AD5382BSTZ-5 Analog Devices Inc, AD5382BSTZ-5 Datasheet - Page 26

• Manufacturer Part Number: AD5382BSTZ-5
• Description: IC DAC 14BIT 32CH 5V 100-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD5382BSTZ-5

• Data Interface: Serial, Parallel
• Design Resources: 32 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5382 (CN0011) AD5382 Channel Monitor Function (CN0012)
• Settling Time: 8µs
• Number Of Bits: 14
• Number Of Converters: 32
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 65mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Resolution (bits): 14bit
• Sampling Rate: 125kSPS
• Input Channel Type: Parallel, Serial
• Supply Voltage Range - Analogue: 4.5V To 5.5V
• Supply Voltage Range -: RoHS Compliant
• Number Of Channels: 32
• Resolution: 14b
• Conversion Rate: 125KSPS
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Architecture: Resistor-String
• Power Supply Type: Analog and Digital
• Power Supply Requirement: Analog and Digital
• Output Type: Voltage
• Integral Nonlinearity Error: ±4+/- LSB
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD5382EB - BOARD EVAL FOR AD5382
• Lead Free Status / Rohs Status: Compliant

AD5382
AD5382 INTERFACES
The AD5382 contains both parallel and serial interfaces.
Furthermore, the serial interface can be programmed to
be either SPI-, DSP-, MICROWIRE-, or I
SER/ PAR pin selects parallel and serial interface modes.
In serial mode, the SPI /I
MICROWIRE, or I
The device uses an internal FIFO memory to allow high speed
successive writes in parallel interface mode. The user can con-
tinue writing new data to the device while write instructions are
being executed. The BUSY signal indicates the current status of
the device, going low while instructions in the FIFO are being
executed. In parallel mode, up to 128 successive instructions
can be written to the FIFO at maximum speed. When the FIFO
is full, further writes to the device are ignored.
To minimize both the power consumption of the device and
the on-chip digital noise, the active interface powers up fully
when only the device is being written to, that is, on the falling
edge of WR or the falling edge of SYNC .
DSP-, SPI-, MICROWIRE-COMPATIBLE SERIAL
INTERFACES
The serial interface can be operated with a minimum of three
wires in standalone mode or four wires in daisy-chain mode.
Daisy chaining allows many devices to be cascaded together to
increase system channel count. The SER/ PAR pin must be tied
high and the SPI /I
the DSP-, SPI-, MICROWIRE-compatible serial interface. In
serial interface mode, the user does not need to drive the
parallel input data pins. The serial interface’s control pins are as
follows:
Table 19. 32-Channel, 14-Bit DAC Serial Input Register Configuration
MSB
A/B
SYNC , DIN, SCLK—Standard 3-wire interface pins.
DCEN—Selects standalone mode or daisy-chain mode.
SDO—Data out pin for daisy-chain mode.
R/W
0
A4
2
2
C pin (Pin 97) should be tied low to enable
C interface mode.
A3
2
C pin is used to select DSP, SPI,
A2
A1
A0
REG1
2
C-compatible. The
REG0
DB13
Rev. B | Page 26 of 40
DB12
DB11
Figure 3 and Figure 5 show timing diagrams for a serial write to
the AD5382 in standalone and daisy-chain modes. The 24-bit
data-word format for the serial interface is shown in Table 19.
A /B. When toggle mode is enabled, this pin selects whether the
data write is to the A or B register. With toggle disabled, this bit
should be set to 0 to select the A data register.
R/ W is the read or write control bit.
A4–A0 are used to address the input channels.
REG1 and REG0 select the register to which data is written, as
shown in Table 11.
DB13–DB0 contain the input data-word.
X is a don’t care condition.
Standalone Mode
By connecting the DCEN (daisy-chain enable) pin low, stand-
alone mode is enabled. The serial interface works with both a
continuous and a noncontinuous serial clock. The first falling
edge of SYNC starts the write cycle and resets a counter that
counts the number of serial clocks to ensure that the correct
number of bits are shifted into the serial shift register. Any
further edges on SYNC except for a falling edge are ignored
until 24 bits are clocked in. Once 24 bits are shifted in, the
SCLK is ignored. For another serial transfer to take place, the
counter must be reset by the falling edge of SYNC .
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
LSB
DB0