MAX1190 Datasheet, PDF (1/21 Pages) Maxim Integrated Products – Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs

19-2524; Rev 0; 7/02
Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
General Description
The MAX1190 is a 3.3V, dual 10-bit analog-to-digital con-
verter (ADC) featuring fully differential wideband track-
and-hold (T/H) inputs, driving two ADCs. The MAX1190 is
optimized for low power, small size, and high-dynamic
performance for applications in imaging, instrumentation,
and digital communications. This ADC operates from a
single 2.8V to 3.6V supply, consuming only 492mW while
delivering a typical signal-to-noise and distortion (SINAD)
of 57dB at an input frequency of 60MHz and a sampling
rate of 120Msps. The T/H driven input stages incorporate
400MHz (-3dB) input amplifiers. The converters can also
be operated with single-ended inputs. In addition to low
operating power, the MAX1190 features a 3mA 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 this internal or an externally applied ref-
erence, if desired, for applications requiring increased
accuracy or a different input voltage range.
The MAX1190 features parallel, CMOS-compatible three-
state outputs. The digital output format can be set to two’s
complement or straight offset binary through a single con-
trol pin. The device provides for a separate output power
supply of 1.7V to 3.6V for flexible interfacing with various
logic families. The MAX1190 is available in a 7mm ✕
7mm, 48-pin TQFP-EP package, and is specified for the
extended industrial (-40°C to +85°C) temperature range.
Pin-compatible lower speed versions of the MAX1190 are
also available. Refer to the MAX1180–MAX1184 data
sheets for 105Msps/80Msps/65Msps/40Msps. In addition
to these speed grades, this family includes two multi-
plexed output versions (MAX1185/MAX1186 for
20Msps/40Msps), for which digital data is presented
time-interleaved and on a single, parallel 10-bit output
port.
For lower speed, pin-compatible, 8-bit versions of the
MAX1190, refer to the MAX1195–MAX1198 data sheets.
Applications
Baseband I/Q Sampling
Multichannel IF Sampling
Ultrasound and Medical Imaging
Battery-Powered Instrumentation
WLAN, WWAN, WLL, MMDS Modems
Set-Top Boxes
VSAT Terminals
Features
o Single 3.3V Operation
o Excellent Dynamic Performance
57dB SINAD at f_IN = 60MHz
64dBc SFDR at f_IN = 60MHz
o -71dBc Interchannel Crosstalk at f_IN = 60MHz
o Low Power
492mW (Normal Operation)
10mW (Sleep Mode)
3.3µW (Shutdown Mode)
o 0.08dB Gain and 0.8° Phase Matching
o Wide ±1V_P-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 Pin-Compatible, Lower-Speed, 10-Bit and 8-Bit
Versions Available
Ordering Information
PART
TEMP RANGE
MAX1190ECM
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
48 TQFP-EP*
Functional Diagram appears at end of data sheet.
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
MAX1190
TQFP-EP
36 D1A
35 D0A
34 OGND
33 OV_DD
32 OVDD
31 OGND
30 D0B
29 D1B
28 D2B
27 D3B
26 D4B
25 D5B
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