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MAX1234 Datasheet

  • MAX1234

  • ?à15kV ESD-Protected Touch- Screen Controllers Include DAC ...

  • Maxim   Maxim

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鹵15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
MAX1233/MAX1234
ABSOLUTE MAXIMUM RATINGS
AV
DD
to GND............................................................-0.3V to +6V
DV
DD
to AV
DD
.......................................................-0.3V to +0.3V
Digital Inputs/Outputs to GND .................-0.3V to (DV
DD
+ 0.3V)
X+, Y+, X-, Y-, AUX1, AUX2,
and REF to GND ..................................-0.3V to (AV
DD
+ 0.3V)
BAT1, BAT2 to GND .................................................-0.3V to +6V
Maximum ESD per IEC 1000-4-2 (per MIL STD-883 HBM)
X+, X-, Y+, Y-, AUX1, AUX2, BAT1, BAT2......................鹵15kV
All Other Pins.....................................................................鹵2.5kV
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70擄C)
28-Pin QFN (derate 28.5mW/擄C above +70擄C) .................2W
Operating Temperature Range ...........................-40擄C to +85擄C
Storage Temperature Range .............................-60擄C to +150擄C
Lead Temperature (soldering, 10s) .................................+300擄C
Stresses beyond those listed under 鈥淎bsolute Maximum Ratings鈥?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
(DV
DD
= AV
DD
= +2.7V to +3.6V (MAX1233), DV
DD
= AV
DD
= +4.75V to +5.25V (MAX1234), external reference V
REF
= 2.5V
(MAX1233), V
REF
= 4.096V (MAX1234); f
SCLK
= 10MHz, f
SAMPLE
= 50ksps, 12-bit mode, 0.1碌F capacitor at REF, T
A
= -40擄C to
+85擄C, unless otherwise noted. Typical values are at T
A
= +25擄C.)
PARAMETER
DC ACCURACY
(Note 1)
Resolution
No Missing Codes
Relative Accuracy (Note 2)
Differential Nonlinearity
Offset Error
INL
DNL
12-bit mode
10-bit and 8-bit modes
12-bit mode
10-bit and 8-bit modes
12-bit mode
10-bit and 8-bit modes
12-bit mode
Gain Error (Note 3)
10-bit mode
8-bit mode
Total Unadjusted Error
Offset Temperature Coefficient
Gain Temperature Coefficient
Channel-to-Channel Offset
Channel-to-Channel Gain
Matching
Noise
Including internal V
REF
Full-scale
input
MAX1233
AV
DD
= DV
DD
= +2.7V to +3.6V
MAX1234
AV
DD
= DV
DD
= +5V
鹵5%
TUE
12-bit mode
10-bit and 8-bit modes
Software-programmable 8/10/12 bit
11
鹵0.8
鹵0.5
鹵0.8
鹵0.5
鹵0.5
鹵0.5
鹵0.5
鹵0.5
鹵0.5
鹵2
鹵1
鹵0.4
鹵0.4
鹵0.1
鹵0.1
50
鹵0.4
mV
鹵0.3
LSB
ppm/擄C
ppm/擄C
LSB
LSB
碌V
RMS
鹵4
LSB
鹵4
鹵2
鹵2
12
Bits
Bits
LSB
LSB
LSB
SYMBOL
CONDITIONS
ANALOG-TO-DIGITAL CONVERTER
MIN
TYP
MAX
UNITS
Power-Supply Rejection
PSR
DYNAMIC SPECIFICATIONS (1kHz SINE WAVE, V
IN
= 2.5V
P-P
FOR MAX1233, V
IN
= 4.096V
P-P
FOR MAX1234, 50ksps,
f
SCLK
= 10MHz)
Signal-to-Noise Plus Distortion
SINAD
69
dB
2
_______________________________________________________________________________________

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