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MAX1184 Datasheet

  • MAX1184

  • "Dual 10-Bit, 20Msps, +3V, Low-Power ADC with Internal Refer...

  • Maxim   Maxim

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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 1碌A(chǔ) 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鈥檚 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擄C to +85擄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.
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)
1碌A(chǔ) (Shutdown Mode)
o
0.02dB Gain and 0.25擄 Phase Matching (typ)
o
Wide 鹵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鈥擳wo鈥檚
Complement or Offset Binary
o
48-Pin TQFP Package with Exposed Pad for
Improved Thermal Dissipation
o
Evaluation Kit Available
MAX1184
Ordering Information
PART
MAX1184ECM
TEMP. RANGE
-40擄C to +85擄C
PIN-PACKAGE
48 TQFP-EP
Pin Configuration
REFN
REFP
REFIN
REFOUT
D9A
D8A
D7A
D6A
D5A
D4A
D3A
D2A
48
47
46
45
44
43
42
41
40
39
38
Applications
High Resolution Imaging
I/Q Channel Digitization
Multchannel IF Undersampling
Instrumentation
Video Application
COM
V
DD
GND
INA+
INA-
V
DD
GND
INB-
INB+
GND
V
DD
CLK
37
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
36
35
34
33
32
31
30
29
28
27
26
25
D1A
D0A
OGND
OV
DD
OV
DD
OGND
D0B
D1B
D2B
D3B
D4B
D5B
MAX1184
GND
T/B
SLEEP
PD
GND
V
DD
V
DD
48 TQFP-EP
________________________________________________________________
Maxim Integrated Products
OE
D9B
D8B
D7B
D6B
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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