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| MAX1185 Datasheet, PDF (2/20 Pages) Maxim Integrated Products – Dual 10-Bit, 20Msps, +3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs | |||
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Dual 10-Bit, 20Msps, +3V, Low-Power ADC with
Internal Reference and Multiplexed Parallel Outputs
ABSOLUTE MAXIMUM RATINGS
VDD, OVDD to GND ...............................................-0.3V to +3.6V
OGND to GND.......................................................-0.3V to +0.3V
INA+, INA-, INB+, INB- to GND ...............................-0.3V to VDD
REFIN, REFOUT, REFP, REFN, COM,
CLK to GND............................................-0.3V to (VDD + 0.3V)
OE, PD, SLEEP, T/B, D9A/BâD0A/B,
A/B to OGND .......................................-0.3V to (OVDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
48-Pin TQFP (derate 12.5mW/°C above +70°C).......1000mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under âAbsolute Maximum Ratingsâ 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.
ELECTRICAL CHARACTERISTICS
(VDD = +3V, OVDD = +2.5V, 0.1µF and 1µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through a
10k⦠resistor, VIN = 2Vp-p (differential w.r.t. COM), CL = 10pF at digital outputs (Note 5), fCLK = 20MHz,
TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
ANALOG INPUT
Differential Input Voltage
Range
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
INL
DNL
fIN = 7.5MHz
fIN = 7.5MHz, no missing codes guaranteed
10
Bits
±0.5 ±1.5 LSB
±0.25 ±1.0 LSB
< ±1 ±1.7 % FS
0
±2 % FS
VDIFF Differential or single-ended inputs
±1.0
V
Common-Mode Input Voltage
Range
VCM
Input Resistance
Input Capacitance
CONVERSION RATE
RIN Switched capacitor load
CIN
Maximum Clock Frequency
Data Latency
fCLK
CHA
CHB
DYNAMIC CHARACTERISTICS (fCLK = 20MHz, 4096-point FFT)
Signal-to-Noise Ratio
SNR
fINA or B = 7.5MHz, TA = +25°C
fINA or B = 12MHz
Signal-to-Noise and Distortion
SINAD
fINA or B = 7.5MHz, TA = +25°C
fINA or B = 12MHz
Spurious-Free Dynamic Range
SFDR
fINA or B = 7.5MHz, TA = +25°C
fINA or B = 12MHz
VDD/2
± 0.5
100
5
20
5
5.5
57.3 59.5
59.4
57
59.4
59.2
64
74
72
V
kâ¦
pF
MHz
Clock
Cycles
dB
dB
dBc
2 _______________________________________________________________________________________
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