MAX5631_06 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 16-Bit DACs with 32-Channel Sample-and-Hold Outputs

19-2171; Rev 3; 1/05
16-Bit DACs with 32-Channel
Sample-and-Hold Outputs
General Description
The MAX5631/MAX5632/MAX5633 are 16-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.
The MAX5631/MAX5632/MAX5633 feature a -4.5V to
+9.2V output voltage range. Other features include a
200µV/step resolution, with output linearity error, typi-
cally 0.005% 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.
These devices are controlled through a 20MHz
SPI™/QSPI™/MICROWIRE™-compatible 3-wire serial
interface. Immediate Update Mode allows any chan-
nel’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 after data has been loaded.
Each device features an output clamp and output resis-
tors for filtering. The MAX5631 features a 50Ω output
impedance and is capable of driving up to 250pF of out-
put capacitance. The MAX5632 features a 500Ω output
impedance and is capable of driving up to 10nF of output
capacitance. The MAX5633 features a 1kΩ output imped-
ance and is capable of driving up to 10nF of output
capacitance.
The MAX5631/MAX5632/MAX5633 are available in 12mm
x 12mm, 64-pin TQFP, and 10mm x 10mm, 68-pin thin
QFN packages.
________________________Applications
MEMS Mirror Servo Control
Industrial Process Control
Automatic Test Equipment
Instrumentation
Pin Configurations continued at end of data sheet.
Features
o Integrated 16-Bit DAC and 32-Channel SHA with
SRAM and Sequencer
o 32 Voltage Outputs
o 0.005% Output Linearity
o 200µV Output Resolution
o Flexible Output Voltage Range
o Remote Ground Sensing
o Fast Sequential Loading: 1.3µs per Register
o Burst and Immediate Mode Addressing
o No External Components Required for Setting
Gain and Offset
o Integrated Output Clamp Diodes
o Three Output Impedance Options:
MAX5631 (50Ω), MAX5632 (500Ω), and
MAX5633 (1kΩ)
Ordering Information
PART
TEMP RANGE*
PIN-PACKAGE
MAX5631UCB
0°C to +85°C
64 TQFP
MAX5631UTK
0°C to +85°C
68 Thin QFN
MAX5632UCB
0°C to +85°C
64 TQFP
MAX5632UTK
0°C to +85°C
68 Thin QFN
MAX5633UCB
0°C to +85°C
64 TQFP
MAX5633UTK
0°C to +85°C
68 Thin QFN
*For other temperature-range options, contact factory.
Pin Configurations
TOP VIEW
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
N.C. 1
N.C. 2
GS 3
VLDAC 4
RST 5
CS 6
DIN 7
SCLK 8
VLOGIC 9
IMMED 10
ECLK 11
CLKSEL 12
DGND 13
VLSHA 14
AGND 15
VSS 16
MAX5631
MAX5632
MAX5633
48 VDD
47 CH
46 VSS
45 OUT20
44 OUT19
43 OUT18
42 OUT17
41 OUT16
40 AGND
39 VDD
38 OUT15
37 OUT14
36 OUT13
35 OUT12
34 OUT11
33 CL
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
TQFP
________________________________________________________________ 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.