![](http://datasheet.mmic.net.cn/Maxim-Integrated-Products/MXB7846EUE-T_datasheet_99093/MXB7846EUE-T_7.png)
Typical Operating Characteristics (continued)
(VDD = 2.7V, VREF = 2.5VEXTERNAL, fDCLK = 2MHz, fSAMPLE = 125kHz, CLOAD = 50pF, 0.1F capacitor at REF, TA = +25°C, unless
otherwise noted.)
MXB7846
2.375V to 5.25V, 4-Wire Touch-Screen Controller
with Internal Reference and Temperature Sensor
_______________________________________________________________________________________
7
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MXB7846
toc18
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(μ
A)
5.0
4.5
4.0
3.5
3.0
2.5
175
200
225
250
150
2.0
5.5
fSAMPLE = 12.5kHz
SUPPLY CURRENT vs. TEMPERATURE
MXB7846
toc19
TEMPERATURE (
°C)
SUPPLY
CURRENT
(μ
A)
65
50
-25
-10
5
20
35
255
260
265
270
275
280
285
290
250
-40
80
fSAMPLE = 125kHz
VDD = 2.7V
SUPPLY CURRENT vs. SAMPLE RATE
MXB7846
toc20
SAMPLE RATE (kHz)
SUPPLY
CURRENT
(μ
A)
100
75
50
25
125
150
175
200
225
250
100
0
125
VDD = 2.7V
VREF = 2.5V
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MXB7846
toc21
SUPPLY VOLTAGE (V)
SHUTDOWN
CURRENT
(nA)
4.7
4.2
3.7
3.2
100
150
200
250
300
50
2.7
5.2
DCLK = CS = VDD
SHUTDOWN CURRENT vs. TEMPERATURE
MXB7846
toc22
TEMPERATURE (
°C)
SHUTDOWN
CURRENT
(nA)
65
50
35
20
5
-10
-25
60
70
80
90
100
110
120
50
-40
80
DCLK = CS = VDD = 3V
MAXIMUM SAMPLE RATE
vs. SUPPLY VOLTAGE
MXB7846
toc23
SUPPLY VOLTAGE (V)
SAMPLE
RATE
(kHz)
5.0
4.5
4.0
3.5
3.0
2.5
10
100
1000
1
2.0
5.5