MAX1205EMH+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1205EMH+ ,+5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADCFeaturesThe MAX1205 is a 14-bit, monolithic, analog-to-digital♦ Monolithic, 14-Bit, 1Msps ADCconver ..
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MAX1205EMH+
+5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC
General Description
The MAX1205 is a 14-bit, monolithic, analog-to-digital
converter (ADC) capable of conversion rates up to
1Msps. This integrated circuit, built on a CMOS pro-
cess, uses a fully differential, pipelined architecture
with digital error correction and a short self-calibration
procedure that corrects for capacitor and gain mis-
matches and ensures 14-bit linearity at full sample
rates. An on-chip track/hold (T/H) maintains superb
dynamic performance up to the Nyquist frequency. The
MAX1205 operates from a single +5V supply.
The fully differential inputs allow an input swing of
±VREF. The reference is also differential, with the posi-
tive reference (RFPF) typically connected to +4.096V
and the negative reference (RFNF) connected to ana-
log ground. Additional sensing pins (RFPS, RFNS) are
provided to compensate for any resistive-divider action
that may occur due to finite internal and external resis-
tances in the reference traces and the on-chip resis-
tance of the reference pins. A single-ended input is
also possible using two operational amplifiers.
The power dissipation is typically 257mW at +5V, at a
sampling rate of 1Msps. The device employs a CMOS-
compatible, 14-bit parallel, two’s complement output
data format. For higher sampling rates, the MAX1201 is
a 2.2Msps pin-compatible upgrade to the MAX1205.
The MAX1205 is available in an MQFP package, and
operates over the commercial (0°C to +70°C) and the
extended (-40°C to +85°C) temperature ranges.
Applications
Imaging
Communications
Medical
Scanners
Data Acquisition
FeatureMonolithic, 14-Bit, 1Msps ADC+5V Single SupplySNR of 80dB for fIN= 500kHzSFDR of 87dB for fIN= 500kHzLow Power Dissipation: 257mWOn-Demand Self-CalibrationDifferential Nonlinearity Error: ±0.3LSBIntegral Nonlinearity Error: ±1.2LSBThree-State, Two’s Complement Output DataV Single-Supply, 1Msps, 14-Bitlf-Calibrating ADC
DAV
CLK
DVDD
DGND
DGND
DVDD
TEST1
TEST2
TEST3
ST_CAL
AGND
AVDD
AGND
AGND
AVDD
DOR
D13
D12
D11
D10
TOP VIEW
MQFP
MAX1205
19-4794; Rev 0; 11/98
PART
MAX1205CMH
MAX1205EMH-40°C to +85°C
0°C to +70°C
TEMP. RANGEPIN-PACKAGE
44 MQFP
44 MQFP
EVALUATION KIT
AVAILABLE
Pin Configuration
Ordering Information
V Single-Supply, 1Msps, 14-Bitlf-Calibrating ADCABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(AVDD= +5V ±5%, DVDD= DRVDD= +3.3V, VRFPS= +4.096V, VRFNS= AGND, VCM= +2.048V, VIN= -0.5dBFS, fCLK= 2.048MHz,
digital output load ≤20pF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
AVDDto AGND, DGND..........................................................+7V
DVDDto DGND, AGND..........................................................+7V
DRVDDto DGND, AGND.......................................................+7V
INP, INN, RFPF, RFPS, RFNF, RFNS,
CLK, CM.................................(AGND - 0.3V) to (AVDD+ 0.3V)
Digital Inputs to DGND............................-0.3V to (DVDD+ 0.3V)
Digital Output (DAV) to DGND..............-0.3V to (DRVDD+ 0.3V)
Other Digital Outputs to DGND.............-0.3V to (DRVDD+ 0.3V)
Continuous Power Dissipation (TA= +70°C)
44-Pin MQFP (derate 11.11mW/°C above +70°C)........889mW
Operating Temperature Ranges (TA)
MAX1205CMH.....................................................0°C to +70°C
MAX1205EMH..................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
REFERENCE/EXTERNAL
TRANSFER CHARACTERISTICS
DYNAMIC SPECIFICATIONS (Note 6)
ANALOG INPUT
To full-scale step (0.006%)3tADAperture Delay410tOVR100tACQAcquisition Time
Overvoltage Recovery Time
MHz3.3Full-Power Bandwidth
MHz78Small-Signal Bandwidth
After calibration, guaranteed
fSAMPLE= fCLK / 2
LSB-1±0.3+1DNLDifferential Nonlinearity
LSB±1.2INL
Bits14RESResolution (no missing codes)
(Note 5)
Integral Nonlinearity
fSAMPLE
Cycles4Conversion Time (Pipeline
Delay/Latency)
Msps1.024fSAMPLEMaximum Sampling Rate
%FSR-0.2±0.003+0.2Offset Error
%FSR-5-3.0+5Gain Error
μVRMS75Input-Referred Noise
Differential
Single-ended
Per side in track mode
CONDITIONS
±4.096±4.5V4.0964.5VINInput Voltage Range
(Notes 2, 3)7001000Reference Input Resistance55RIInput Resistance (Note 4)21CIInput Capacitance (Note 3)4.0964.5VREFReference Voltage (Note 3)
UNITSMINTYPMAXSYMBOLPARAMETER
V Single-Supply, 1Msps, 14-Bitlf-Calibrating ADCELECTRICAL CHARACTERISTICS (continued)
(AVDD= +5V ±5%, DVDD= DRVDD= +3.3V, VRFPS= +4.096V, VRFNS= AGND, VCM= +2.048V, VIN= -0.5dBFS, fCLK= 2.048MHz,
digital output load ≤20pF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)55GainOffsetPSRRPower-Supply Rejection Ratio
sec0.1Warm-Up Time257377PDSSPower Dissipation
10pF loads on D0–D13 and DAVmA0.10.6I(DRVDD)Output Drive Supply Current3DVDDDRVDDOutput Drive Supply Voltage4.7555.25AVDDAnalog Supply Voltage35.25DVDDDigital Supply Voltage0.41.2I(DVDD)Digital Supply Current
fIN= 504.5kHz
fIN= 300.5kHz
fIN= 99.5kHz
fIN= 504.5kHz
fIN= 300.5kHz
fIN= 99.5kHz
fIN= 300.5kHz
fIN= 504.5kHz
fIN= 99.5kHz
Spurious-Free Dynamic Range
(Note 5)88SFDRdB91
THDTotal Harmonic Distortion
(Note 5)-85
SINADSignal-to-Noise Ratio plus
Distortion (Note 5)
CONDITIONSUNITSMINTYPMAXSYMBOLPARAMETER
fIN= 504.5kHz
fIN= 300.5kHz
fIN= 99.5kHz
81.5dB83
SNRSignal-to-Noise Ratio
(Note 5)5170I(AVDD)Analog Supply Current
POWER REQUIREMENTS
V Single-Supply, 1Msps, 14-Bitlf-Calibrating ADC= 20pFCONDITIONS187244301tCHClock High Time488tCLK4 / fSAMPLEtCONVConversion Time
Clock Period1675tRELBus Relinquish Time1675tACData Access Time187244301tCLClock Low Time70150tODOutput Delay1 / fCLKtDAVDAV Pulse Width65145tSCLK-to-DAV Rising Edge
UNITSMINTYPMAXSYMBOLPARAMETER
DIGITAL INPUTS AND OUTPUTS
(AVDD= +5V ±5%, DVDD= DRVDD= +3.3V, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
ISOURCE= 200μA
VIN_= 0 or DVDD
CONDITIONSInput Capacitance
DVDD
- 0.8VIH
0.8VILInput Low Voltage
Input High Voltage
DVDDDVDD
- 0.4- 0.03VOHOutput High Voltage
0.8CLKVILCLK Input Low Voltage
AVDD
- 0.8CLKVIHCLK Input High VoltageCCLKCLK Input Capacitance
±0.1±10IIN_Digital Input Current
MINTYPMAXSYMBOLPARAMETER
-10±1+10ICLKClock Input Current
±0.1±10ILEAKAGEThree-State Leakage Current
3.5COUTThree-State Output Capacitance
UNITS
TIMING CHARACTERISTICS
(AVDD= +5V ±5%, DVDD= DRVDD= +3.3V, fCLK= 2.048MHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at = +25°C.) (Note 1)tCLK / 2tACQAcquisition Time
Note 1:Reference inputs driven by operational amplifiers for Kelvin-sensed operation.
Note 2:For unipolar mode, the analog input voltage VINPmust be within 0V and VREF, VINN= VREF / 2; where VREF= VRFPS- VRFNS.
For differential mode, the analog inputs INP and INN must be within 0V and VREF; where VREF= VRFPS- VRFNS. The com-
mon mode of the inputs INP and INN is VREF / 2.
Note 3:Minimum and maximum parameters are not tested. Guaranteed by design.
Note 4:RIvaries inversely with sample rate.
Note 5:Calibration remains valid for temperature changes within ±20°C and power-supply variations ±5%.
Note 6:All AC specifications are shown for the differential mode.
ST_CAL = 1, Figure 8fCLK
cycles17,400tCALCalibration Time
ISINK= 1.6mA70400VOLOutput Low VoltagemV
V Single-Supply, 1Msps, 14-Bitlf-Calibrating ADCINTEGRAL NONLINEARITY vs.
TWO’S COMPLEMENT OUTPUT CODE
AX1205-01
TWO’S COMPLEMENT OUTPUT CODE
(L
DIFFERENTIAL NONLINEARITY vs.
TWO’S COMPLEMENT OUTPUT CODE
AX1205-02
TWO’S COMPLEMENT OUTPUT CODE
(L
SINGLE-TONE SPURIOUS-FREE DYNAMIC RANGE
vs. INPUT AMPLITUDE (fIN = 99.5kHz)
AX1205-03
INPUT AMPLITUDE (dBFS)
(d
dBFS
dBc100010010
SIGNAL-TO-NOISE RATIO PLUS
DISTORTION vs. INPUT FREQUENCY
AX1205-04
INPUT FREQUENCY (kHz)
(d
AIN = -0.5dBFS
AIN = -6dBFS
AIN = -20dBFS
TOTAL HARMONIC DISTORTION
vs. INPUT FREQUENCY
X1205-05
INPUT FREQUENCY (kHz)
(d
AIN = -20dBFS
AIN = -6dBFS
AIN = -0.5dBFS100010010
SIGNAL-TO-NOISE RATIO
vs. INPUT FREQUENCY
AX1205-06
INPUT FREQUENCY (kHz)
(d
AIN = -0.5dBFS
AIN = -6dBFS
AIN = -20dBFS
Typical Operating Characteristics
(AVDD= +5V ±5%, DVDD= DRVDD= +3.3V, VRFPS= +4.096V, VRFNS= AGND, VCM= +2.048V, differential input, fCLK= 2.048MHz,
calibrated, TA= +25°C, unless otherwise noted.)
SIGNAL-TO-NOISE RATIO PLUS DISTORTION
vs. SAMPLING RATE (fIN = 99.5kHz)
AX1205-07
SAMPLE RATE (Msps)
(d
AIN = -0.5dBFS
TYPICAL FFT
(fIN = 99.5kHz, 2048 VALUE RECORD)
X1205-08
FREQUENCY (kHz)
(d
V Single-Supply, 1Msps, 14-Bitlf-Calibrating ADCTYPICAL FFT
(fIN = 504.5kHz, 2048 VALUE RECORD)
AX1205-09
FREQUENCY (kHz)
(d
Typical Operating Characteristics (continued)
(AVDD= +5V ±5%, DVDD= DRVDD= +3.3V, VRFPS= +4.096V, VRFNS= AGND, VCM= +2.048V, differential input, fCLK= 2.048MHz,
calibrated, TA= +25°C, unless otherwise noted.) 100010010
EFFECTIVE NUMBER OF BITS
vs. INPUT FREQUENCY
AX1205-10
INPUT FREQUENCY (kHz)
(B
its
AIN = -0.5dBFS
AIN = -6dBFS
AIN = -20dBFS
Pin Description
PIN
Digital Input to Start Calibration.
ST_CAL = 0: Normal conversion mode.
ST_CAL = 1: Start self-calibration.
ST_CAL1
FUNCTIONNAME
Analog GroundAGND2, 4, 5
Data Out-of-Range BitDOR7
Analog Power Supply, +5V ±5%AVDD3, 6
Bit 12D129
Bit 10D1011
Bit 11D1110
Bit 13 (MSB)D138
Bit 8D813
Bit 6D615
Bit 7D714
Digital GroundDGND17, 28, 29
Bit 4D419
Bit 5D518
Digital Power Supply for the Output Drivers, +3V to +5.25V, DRVDD≤DVDDDRVDD16
Bit 9D912
Bit 2D221
Bit 3D320
Bit 0 (LSB)D023
Bit 1D122
Test Pin 3. Leave unconnected.TEST324

Partno	Mfg	Dc	Qty	Available	Descript
MAX1205EMH+ \|MAX1205EMH	MAXIM	N/a	2	avai	+5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC