temperature coefficient are based on the ADC only (with a fixed +2.5 V external reference).tV and tPD are measured from the 1.5 V level of the ENCODE to the 10%/90% levels of the digital output swing. The digital output load during test is not to exceed
an ac load of 10 pF or a dc current of ±40 μA.SNR/harmonics based on an analog input voltage of –0.5 dBFS referenced to a 1.0 V full-scale input range.Digital supply current based on VDD = +3 V output drive with <10 pF loading under dynamic test conditions.Power dissipation is based on specified encode and 10.3 MHz analog input dynamic test conditions (VD = +5 V ± 5%, VDD = +3 V ± 5%).Typical thermal impedance for the RS style (SSOP) 20-pin package:θJC = 46°C/W, θCA = 80°C/W, θJA = 126°C/W.
Specifications subject to change without notice.
AD9057N + 3
N + 1
N + 2N + 4
N + 5
AIN
ENCODE
DIGITAL
OUTPUTS
tPDN + 2
EXPLANATION OF TEST LEVELS
AD9057
ABSOLUTE MAXIMUM RATINGS
VD, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
Analog Inputs . . . . . . . . . . . . . . . . . . . . –0.5 V to VD + 0.5 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . –0.5 V to VDD + 0.5 V
VREF Input . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VD + 0.5 V
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . –65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . +175°C
Maximum Case Temperature . . . . . . . . . . . . . . . . . . +150°C
ORDERING GUIDE
*RS = Shrink Small Outline (SSOP).
Table I.Digital Coding (VREF = +2.5 V)
PIN DESCRIPTIONS
PIN CONFIGURATION
PWRDN
D0 (LSB)
VREF OUT
VREF IN
GND
VDD
GNDVD
BIAS OUT
AIN
GND
ENCODED7 (MSB)
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD9057 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
Figure 5.Harmonic Distortion vs. AIN Frequency
FREQUENCY – MHz
–20
Figure 6.Two-Tone Intermodulation Distortion
ENCODE RATE – MSPS102030405060708090
Figure 7.SINAD/SNR vs. Encode Rate
FREQUENCY – MHz
Figure 2.Spectral Plot 60 MSPS, 10.3 MHz
FREQUENCY – MHz
Figure 3.Spectral Plot 60 MSPS, 76 MHz
ANALOG INPUT FREQUENCY – MHz16020406080100120140
Figure 4.SINAD/SNR vs. AIN Frequency
AD9057–Typical Performance Characteristics
ENCODE RATE – MSPS
200
Figure 8.Power Dissipation vs. Encode Rate
TEMPERATURE – °C
44.0
Figure 9.SINAD/SNR vs. Temperature
TEMPERATURE – °C
GAIN ERROR – %
–1.0
Figure 10.ADC Gain vs. Temperature (with External
+2.5 V Reference)
TEMPERATURE – °C
tPD
– ns
7.511
Figure 11.tPD vs. Temperature/Supply (VDD = +3 V/+5 V)
ENCODE HIGH PULSE WIDTH – ns
44.510.96.77.5
Figure 12.SINAD/SNR vs. Encode Pulse Width
ADC GAIN – dB
ANALOG FREQUENCY – MHz
Figure 13.ADC Frequency Response

Partno	Mfg	Dc	Qty	Available	Descript
AD9057BRS-60 \|AD9057BRS60	AD	N/a	164	avai	8-Bit 40 MSPS/60 MSPS/80 MSPS A/D Converter