MXB7846(2004) 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MXB7846
(Rev.:2004)
(Rev.:2004)
Maxim Integrated
MXB7846 Datasheet PDF : 23 Pages
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2.375V to 5.25V, 4-Wire Touch-Screen Controller
with Internal Reference and Temperature Sensor
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 2.7V to 3.6V, VREF = 2.5V, fDCLK = 2MHz (50% duty cycle), fSAMPLE = 125kHz, 12-bit mode, 0.1µF capacitor at REF, TA =
TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
EXTERNAL REFERENCE (Internal reference disabled, reference applied to REF)
Reference Input Voltage Range
(Note 7)
Input Resistance
Input Current
fSAMPLE = 125kHz
fSAMPLE = 12.5kHz
fDCLK = 0
BATTERY MONITOR (BAT)
Input Voltage Range
Input Resistance
During acquisition
Accuracy
VREF = 2.5V
Internal reference
TEMPERATURE MEASUREMENT
Resolution
Differential method (Note 8)
Single-conversion method
Accuracy
Differential method (Note 8)
Single-conversion method
DIGITAL INPUTS (DCLK, CS, DIN)
Input High Voltage
VIH
Input Low Voltage
VIL
Input Hysteresis
Input Leakage Current
VHYST
IIN
Input Capacitance
CIN
DIGITAL OUTPUT (DOUT, BUSY)
MIN TYP MAX UNITS
1
VDD
V
1
GΩ
13
40
µA
2.5
±3
0
6
V
10
kΩ
±2
%
±3
1.6
°C
0.3
°C
±2
°C
±3
°C
VDD ✕ 0.7
V
0.8
V
100
mV
±1
µA
15
pF
Output Voltage Low
Output Voltage High
PENIRQ Output Low Voltage
Three-State Leakage Current
Three-State Output Capacitance
POWER REQUIREMENTS
Supply Voltage
Supply Current
Shutdown Supply Current
Power-Supply Rejection Ratio
VOL
VOH
VOL
IL
COUT
ISINK = 250µA
ISOURCE = 250µA
50kΩ pullup to VDD
CS = VDD
CS = VDD
VDD
IDD
ISHDN
PSRR
External reference
Internal reference
External
reference
fSAMPLE = 125ksps
fSAMPLE = 12.5ksps
fSAMPLE = 0
Internal
reference
fSAMPLE = 125ksps
fSAMPLE = 12.5ksps
fSAMPLE = 0
DCLK = CS = VDD
VDD = 2.7V to 3.6V full scale
0.4
V
VDD - 0.5
V
0.8
V
1
±10
µA
15
pF
2.375
2.70
5.250
V
5.25
270 650
220
µA
150
780 950
720
µA
650
3
µA
70
dB
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