19-3563; Rev 1; 5/05
12-Bit DACs with 32-Channel
Sample-and-Hold Outputs
General Description
Features
♦ Integrated 12-Bit DAC and 32-Channel SHA with
SRAM and Sequencer
The MAX5331/MAX5332/MAX5333 are 12-bit digital-to-
analog converters (DACs) with 32 sample-and-hold
(SHA) outputs for applications where a high number of
programmable voltages are required. These devices
include a clock oscillator and a sequencer that updates
the DAC with codes from an internal SRAM. No external
components are required to set offset and gain.
♦ 32 Voltage Outputs
♦ 0.03% FSR (typ) Output Linearity
♦ 3.2mV Output Resolution
♦ Flexible Output Voltage Range
♦ Remote Ground Sensing
The MAX5331/MAX5332/MAX5333 feature a -4.5V to
+9.2V output voltage range. Other features include a
3.2mV/step resolution, with output linearity error, typi-
cally 0.03% of full-scale range (FSR). The 100kHz
refresh rate updates each SHA every 320µs, resulting
in negligible output droop. Remote ground sensing
allows the outputs to be referenced to the local ground
of a separate device.
♦ Fast Sequential Loading: 1.3µs per Register
♦ Burst- and Immediate-Mode Addressing
♦ No External Components Required for Setting
Gain and Offset
♦ Integrated Output Clamp Diodes
♦ Three Output-Impedance Options
MAX5331 (50Ω), MAX5332 (500Ω), and
MAX5333 (1kΩ)
These devices are controlled through a 20MHz
SPI™/QSPI™/MICROWIRE™-compatible 3-wire serial
interface. Immediate update mode allows any channel’s
output to be updated within 20µs. Burst mode allows
multiple values to be loaded into memory in a single,
high-speed data burst. All channels are updated within
330µs of data being loaded.
Ordering Information
PART
TEMP RANGE
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
PIN-PACKAGE
64 TQFP
MAX5331UCB
MAX5331UTK*
MAX5332UCB
MAX5332UTK*
MAX5333UCB
68 Thin QFN
64 TQFP
Each device features an output clamp and output resis-
tors for filtering. The MAX5331 features a 50Ω output
impedance and is capable of driving up to 250pF of
output capacitance. The MAX5332 features a 500Ω out-
put impedance and is capable of driving up to 10nF of
output capacitance. The MAX5333 features a 1kΩ out-
put impedance and is capable of driving up to 10nF of
output capacitance.
68 Thin QFN
64 TQFP
MAX5333UTK*
0°C to +85°C
68 Thin QFN
*Future product—contact factory for availability.
Pin Configurations
The MAX5331/MAX5332/MAX5333 are available in 12mm
x 12mm, 64-pin TQFP and 10mm x 10mm, 68-pin thin
QFN packages.
TOP VIEW
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
N.C.
N.C.
GS
1
2
3
4
5
6
7
8
9
48
47 CH
46
V
DD
________________________Applications
V
SS
MEMS Mirror Servo Control
Industrial Process Control
Automatic Test Equipment
Instrumentation
V
45 OUT20
44 OUT19
43 OUT18
42 OUT17
41 OUT16
40 AGND
LDAC
RST
CS
DIN
SCLK
MAX5331
MAX5332
MAX5333
V
LOGIC
IMMED 10
ECLK 11
39 V
DD
38 OUT15
37 OUT14
36 OUT13
35 OUT12
34 OUT11
33 CL
CLKSEL 12
DGND 13
V
14
AGND 15
16
LSHA
V
SS
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
TQFP
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.