MAX1184 Datasheet, PDF (1/21 Pages) Maxim Integrated Products – Dual 10-Bit, 20Msps, +3V, Low-Power ADC with Internal Reference and Parallel Outputs

19-2174; Rev 0; 10/01
Dual 10-Bit, 20Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
General Description
The MAX1184 is a +3V, dual 10-bit analog-to-digital
converter (ADC) featuring fully-differential wideband
track-and-hold (T/H) inputs, driving two pipelined, 9-
stage ADCs. The MAX1184 is optimized for low-power,
high-dynamic performance applications in imaging,
instrumentation, and digital communication applica-
tions. This ADC operates from a single +2.7V to +3.6V
supply, consuming only 105mW while delivering a typi-
cal signal-to-noise ratio (SNR) of 59.5dB at an input fre-
quency of 7.5MHz and a sampling rate of 20Msps. 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 MAX1184 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 an externally
derived reference, if desired for applications requiring
increased accuracy or a different input voltage range.
The MAX1184 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 MAX1184 is available in a 7mm x 7mm, 48-
pin TQFP package, and is specified for the extended
industrial (-40°C to +85°C) temperature range.
Pin-compatible higher speed versions of the MAX1184
are also available. Please refer to the MAX1180 data
sheet for 105Msps, the MAX1181 data sheet for
80Msps, the MAX1182 data sheet for 65Msps, and the
MAX1183 data sheet for 40Msps. In addition to these
speed grades, this family includes a 20Msps multi-
plexed 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
Multchannel IF Undersampling
Instrumentation
Video Application
Features
o Single +3V Operation
o Excellent Dynamic Performance:
59.5dB SNR at f_IN = 7.5MHz
74dB SFDR at f_IN = 7.5MHz
o Low Power:
35mA (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
o Evaluation Kit Available
PART
MAX1184ECM
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
MAX1184
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
48 TQFP-EP
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