MAX1180 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – Dual 10-Bit, 105Msps, +3.3V, Low-Power ADC with Internal Reference and Parallel Outputs

19-2097; Rev 0; 7/01
Dual 10-Bit, 105Msps, +3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
General Description
The MAX1180 is a +3.3V, dual 10-bit, analog-to-digital
converter (ADC) featuring fully-differential wideband
track-and-hold (T/H) inputs, driving two pipelined, nine-
stage ADCs. The MAX1180 is optimized for low-power,
high-dynamic performance applications in imaging,
instrumentation, and digital communication applica-
tions. The MAX1180 operates from a single +2.7V to
+3.6V supply, consuming only 413mW, while delivering
a typical signal-to-noise ratio (SNR) of 58.5dB at an
input frequency of 20MHz and a sampling rate of
105Msps. The T/H driven input stages incorporate
400MHz (-3dB) input amplifiers. The converters may
also be operated with single-ended inputs. In addition
to low operating power, the MAX1180 features a 2.8mA
sleep mode, as well as a 1µA power-down mode to
conserve power during idle periods.
An internal +2.048V precision bandgap reference sets
the full-scale range of the ADC. A flexible reference
structure allows the use of the internal or external
reference, if desired for applications requiring
increased accuracy or a different input voltage range.
The MAX1180 features parallel, CMOS-compatible
three-state outputs. The digital output format is set to
two’s complement or straight offset binary through a
single control pin. The device provides for a separate
output power supply of +1.7V to +3.6V for flexible inter-
facing. The MAX1180 is available in a 7mm ✕ 7mm, 48-
pin TQFP package, and is specified for the extended
industrial (-40°C to +85°C) temperature range.
Pin-compatible higher and lower speed versions of the
MAX1180 are also available. Please refer to the
MAX1181 data sheet for 80Msps, the MAX1182 data
sheet for 65Msps, the MAX1183 data sheet for 40Msps,
and the MAX1184 data sheet for 20Msps. In addition to
these speed grades, this family includes a 20Msps mul-
tiplexed output version (MAX1185), for which digital
data is presented time-interleaved on a single, parallel
10-bit output port.
Applications
High Resolution Imaging
I/Q Channel Digitization
Multichannel IF Undersampling
Instrumentation
Video Application
Features
o Single +3.3V Operation
o Excellent Dynamic Performance:
58.5dB SNR at f_IN = 20MHz
72dB SFDR at f_IN = 20MHz
o SNR Flat within 1dB for f_IN = 202MHz to 100MHz
o Low Power:
125mA (Normal Operation)
2.8mA (Sleep Mode)
1µA (Shutdown Mode)
o 0.02dB Gain and 0.25° Phase Matching (typ)
o Wide ±1Vp-p Differential Analog Input Voltage
Range
o 400MHz, -3dB Input Bandwidth
o On-Chip +2.048V Precision Bandgap Reference
o User-Selectable Output Format—Two’s
Complement or Offset Binary
o 48-Pin TQFP Package with Exposed Pad for
Improved Thermal Dissipation
PART
MAX1180ECM
Ordering Information
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
48 TQFP-EP
Pin Configuration
COM 1
V_DD 2
GND 3
INA+ 4
INA- 5
V_DD 6
GND 7
INB- 8
INB+ 9
GND 10
V_DD 11
CLK 12
MAX1180
36 D1A
35 D0A
34 OGND
33 OV_DD
32 OV_DD
31 OGND
30 D0B
29 D1B
28 D2B
27 D3B
26 D4B
25 D5B
Functional Diagram appears at end of data sheet.
48 TQFP-EP
________________________________________________________________ Maxim Integrated Products 1
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