AD7394 ,+3/+5V Dual, Serial-Input 12-Bit DACapplications the AD7395AR is specified for operation over thepositive supply V or any value in betw ..
AD7394AR ,+3 V, Dual, Serial Input 12-/10-Bit DACsapplications the AD7395AR is specified for operation over thepositive supply V or any value in betw ..
AD7396AN ,3 V, Parallel Input Dual 12-Bit /10-Bit DACsapplications in a thin 1.1 mm heightinterface to fast processors without wait states. The doubleTSS ..
AD7396AR ,3 V, Parallel Input Dual 12-Bit /10-Bit DACsCHARACTERISTICS (@ V = +2.5 V, –408C < T < +858C, unless otherwise noted)REF IN AParameter Symbol C ..
AD7397AR ,3 V, Parallel Input Dual 12-Bit /10-Bit DACsCHARACTERISTICS (@ V = +2.5 V, –408C < T < +858C, unless otherwise noted)REF IN AParameter Symbol C ..
AD7397ARU ,3 V, Parallel Input Dual 12-Bit /10-Bit DACsCHARACTERISTICSPower Supply Range V DNL < – 1 LSB 2.7/5.5 2.7/5.5 V min/maxDD RANGEPositive Supply ..
ADF4106BCP ,PLL Frequency Synthesizerspecifications are given as typical values. 3Use a square wave for lower frequencies, below the mi ..
ADF4106BCPZ , PLL Frequency Synthesizer
ADF4106BCPZ-R7 , PLL Frequency Synthesizer
ADF4106BRU ,PLL Frequency SynthesizerCHARACTERISTICSREFIN Input Frequency 20/250 20/250 MHz min/max For f < 20 MHz, Use DC-CoupledSquare ..
ADF4106BRU-REEL , PLL Frequency Synthesizer
ADF4106BRUZ-R7 , PLL Frequency Synthesizer
AD7394
+3/+5V Dual, Serial-Input 12-Bit DAC
REV.0
+3 V, Dual, Serial Input
12-/10-Bit DACs
FUNCTIONAL BLOCK DIAGRAM
CLK
SDI
(DATA)
LDA
LDB
DGNDMSBRSSHDN
VOUTA
VOUTB
VDDVREF
AGND
FEATURES
Micropower: 100 mA/DAC
0.1 mA Typical Power Shutdown
Single-Supply +2.7 V to +5.5 V Operation
Compact 1.1 mm Height TSSOP-14 Package
AD7394/12-Bit Resolution
AD7395/10-Bit Resolution
Serial Interface with Schmitt Trigger Inputs
APPLICATIONS
Automotive Output Span Voltage
Portable Communications
Digitally Controlled Calibration
PC Peripherals
GENERAL DESCRIPTIONThe AD7394/AD7395 family of dual, 12-/10-bit, voltage output
digital-to-analog converters is designed to operate from a single
+3 V supply. Built using a CBCMOS process, this monolithic
DAC offers the user low cost and ease of use in single-supply
+3 V systems. Operation is guaranteed over the supply voltage
range of +2.7 V to +5.5 V making this device ideal for battery
operated applications.
The full-scale output voltage is determined by the applied exter-
nal reference input voltage, VREF. The rail-to-rail VREF input
to VOUT outputs allows for a full-scale voltage set equal to the
positive supply VDD or any value in between.
A doubled-buffered serial data interface offers high speed,
microcontroller compatible inputs using serial-data-in (SDI),
clock (CLK) and load strobe (LDA + LDB) pins. A chip-select
(CS) pin simplifies connection of multiple DAC packages by
enabling the clock input when active low. Additionally, an RS
input sets the output to zero scale or to 1/2 scale based on the
logic level applied to the MSB pin. The power shutdown pin,
SHDN, reduces power dissipation to nanoamp current levels.
All digital inputs contain Schmitt-triggered logic levels to mini-
mize power dissipation and prevent false triggering on the clock
input.
Both parts are offered in the same pinout to allow users to select
the amount of resolution appropriate for their application with-
out circuit card redesign.
The AD7394/AD7395 is specified over the extended industrial
(–40°C to +85°C) temperature range. Packages available in-
clude plastic DIP and low profile 1.75 mm height SO-14 surface
mount packages. The AD7395ARU is available for ultracompact
applications in a thin 1.1 mm TSSOP-14 package. For automotive
applications the AD7395AR is specified for operation over the
(–40°C to +125°C) temperature range.
Figure 1.Differential Nonlinearity Error vs. Code
AD7394/AD7395–SPECIFICATIONS
AD7394 12-BIT RAIL-TO-RAIL VOLTAGE OUT DAC
ELECTRICAL CHARACTERISTICSNOTESOne LSB = VREF/4096 V for the 12-bit AD7394.The first two codes (000H, 001H) are excluded from the linearity error measurement.These parameters are guaranteed by design and not subject to production testing.Typicals represent average readings measured at +25°C.
(@ VREF IN = 2.5 V, –408C < TA < +858C, unless otherwise noted)
AD7394/AD7395AD7395 10-BIT RAIL-TO-RAIL VOLTAGE OUT DAC
ELECTRICAL CHARACTERISTICSSTATIC PERFORMANCE
REFERENCE INPUT
ANALOG OUTPUT
LOGIC INPUTS
INTERFACE TIMING
AC CHARACTERISTICS
SUPPLY CHARACTERISTICS
NOTESOne LSB = VREF/4096 V for the 10-bit AD7395.The first two codes (000H, 001H) are excluded from the linearity error measurement.These parameters are guaranteed by design and not subject to production testing.Typicals represent average readings measured at +25°C.All input control signals are specified with tR = tF = 2 ns (10% to 90% of +3 V) and timed from a voltage level of 1.6 V.The settling time specification does not apply for negative going transitions within the last three LSBs of ground.
(@ VREF IN = 2.5 V, –408C < TA < +858C/+1258C, unless otherwise noted)
AD7394/AD7395
Table I.Control Logic Truth TableNOTES
1. ↑+ positive logic transition; ↓– negative logic transition; X Don’t Care
2. Do not clock in serial data while level sensitive inputs LDA or LDB are logic LOW.
61 LSB
ERROR BANDSDI
CLK
LDA,B
SDI
CLKVOUT
LDA,BFigure 2.Timing Diagram
Figure 3.Timing Diagram
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 the AD7394/AD7395 features proprietary ESD protection circuitry, permanent dam-
age 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 RATINGS*VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V, +7 V
VREF to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V, VDD
Logic Inputs to GND . . . . . . . . . . . . . . . . . . . . .–0.3 V, +8 V
VOUT to GND . . . . . . . . . . . . . . . . . . . . .–0.3 V, VDD + 0.3 V
IOUT Short Circuit to GND . . . . . . . . . . . . . . . . . . . . .50 mA
Package Power Dissipation . . . . . . . . . . . . .(TJ max – TA)/θJA
Thermal Resistance θJA
14-Lead Plastic DIP Package (N-14) . . . . . . . . . .103°C/W
14-Lead SOIC Package (R-14) . . . . . . . . . . . . . . .158°C/W
14-Lead Thin Shrink Surface Mount (RU-14) . . .180°C/W
Maximum Junction Temperature (TJ max) . . . . . . . . . .150°C
ORDERING GUIDEThe AD7394/AD7395 contains 709 transistors. The die size measures 70 mil × 99 mil.
Operating Temperature Range . . . . . . . . . . .–40°C to +85°C
AD7395AR and AD7395AN Only . . . . . .–40°C to +125°C
Storage Temperature Range . . . . . . . . . . . .–65°C to +150°C
Lead Temperature␣N-14 (Soldering, 10 sec) . . . . . . . . . . . . . . . . . . . . . .+300°C␣R-14 (Vapor Phase, 60 sec) . . . . . . . . . . . . . . . . . . . .+215°C␣RU-14 (Infrared, 15 sec) . . . . . . . . . . . . . . . . . . . . . .+224°C
*Stresses above those listed under Absolute Maximum Ratings may cause
permanent damage to the device. This is a stress rating only; functional operation
of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Table II.AD7394 Serial Input Register Data Format, Data Is Loaded in MSB-First Format
MSBLSB
Table III.AD7395 Serial Input Register Data Format, Data Is Loaded in MSB-First Format
MSBLSB
AD7394/AD7395
PIN FUNCTION DESCRIPTIONS
PIN CONFIGURATIONS
