Rainbow Electronics MAX11043 - Manual

General Description
The MAX11043 features 4 single-ended or differential
channels of simultaneous-sampling ADCs with 16-bit
resolution. The MAX11043 contains a versatile filter
block and programmable-gain amplifier (PGA) per
channel. The filter consists of seven cascaded 2nd-
order filter sections for each channel, allowing the con-
struction of a 14th-order filter. The filter coefficients are
user-programmable. Configure each 2nd-order filter as
lowpass (LP), highpass (HP), or bandpass (BP) with
optional rectification. Gain and phase mismatch of the
analog signal path is better than -50dB.
The ADC can sample up to 800ksps per channel. A
40MHz serial interface provides communication to and
from the device. The SPI™ interface provides through-
put of 1600ksps; 4 channels at 400ksps per channel or
2 channels at 800ksps per channel. A software-selec-
table scan mode allows reading the ADC results while
simultaneously updating the DAC. Other features of the
MAX11043 include an internal (+2.5V) or external
(+2.0V to +2.8V) reference, power-saving modes, and
a PGA with gains of 1 to 64. The PGA includes an
equalizer (EQ) function that automatically boosts low-
amplitude, high-frequency signals for applications such
as CW-chirp radar.
The MAX11043 includes two 8-bit coarse DACs that set
the high and low references for a second-stage 12-bit
fine DAC, typically used for VCO control. Use software
controls to write to the DAC or step the DAC up and
down under hardware control in programmable steps.
The device operates from a +3.0V to +3.6V supply. The
MAX11043 is available in a 40-pin, 6mm x 6mm TQFN
package and operates over the extended -40°C to
+125°C temperature range.
Applications
Automotive Radar Systems
Data Acquisition Systems
Industrial Controls
Power-Grid Monitoring
Features
♦ 4 Single-Ended or Differential Channels of
Simultaneous-Sampling, 16-Bit ADCs
♦ ±10 LSB INL, ±1 LSB DNL, No Missing Codes
♦ 90dB SFDR, -86dB THD, 76dB SINAD,
77dB SNR at 100kHz Input
♦ PGA with Gain of 1, 2, 4, 8, 16, 32, or 64 for
Each Channel
♦ EQ Function Automatically Boosts
High-Frequency, Low-Amplitude Signals
♦ Seven-Stage Internal Programmable Biquad
Filters per Channel
♦ High Throughput, 400ksps per Channel for 4
Channels or 800ksps per Channel for 2 Channels
♦ Dual-Stage DAC
Two 8-Bit Coarse Reference DACs
12-Bit Fine DAC
♦ +2.5V Internal Reference or +2.0V to +2.8V
External Reference
♦ Single +3.3V Operation
♦ Shutdown and Power-Saving Modes
♦ 40-Pin, 6mm x 6mm TQFN Package
♦ -40°C to +125°C Operating Temperature
MAX11043
4-Channel, 16-Bit, Simultaneous-Sampling ADCs
with PGA, Filter, and 8-/12-Bit Dual-Stage DAC
________________________________________________________________ Maxim Integrated Products 1
MAX11043
TQFN
+
TOP VIEW
35
36
34
33
12
11
13
REFA
AINAP AVDD AGND DGND
14
AINBN
REFDACL AOUT AGND REFDACH REFDAC REFD DGND DVDD
1 2
REFBP
4 5 6 7
27 28 29 30 26 24 23 22
I.C.
AINCN
EOC
I.C.
SCLK
DIN
AINAN
AVDD
3
25
37 AINCP DOUT
38
39
40
REFC
REFB
AINBP
CS
CONVRUN
DACSTEP
*CONNECT EP TO AGND.
*EP
AGND
32
15
OSCIN AINDP
31
16
17
18
19
20 OSCOUT
DVDD DVREG
UP/DWN
SHDN
8 9 10
21
AINDN
Pin Configuration
Ordering Information
19-4250; Rev 0; 8/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
PART TEMP RANGE PIN-PACKAGE
MAX11043ATL+ -40°C to +125°C 40 TQFN-EP*
+ Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.
SPI is a trademark of Motorola, Inc.