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MAX190ACWGMAXIMN/a284avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190AENGMAXN/a5avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190AEWGMAXIMN/a9avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190BCNGMAXIMN/a2avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190BCWGMaxim N/a25avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190BENGMAXIMN/a20avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190BEWGMAXN/a1avaiLow-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX191BCWGTOSN/a5avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down
MAX191ACWGMAXIMN/a24avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down
MAX191AEWGMAXN/a748avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down
MAX191BCNGMAXIMN/a12avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down
MAX191BCWGMAXIMN/a10avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down
MAX191BENGMAXIMN/a28avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down
MAX191BEWGMAXIMN/a51avaiLow-Power / 12-Bit Sampling ADC with Internal Reference and Power-Down


MAX191AEWG ,Low-Power / 12-Bit Sampling ADC with Internal Reference and Power-DownFeatures . 12-Bit Resolution, 1/2LSB Linearity . +5V or 15V Operation (MAX191) . Built-InT ..
MAX191BCNG ,Low-Power / 12-Bit Sampling ADC with Internal Reference and Power-DownGeneral Description The MAX190/MAX191 are monolithic, CMOS, 12-bit ana- kog-to-digital converte ..
MAX191BCNG+ ,Low-Power, 12-Bit Sampling ADC with Internal Reference and Power-DownApplicationsMAX191AEWG -40°C to +85°C 24 Wide SO ±1/2Battery-Powered Data LoggingMAX191BEWG -40°C t ..
MAX191BCWG ,Low-Power / 12-Bit Sampling ADC with Internal Reference and Power-DownGeneral Description The MAX190/MAX191 are monolithic, CMOS, 12-bit ana- kog-to-digital converte ..
MAX191BCWG ,Low-Power / 12-Bit Sampling ADC with Internal Reference and Power-DownApplications Battery-Powered Data Logging PC Pen Digitizers High-Accuracy Process Control Ele ..
MAX191BCWG+ ,Low-Power, 12-Bit Sampling ADC with Internal Reference and Power-Downfeatures a logic power-downinput, which reduces the 3mA V supply current to ♦ 24-Pin Narrow DIP and ..
MAX487EPA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversMAX481/MAX483/MAX485/MAX487–MAX491/MAX148719-0122; Rev 5; 2/96Low-Power, Slew-Rate-LimitedRS-485/RS ..
MAX487EPA+ ,±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 TransceiversApplications:state. The receiver input has a fail-safe feature that guar-MAX3440E–MAX3444E: ±15kV E ..
MAX487ESA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversApplicationsMAX481C/D 0°C to +70°C Dice*Industrial-Control Local Area NetworksOrdering Information ..
MAX487ESA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversGeneral Description ________
MAX487ESA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversGeneral Description ________
MAX487ESA+ ,±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 TransceiversApplications:ate from a single +5V supply.MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,Drivers are short- ..


MAX190ACWG-MAX190AENG-MAX190AEWG-MAX190BCNG-MAX190BCWG-MAX190BENG-MAX190BEWG-MAX191ACWG-MAX191AEWG-MAX191BCNG-MAX191BCWG-MAX191BENG-MAX191BEWG
Low-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down
19-4506, Rev2: 4/93
MAX 191 RECOMMENDED FOR NEW DESIGNS
2flylL4lh2aheAy1]
Low-Power, 12-Biit Sampling A1005
with llnitemall Reference and PoweiiulDowin
General Description
The MAX190/MAX191 are monolithic, CMOS, 12-bit ana-
log-to-digital converters (ADCs) featuring differential in-
puts, track/hold (T/H), internal voltage reference, internal
or external clock, and parallel or serial " interface. Both
devices have a 7.505 conversion time. The MAX190 has
a 5/43 acquisition time and sampling rate of 76k samples
per second (ksps), while the MAX191 has a 2ps acquisi-
tion time and is guaranteed at 100ksps.
Decoupling capacitors are the only external components
needed forthe power supply and reference. These ADCs
operate with either an external reference, or an internal
reference that features an adjustment input for trimming
system gain errors.
Both the MAX190 and MAX191 operatetrom a single +5V
supply. The MAX191 also operates from dual eN sup-
plies, allowing ground-referenced bipolar input signals.
Both devices feature a logic power-down input, which
reduces the 3mA VDD supply current to 50PA max, includ-
ing the internal-reference current.
The MAX190/MAX191 provide three interface modes: two
8-bit parallel modes, and a serial interface mode that is
compatible with SPI, QSPi and MicrowireTM serial-inter-
face standards.
Applications
Battery-Powered Data Logging
PC Pen Digitizers
High-Accuracy Process Control
Electromechanical Systems
Data-Acquisition Boards for PCs
Automatic Testing Systems
Telecommunications
Digital-Signal Processing (DSP)
Features
0 12-Bit Resolution, 1/2LSB Linearity
t +5V or tSV Operation (MAX191)
t Built-lnTrack/Hold
0 Internal Reference with Adjustment Capability
. Low Power: 3mA Operating Mode
2011A Pdwer-D6wn Mode
. 100ksps Tested Sampling Rate (MAX191)
0 Serial and 8-Bit Parallel " Interface
. 24-Pin Narrow DIP and Wide SO Packages
Ordering Information
PART TEMP. RANGE PIN-PACKAGE 'ill'lfd
MAX190ACNG 0°C to +70°C 24Narrowf%skDIP :1/2
MAX190BCNG 0"C to +70"C 24Narcywf%st'cDIP ..+.1
MAX190ACWG 0°C to +70'C 24 Wide so KI /2
MAX190BCWG O'C to +70'C 24 Wide so tl
MAX190BC/D DC to +70''C Dice' :1
MAX190AENG -40''C to +85'C 24 Narrow Piasb'c DIP :1/2
MAX190BENG -40'C to +85°C 24 NarrowPlastic DIP :1
MAX190AEWG -40°C to +85'C 24 Wide so dcl/2
MAX190BEWG -4(YC to +85°C 24 Wide so "cl
MAX190AMRG -55''C to + 125'C 24 Narrow CERDIP" :1/2
MAX190BMRG -55°C to +125'C 24 Narrow CERDIP"
Ordering Information continued on last page.
. Dice are specified at TA = +25'C, DC parameters only.
"Contact factory for availability and processing to MIL-STD-MS.
Pin Configuration
Functional Diagram
11/013,51/ 40/10 (1001901 CLK/SCLK
E 1 4 I l' 123
VREF i 18
1raoo-e CSO. 3-CTATE --37 DHDOUT
OJIPUT -1Ti 06/500001
~75 05/551110
V -N-- 04
346V , 055151 ---i4-, 03/011
REF AND --- 02/010
12 SERiAL --2 01/09
= J, yo -- DO/DS
Al/ls-'" , - T I I
. 4 l a -
AIN--"-' L] IN REF 001 Lu-ci-i-); Si
Wx7sFI, 12-011 - 10010 = 005/
MAXIQI SARADC -il1 HBEN
T-l, 2L 2I 2
= 1 T VS t,ji-l 1u
AGND DGND (MAX191)
TOPVIEW . V
E Cf E] V00
AGND1V88)E Eil CLK/SCLK
AiN+ IE Eil PAR
AIN- E in HBEN
REFADJ E MAX197 E RD
AGND Li] Gl 07/0001
BIF’ [E [Lil DB/SCLKOU/
ITir7 E E] 0035100
00/08 IE Cs] 04
01/09 E E 03/011
0010 E E] 02/010
( iARE FOR MAX191 ONLY
DlP/SO
TM Mcryrre is a registered trademark ol Nationai Semiconductor
Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.
#6 fl-XVW/Ofi fl-XVW
MAX 1] QUIMAX 17 911
Low-Power, 12-13111 Sampling ADCS
with [Internal Reference and Power-Down
ABSOLUTE MAXIMUM RATINGS
VDD to DGND ..................... _ _ . -O.3V to +7V Operating Temperature Ranges:
vss to AGND (MAX191) . . . . _ ............. -7V to +0.3V MAX19_C, ..................... . . 0'0 to +700
VDD to Vss (MAX191) -_C_F--_Fr__FVF. 12V MAX19_E_ T ........................ -40"C to +850
AGND, VREF,_REFADJ to DGND _ ' _ -O.3V to (VDD + 0.3V) MAX19_M, . ' . _ _ . .............. -55''C to +125 C
AIN+, AIN-, fCD to VSS (MAX191) ....... -0.3V to (VDD + 0.3V) StorageTemperature Range T T . _ . ....... -65"C to +160C
AjN-r,_AIN-, PD to AGND (MAX190) . _ . _ -C13V to (VDD +0 3V) Lead Temperature (soldering, 10 se ) T T . _ _ . _ _ +300‘C
QRD, CLK, BIP, HBEN, PAR, to DGND _-O/Y/ to (VDD +O,3V)
BUSY, DO-D7 to DGND .............. -0.3V to (VDD + 0.3V)
Continuous Power Dissipation (TA = +70"C)
Narrow Plastic DIP (derate 1333rnW(C above +70°C) . 1067mW
Wide SC) (derate 1r76mW/'C above +70°C) - 941mW
Narrow CERDIP (derate 12.50mWfC above +70"C) . 1000mW
Stresses beyond those listed under ”Absolute Maximum Ratings"may cause permanent damage to the dewce, These are stress ratings only, and functional
operation of the dewce at these or any other conditions beyond those md/cated In the operaI/ona/ sect/ons of the specmcations IS not Implied Exposure to
absolule maximum rating conditions for extended periods may affect device reliability,
ELECTRICAL CHARACTERISTICS
(VDD = S/ 16%, l/SS = 0V or _5V i5% (MAX191 only), few = 1.6MH2. 50% duty cycle. AIN- = AGND, BIP = GND, slow-memory mode, mternal»
reference mode, external-reference compensation mode, synchronous operation, Figure 6, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)
PARAMETER I SYMBOL i CONDITIONS MIN TYP MAX l UNITS
DC ACCURACY (Note 2) i
Resolution 12 Bits
_ MAX19_A i1/2
IntegralNonlinearity INL ' LSB
MAX19_B - i1
[Mterential Nonlinearity DNL No missing codes over temperature :1 LSB
MAX19_A Il
Offset Error LSB
MAX19_B - i2 W
. MAX19_A i2
Gain-Error (Note 3) - LSB
MAX19_B - 13
Gain-Error Tempco (Note 4) l Excludes internal-reference drift $0.2 ppmf C
DYNAMIC ACCURACY (sample rate = 76kHz for the MAX190, and 100kHz for the MAX191.V1N = 4Vrrp)
'eiro-Noise plus Distortion S1NAD 1kHz input signal, TA = +250 70 dB
Total Harmonic Distortion . - ,
(up to the Sth Harmonic) THD 1kHz Input signal, TA - +25 C ~80 . dB
Spurious-Free Dynamic Range SFDR 1kHz input signal, TA = +250 80 1 dB
CONVERSION RATE
MAX190, synchronous CLK (12 to 12.5 CLKs) 7.50 7 81 W!
Conversion Time (Note 5) tCONv MAX191, synchronous CLK (12 to 13 CLKs) 7.50 8 125 us
MAX190/MAX191. internal CLK, CL = 120pF 6 12 18
T . _ MAX190 5
Track/Hold Acqusition Time - 115
MAX191
Aperture Delay 25 ns
ApertureJitter 50 ps
External Clock Frequency
jange (Note 6) fCLK 0,1 1.6 MHz
2 lM/IXI/l/I
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