AD5370_15 Datasheet, PDF (1/29 Pages) Analog Devices – 40-Channel,16-Bit, Serial Input, Voltage Output DAC

40-Channel,16-Bit,
Serial Input, Voltage Output DAC
AD5370
FEATURES
40-channel DAC in a 64-lead LFCSP and a 64-lead LQFP
Guaranteed monotonic to 16 bits
Maximum output voltage span of 4 × VREF (20 V)
Nominal output voltage span of −4 V to +8 V
Multiple, independent output spans available
System calibration function allowing user-programmable
offset and gain
Channel grouping and addressing features
Thermal shutdown function
DSP/microcontroller-compatible serial interface
SPI serial interface
2.5 V to 5.5 V digital interface
Digital reset (RESET)
Clear function to user-defined SIGGNDx
Simultaneous update of DAC outputs
APPLICATIONS
Level setting in automatic test equipment (ATE)
Variable optical attenuators (VOA)
Optical switches
Industrial control systems
Instrumentation
FUNCTIONAL BLOCK DIAGRAM
DV_CC V_DD V_{SS AGND DGND}
LDAC
SYNC
SDI
SCLK
SDO
BUSY
RESET
CLR
CONTROL
REGISTER
16
8 _{A/B SELECT} 8
TO
REGISTER
MUX2
16
X1A
REGISTER
16
X2A
16 REGISTER
16
X1B
X2B
16 ^REGISTER
16
REGISTER
M REGISTER
16
16
C REGISTER
SERIAL
INTERFACE
16
X1A
REGISTER
16
X1B
16 ^REGISTER
M REGISTER
16
C REGISTER
16
16
16
X2A
16 REGISTER
X2B
REGISTER
STATE
MACHINE
16
8 _{A/B SELECT} 8
TO
REGISTER
MUX2
16
X1A
REGISTER
16
X2A
16 REGISTER
16
X1B
X2B
16 ^REGISTER
16
REGISTER
M REGISTER
16
16
C REGISTER
AD5370
16
X1A
REGISTER
16
X1B
16 ^REGISTER
M REGISTER
16
C REGISTER
16
16
16
X2A
16 REGISTER
X2B
REGISTER
16
OFS0
16
OFFSET
REGISTER
DAC 0
BUFFER
GROUP 0
BUFFER _{OUTPUT BUFFER}
AND
16
DAC 0 ¹⁶
REGISTER
DAC 0
POWER-DOWN
CONTROL
16
DAC 7 ¹⁶
REGISTER
DAC 7
OUTPUT BUFFER
AND
POWER-DOWN
CONTROL
16
OFS1
16
OFFSET
REGISTER
DAC 1
BUFFER
GROUP 1
BUFFER _{OUTPUT BUFFER}
AND
16
DAC 0 ¹⁶
REGISTER
DAC 0
POWER-DOWN
CONTROL
16
DAC 7 ¹⁶
REGISTER
DAC 7
OUTPUT BUFFER
AND
POWER-DOWN
CONTROL
GROUP 2 TO GROUP 4
ARE THE SAME AS GROUP 1
Figure 1.
SIGGND2 SIGGND3 SIGGND4
VREF0
VOUT0
VOUT1
VOUT2
VOUT3
VOUT4
VOUT5
VOUT6
VOUT7
SIGGND0
VREF1
VOUT8
VOUT9
VOUT10
VOUT11
VOUT12
VOUT13
VOUT14
VOUT15
SIGGND1
VOUT16
TO
VOUT39
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2008 Analog Devices, Inc. All rights reserved.