16-Channel, 12-Bit Voltage-Output DAC
with 14-Bit Increment Mode
AD5516*
FEATURES
High Integration:
16-Channel DAC in 12 mm ؋ 12 mm CSPBGA
14-Bit Resolution via Increment/Decrement Mode
Guaranteed Monotonic
Low Power, SPI®, QSPI™, MICROWIRE™, and
DSP Compatible
3-Wire Serial Interface
Output Impedance 0.5 ⍀
Output Voltage Range
؎2.5 V (AD5516-1)
؎5 V (AD5516-2)
؎10 V (AD5516-3)
Asynchronous Reset Facility (via RESET Pin)
Asynchronous Power-Down Facility (via PD Pin)
Daisy-Chain Mode
Temperature Range: –40؇C to +85؇C
APPLICATIONS
Level Setting
Instrumentation
Automatic Test Equipment
Optical Networks
Industrial Control Systems
Data Acquisition
Low Cost I/O
GENERAL DESCRIPTION
The AD5516 is a 16-channel, 12-bit voltage-output DAC. The
selected DAC register is written to via the 3-wire serial interface. DAC selection is accomplished via address bits A3–A0.
14-bit resolution can be achieved by fine adjustment in Increment/Decrement Mode (Mode 2). The serial interface operates
at clock rates up to 20 MHz and is compatible with standard
SPI, MICROWIRE, and DSP interface standards. The output
voltage range is fixed at ± 2.5 V (AD5516-1), ± 5 V (AD5516-2),
and ± 10 V (AD5516-3). Access to the feedback resistor in each
channel is provided via the R FB0 to R FB15 pins.
The device is operated with AVCC = 5 V ± 5%, DVCC = 2.7 V
to 5.25 V, VSS = –4.75 V to –12 V, and VDD = +4.75 V to +12 V,
and requires a stable 3 V reference on REF_IN.
PRODUCT HIGHLIGHTS
1. Sixteen 12-bit DACs in one package, guaranteed monotonic.
2. Available in a 74-lead CSPBGA package with a body size of
12 mm ϫ 12 mm.
FUNCTIONAL BLOCK DIAGRAM
DVCC
AVCC
VDD
REF_IN
VBIAS
VSS
ROFFS
R FB
AD5516
VOUT0
DAC
RESET
ROFFS
BUSY
ANALOG
CALIBRATION
LOOP
R FB
ROFFS
R FB
MODE1
ROFFS
DCEN
SCLK
DIN
MODE2
7-BIT BUS
DOUT SYNC
R FB
RFB15
VOUT15
DAC
INTERFACE
CONTROL
LOGIC
RFB 14
VOUT14
DAC
12-BIT BUS
DGND
RFB1
VOUT1
DAC
DACGND
AGND
RFB0
POWER-DOWN
LOGIC
PD
*Protected by U.S. Patent No. 5,969,657; other patents pending.
REV. B
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