MXB7843EEE-T Maxim Integrated, MXB7843EEE-T Datasheet - Page 4

• Manufacturer Part Number: MXB7843EEE-T
• Description: Touch Screen Converters & Controllers
• Manufacturer: Maxim Integrated
• Type: Resistive Touch Controllersr

Specifications of MXB7843EEE-T

• Input Type: 1 TSC
• Data Rate: 125 KSPS
• Resolution: 8 bit, 12 bit
• Interface Type: 3-Wire, 4-Wire, QSPI, SPI
• Supply Voltage: 2.375 V to 5.25 V
• Supply Current: 270 uA
• Operating Temperature: - 40 C to + 85 C
• Package / Case: QSOP-16
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: -40 C
• Mounting Style: SMD/SMT
• Supply Voltage - Max: 5.25 V
• Supply Voltage - Min: 2.375 V

TIMING CHARACTERISTICS (Figure 1)
(V
T
2.375V to 5.25V, 4-Wire Touch-Screen
Controller
4
Note 1: Tested at V
Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has
Note 3: Offset nulled.
Note 4: Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 5: Resistance measured from the source to drain of the switch.
Note 6: ADC performance is limited by the conversion noise floor, typically 300µV
MIN
TIMING CHARACTERISTICS (Figure 1)
Acquisition Time
DCLK Clock Period
DCLK Pulse Width High
DCLK Pulse Width Low
DIN-to-DCLK Setup Time
DIN-to-DCLK Hold Time
CS Fall-to-DCLK Rise Setup Time
CS Rise-to-DCLK Rise Ignore
DCLK Falling-to-DOUT Valid
CS Rise-to-DOUT Disable
CS Fall-to-DOUT Enable
DCLK Falling-to-BUSY Rising
CS Falling-to-BUSY Enable
CS Rise-to-BUSY Disable
DD
_______________________________________________________________________________________
to T
= 2.7V to 3.6V, V
been calibrated.
promise the ADC performance.
MAX
PARAMETER
, unless otherwise noted. Typical values are at T
DD
REF
= +2.7V.
= 2.5V, f
DCLK
SYM B O L
t
t
t
t
t
ACQ
t
t
t
t
t
t
CSS
CSH
t
t
BDV
t
BTR
DO
CH
DH
BD
CP
CL
DS
TR
DV
= 2MHz (50% duty cycle), f
C
C
C
LOAD
LOAD
LOAD
= 50pF
= 50pF
= 50pF
A
= +25°C.)
CONDITIONS
SAMPLE
= 125kHz, 12-bit mode, 0.1µF capacitor at REF, T
P-P
. An external reference below 2.5V can com-
MIN
500
200
200
100
100
1.5
0
0
TYP
MAX
200
200
200
200
200
200
UNITS
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
A
=