MAX534

Features:

+4.5V to +5.5V Single-Supply Operation
Ultra-Low Supply Current:
0.8mA while Operating
2.5A in Shutdown Mode
Ultra-Small 16-Pin QSOP Package
Ground to VDD Reference Input Range
Output Buffer Amplifiers Swing Rail to Rail
10MHz Serial Interface Compatible with SPI, QSPI
(CPOL = CPHA = 0 or CPOL = CPHA = 1), and
Microwire
Double-Buffered Registers for Synchronous
Updating
Serial Data Output for Daisy Chaining
Power-On Reset Clears Serial Interface and Sets
All Registers to Zero
Software Shutdown
Software-Programmable Logic Output (C I/O
Extender)
Asynchronous Hardware Clear Resets All Internal
Registers to Zero


Pinout




Specifications

V_DD to DGND..............................................................-0.3V, +6V
V_DD to AGND...............................................................-0.3V, +6V
Digital Input Voltage to DGND....................................-0.3V, +6V
Digital Output Voltage to DGND....................-0.3V, (V_DD + 0.3V)
AGND to DGND..................................................................±0.3V
REF................................................................-0.3V, (V_DD + 0.3V)
OUT_...........................................................................-0.3V, _VDD
Maximum Current into Any Pin............................................50mA

Continuous Power Dissipation (T_A = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) .........842mW
QSOP (derate 8.3mW/°C above +70°C).....................667mW
CERDIP (derate 10.00mW/°C above +70°C)..............800mW
Operating Temperature Ranges
MAX534 _ C_ E..................................................0°C to +70°C
MAX534 _ E_ E...............................................-40°C to +85°C
MAX534 _ MJE ..............................................-55°C to +125°C
Storage Temperature Range.........................-65°C to +150°C
Lead Temperature (soldering, 10sec)...........................+300°C

Description

The MAX534 serial-input, voltage-output, 8-bit quad digital-to-analog converter (DAC) operates from a single +4.5V to +5.5V supply. Internal precision buffers swing rail to rail, and the reference input range includes both ground and the positive rail. The MAX534 features a 2.5A shutdown mode.
The serial interface is double buffered: a 12-bit input shift register is followed by four 8-bit buffer registers and four 8-bit DAC registers. The 12-bit serial word consists of eight data bits and four control bits (for DAC selection and special programming commands). Both the input and DAC registers can be updated independently or simultaneously with a single software command. Two additional asynchronous control pins, LDAC and CLR, provide simultaneous updating or clearing of the input and DAC registers.
The interface is compatible with SPI(TM), QSPI(TM) (CPOL = CPHA = 0 or CPOL = CPHA = 1), and Microwire(TM). A
buffered data output allows daisy chaining of serial devices.
In addition to 16-pin DIP and CERDIP packages, the MAX534 is available in a 16-pin QSOP that occupies the same area as an 8-pin SO.
For operation guaranteed to 2.7V, see the MAX533  data sheet.