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PDF MAX1192 Data sheet ( Hoja de datos )
| Número de pieza | MAX1192 | |
| Descripción | Dual 8-Bit ADC | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-2835; Rev 2; 7/09
Ultra-Low-Power, 22Msps, Dual 8-Bit ADC
General Description
The MAX1192 is an ultra-low-power, dual, 8-bit, 22Msps
analog-to-digital converter (ADC). The device features
two fully differential wideband track-and-hold (T/H) inputs.
These inputs have a 440MHz bandwidth and accept fully
differential or single-ended signals. The MAX1192 deliv-
ers a typical signal-to-noise and distortion (SINAD) of
48.6dB at an input frequency of 5.5MHz and a sampling
rate of 22Msps while consuming only 27.3mW. This ADC
operates from a 2.7V to 3.6V analog power supply. A sep-
arate 1.8V to 3.6V supply powers the digital output driver.
In addition to ultra-low operating power, the MAX1192
features three power-down modes to conserve power
during idle periods. Excellent dynamic performance,
ultra-low power, and small size make the MAX1192 ideal
for applications in imaging, instrumentation, and digital
communications.
An internal 1.024V precision bandgap reference sets
the full-scale range of the ADC to ±0.512V. A flexible
reference structure allows the MAX1192 to use its inter-
nal reference or accept an externally applied reference
for applications requiring increased accuracy.
The MAX1192 features parallel, multiplexed, CMOS-
compatible tri-state outputs. The digital output format is
offset binary. A separate digital power input accepts a
voltage from 1.8V to 3.6V for flexible interfacing to dif-
ferent logic levels. The MAX1192 is available in a 5mm
× 5mm, 28-pin thin QFN package, and is specified for
the extended industrial (-40°C to +85°C) temperature
range.
For higher sampling frequency applications, refer to the
MAX1195–MAX1198 dual 8-bit ADCs. Pin-compatible
versions of the MAX1192 are also available. Refer to the
MAX1191 data sheet for 7.5Msps, and the MAX1193
data sheet for 45Msps.
Applications
Ultrasound and Medical Imaging
IQ Baseband Sampling
Battery-Powered Portable Instruments
Low-Power Video
WLAN, Mobile DSL, WLL Receiver
Features
o Ultra-Low Power
27.3mW (Normal Operation: 22Msps)
1.8µW (Shutdown Mode)
o Excellent Dynamic Performance
48.6dB/47.2dB SNR at fIN = 5.5MHz/125MHz
70dBc/69dBc SFDR at fIN = 5.5MHz/125MHz
o 2.7V to 3.6V Single Analog Supply
o 1.8V to 3.6V TTL/CMOS-Compatible Digital
Outputs
o Fully Differential or Single-Ended Analog Inputs
o Internal/External Reference Option
o Multiplexed CMOS-Compatible Tri-State Outputs
o 28-Pin Thin QFN Package
o Evaluation Kit Available (Order MAX1193EVKIT)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX1192ETI-T
-40°C to +85°C 28 Thin QFN-EP*
-Denotes a package containing lead(Pb).
*EP = Exposed paddle.
T = Tape and reel.
TOP VIEW
Pin Configuration
PD1 22
PD0 23
REFIN 24
COM 25
REFN 26
REFP 27
VDD 28
MAX1192
EXPOSED PADDLE
14 D6
13 D7
12 OVDD
11 OGND
10 GND
9 VDD
8 VDD
5mm x 5mm THIN QFN
________________________________________________________________ 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.
1 page  
Ultra-Low-Power, 22Msps, Dual 8-Bit ADC
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.0V, OVDD = 1.8V, VREFIN = VDD (internal reference), CL ≈ 10pF at digital outputs, fCLK = 22MHz, CREFP = CREFN = CCOM =
0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
POWER REQUIREMENTS
Analog Supply Voltage
Digital Output Supply Voltage
SYMBOL
VDD
OVDD
CONDITIONS
MIN TYP MAX UNITS
2.7 3.0 3.6 V
1.8
VDD
V
Normal operating mode, fIN = 1.875MHz
at -0.5dB FS, fCLK = 7.5MHz,
CLK input from GND to VDD
4.2 5.0
Normal operating mode, fIN = 5.5MHz
at -0.5dB FS, fCLK = 22MHz,
CLK input from GND to VDD
9.1 10.5
Analog Supply Current
Idle mode (tri-state), fIN = 1.875MHz at -
0.5dB FS, fCLK = 7.5MHz, CLK input from
GND to VDD
IDD
Idle mode (tri-state), fIN = 5.5MHz at
-0.5dB FS, fCLK = 22MHz, CLK input from
GND to VDD
4.2
9.1
mA
Standby mode, fCLK = 7.5MHz, CLK input
from GND to VDD
Standby mode, fCLK = 22MHz, CLK input
from GND to VDD
Shutdown mode, CLK = GND or VDD,
PD0 = PD1 = OGND
2.3
4.9
0.6 5.0 µA
Digital Output Supply Current
(Note 3)
IODD
Normal operating mode,
fIN = 1.875MHz at -0.5dB FS,
fCLK = 7.5MHz, CL ≈ 10pF
Normal operating mode,
fIN = 5.5MHz at -0.5dB FS,
fCLK = 22MHz, CL ≈ 10pF
Idle mode (tri-state), DC input,
CLK = GND or VDD,
PD0 = OVDD, PD1 = OGND
Standby mode, DC input, CLK = GND or
VDD, PD0 = OGND, PD1 = OVDD
Shutdown mode, CLK = GND or VDD,
PD0 = PD1 = OGND
1.0
mA
2.9
0.1 5.0
µA
0.1
0.1 5.0
_______________________________________________________________________________________ 5
5 Page 
Ultra-Low-Power, 22Msps, Dual 8-Bit ADC
Typical Operating Characteristics (continued)
(VDD = 3.0V, OVDD = 1.8V, VREFIN = VDD (internal reference), CL ≈ 10pF at digital outputs, differential input at -0.5dB FS, fCLK =
22.005678MHz at 50% duty cycle, TA = +25°C, unless otherwise noted.)
SIGNAL-TO-NOISE RATIO
vs. SAMPLING RATE
50
fIN = 5.512345MHz
49
48
47
46
45
0
10 20 30 40 50 60
fCLK (MHz)
SIGNAL-TO-NOISE AND DISTORTION
vs. SAMPLING RATE
50
fIN = 5.512345MHz
49
48
47
46
45
0
10 20 30 40 50 60
fCLK (MHz)
TOTAL HARMONIC DISTORTION
vs. SAMPLING RATE
-50
fIN = 5.512345MHz
-55
-60
-65
-70
-75
-80
0
10 20 30 40 50 60
fCLK (MHz)
SPURIOUS-FREE DYNAMIC RANGE
vs. SAMPLING RATE
80
fIN = 5.512345MHz
75
70
65
60
55
50
0
10 20 30 40 50 60
fCLK (MHz)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet MAX1192.PDF ] | |
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