AD7339BS ,5 V Integrated High Speed ADC/Quad DAC SystemGENERAL DESCRIPTIONREFERENCEVREFAThe AD7339 is a composite IC that contains both DAC andAVDDADC fun ..
AD7339BS ,5 V Integrated High Speed ADC/Quad DAC SystemSPECIFICATIONS wise noted)Parameter B Version Units Test Conditions/CommentsADC ADCCLK = 2.048 MHzR ..
AD734 ,10 MHz, 4-Quadrant Multiplier/DividerSPECIFICATIONSA S S LTRANSFER FUNCTION
AD7339BS
5 V Integrated High Speed ADC/Quad DAC System
REV.0
5 V Integrated High Speed ADC/Quad
DAC System
FUNCTIONAL BLOCK DIAGRAM
FEATURES
8-Bit A/D Converter
Two 8-Bit D/A Converters
Two 8-Bit Serial D/A Converters
Single +5 V Supply Operation
On-Chip Reference
Power-Down Mode
52-Lead PQFP Package
GENERAL DESCRIPTIONThe AD7339 is a composite IC that contains both DAC and
ADC functions. The device includes an 8-bit parallel A-to-D
converter. Two 8-bit parallel DACs are also included as are two
serial control DACs. These serial DACs are 8-bit DACs.
The AD7339, which operates with a single 5 V power supply,
has a bandgap reference on board with a nominal value of 2.5 V.
To reduce the power consumption of the part, each section,
except the reference, can be individually powered down when
not in use.
The AD7339 is available in a 52-lead PQFP package.
AD7339–SPECIFICATIONS1
(AVDD = DVDD = +5 V 6 10%, AGND = DGND = 0 V, TA = TMIN to TMAX, unless other-
wise noted)
AD7339LOGIC OUTPUTS
POWER SUPPLIES
NOTESOperating temperature range is as follows: B Version; –40°C to +85°C.
Specifications subject to change without notice.
ANALOG OUTPUT VOLTAGE
OUTPUT VOLTAGE – Volts
2VREFFigure 1.Analog Output Voltage from Serial DACs vs. Power Supply
AD7339
TIMING CHARACTERISTICSADC
t14
t15
t16
(AVDD = +5 V 6 10%; AGND = DGND = 0 V; TA = TMlN to TMAX, unless otherwise noted)
+2.1V
2mA
IOH
OUTPUT
PIN
IOL
1mAFigure 2.Load Circuit for Timing Specifications
ADCCLK
D0 – D7
SAMPLE NSAMPLE N–1SAMPLE N–2SAMPLE N+1SAMPLE N+2Figure 3.ADC Timing
DACCLK
DA0 – DA7
DB0 – DB7
DACA
DACBFigure 4.Parallel DACs Timing
Figure 5.Serial DACs Timing
AD7339
CAUTIONESD (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 this device 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.
ABSOLUTE MAXIMUM RATINGS1(TA = +25°C unless otherwise noted)
AVDD, DVDD to GND . . . . . . . . . . . . . . . . .–0.3 V to +7 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . .–0.3 V to +0.3 V
Digital I/O Voltage to DGND . . . . . .–0.3 V to VDD + 0.3 V
ADC Analog Input Voltage . . . . . . . . . . . . . . . . . . . . . . .±2 V
Input/Output Current at any Pin Except Supplies2 . . .20 mA
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . . . . . . .–40°C to +85°C
Storage Temperature Range . . . . . . . . . . . .–65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . .+150°C
PQFP, θJA Thermal Impedance . . . . . . . . . . . . . . . . .90°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . .+220°C
ORDERING GUIDENOTESStresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect device reliability.Transient currents of up to 100 mA will not cause SCR latchup.
