MXB7843EEE+ Maxim Integrated Products, MXB7843EEE+ Datasheet - Page 4

• Manufacturer Part Number: MXB7843EEE+
• Description: IC CNTRLR TOUCH RES 16QSOP
• Manufacturer: Maxim Integrated Products
• Type: Resistiver

Specifications of MXB7843EEE+

• Touch Panel Interface: 4-Wire
• Number Of Inputs/keys: 1 TSC
• Resolution (bits): 12 b
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Data Rate/sampling Rate (sps, Bps): 125k
• Voltage Reference: External
• Voltage - Supply: 2.38 V ~ 5.25 V
• Current - Supply: 650µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Output Type: Digital
• Interface: 4-Wire Serial
• Input Type: Analog
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
=