MAX11043 Datasheet, PDF (1/33 Pages) Maxim Integrated Products – 4-Channel, 16-Bit, Simultaneous-Sampling ADCs with PGA, Filter, and 8-/12-Bit Dual-Stage DAC

19-4250; Rev 2; 3/11
EVAALVUAAILTAIOBNLEKIT
4-Channel, 16-Bit, Simultaneous-Sampling ADCs
with PGA, Filter, and 8-/12-Bit Dual-Stage DAC
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 digitize signals up to 200kHz. A 40MHz
serial interface provides communication to and from the
device. The SPI™ interface provides throughput 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
o 4 Single-Ended or Differential Channels of
Simultaneous-Sampling, 16-Bit ADCs
o ±10 LSB INL, ±1 LSB DNL, No Missing Codes
o 93dB SFDR at 100kHz Input
o PGA with Gain of 1, 2, 4, 8, 16, 32, or 64 for
Each Channel
o EQ Function Automatically Boosts
High-Frequency, Low-Amplitude Signals
o Seven-Stage Internal Programmable Biquad
Filters per Channel
o High Throughput, 400ksps per Channel for 4
Channels
o Dual-Stage DAC
Two 8-Bit Coarse Reference DACs
12-Bit Fine DAC
o +2.5V Internal Reference or +2.0V to +2.8V
External Reference
o Single +3.3V Operation
o Shutdown and Power-Saving Modes
o 40-Pin, 6mm x 6mm TQFN Package
o -40°C to +125°C Operating Temperature
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX11043ATL+
-40°C to +125°C
40 TQFN-EP*
MAX11043ATL/V+** -40°C to +125°C
40 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
*EP = Exposed pad.
**Future product—contact factory for availability.
Pin Configuration
TOP VIEW
30 29 28 27 26 25 24 23 22 21
AINDN 31
20 OSCOUT
AINDP 32
19 OSCIN
AGND 33
18 EOC
REFBP 34
17 I.C.
I.C. 35
AINCN 36
MAX11043
16 SCLK
15 DIN
AINCP 37
14 DOUT
REFC 38
+
REFB 39
*EP
13 CS
12 CONVRUN
AINBP 40
11 DACSTEP
1 2 3 4 5 6 7 8 9 10
SPI is a trademark of Motorola, Inc.
*CONNECT EP TO AGND.
TQFN
________________________________________________________________ Maxim Integrated Products 1
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.