參數(shù)資料
型號： ADS7846
元件分類： 通用總線功能
英文描述： CMOS 8-Stage Presettable 8-Bit Binary Synchronous Down Counter 16-TSSOP -55 to 125
中文描述： 觸摸屏控制器
文件頁數(shù)： 3/23頁
文件大小： 520K
代理商： ADS7846
ADS7846
SBAS125H
3
www.ti.com
ANALOG INPUT
Full-Scale Input Span
Absolute Input Range
Positive Input-Negative Input
Positive Input
Negative Input
0
V
REF
V
V
V
pF
μ
A
–
0.2
–
0.2
+V
CC
+0.2
Capacitance
Leakage Current
SYSTEM PERFORMANCE
Resolution
No Missing Codes
Integral Linearity Error
Offset Error
Gain Error
Noise
Power-Supply Rejection
SAMPLING DYNAMICS
Conversion Time
Acquisition Time
Throughput Rate
Multiplexer Settling Time
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
SWITCH DRIVERS
On-Resistance
Y+, X+
Y
–
, X
–
Drive Current
(2)
REFERENCE OUTPUT
Internal Reference Voltage
Internal Reference Drift
Quiescent Current
REFERENCE INPUT
Range
Input Impedance
25
0.1
12
Bits
Bits
LSB
(1)
LSB
LSB
μ
Vrms
dB
11
±
2
±
6
±
4
External V
Including Internal V
REF
70
70
12
CLK Cycles
CLK Cycles
kHz
ns
ns
ps
dB
3
125
500
30
100
100
V
IN
= 2.5Vp-p at 50kHz
5
6
mA
Duration 100ms
50
2.45
2.50
15
500
2.55
V
ppm/
°
C
μ
A
1.0
+V
CC
V
SER/DFR = 0, PD1 = 0,
Internal Reference Off
Internal Reference On
1
G
250
BATTERY MONITOR
Input Voltage Range
Input Impedance
Sampling Battery
Battery Monitor Off
Accuracy
0.5
6.0
V
10
1
k
G
%
%
External V
= 2.5V
Internal Reference
–
2
–
3
+2
+3
TEMPERATURE MEASUREMENT
Temperature Range
Resolution
–
40
+85
°
C
°
C
°
C
°
C
°
C
Differential Method
(3)
TEMP0
(4)
Differential Method
(3)
TEMP0
(4)
1.6
0.3
±
2
±
3
Accuracy
DIGITAL INPUT/OUTPUT
Logic Family
Logic Levels, Except
PENIRQ
V
IH
V
IL
V
OH
V
PENIRQ
V
Data Format
POWER-SUPPLY REQUIREMENTS
+V
CC(5)
CMOS
| I
IH
|
≤
+5
μ
A
| I
IL
|
≤
+5
μ
A
I
OH
=
–
250
μ
A
I
OL
= 250
μ
A
+V
CC
0.7
–
0.3
+V
CC
0.8
+V
CC
+ 0.3
+0.8
V
V
V
0.4
T
A
= 0
°
C to +85
°
C, 50k
Pull-Up
0.8
V
Straight Binary
Specified Performance
Operating Range
Internal Reference Off
Internal Reference On
f
= 12.5kHz
Power-Down Mode with
CS = DCLK = DIN = +V
CC
+V
CC
= +2.7V
2.7
2.2
3.6
5.25
650
V
V
μ
A
μ
A
μ
A
μ
A
Quiescent Current
280
780
220
3
Power Dissipation
TEMPERATURE RANGE
Specified Performance
1.8
mW
–
40
+85
°
C
NOTES: (1) LSB means least significant bit. With V
equal to +2.5V, one LSB is 610
μ
V. (2) Ensured by design, but not tested. Exceeding 50mA source current
may result in device degradation. (3) Difference between TEMP0 and TEMP1 measurement. No calibration necessary. (4) Temperature drift is
–
2.1mV/
°
C.
(5) ADS7846 operates down to 2.2V.
ADS7846E
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ELECTRICAL CHARACTERISTICS
At T
A
=
–
40
°
C to +85
°
C, +V
CC
= +2.7V, V
REF
= 2.5V internal voltage, f
SAMPLE
= 125kHz, f
CLK
= 16
f
SAMPLE
= 2MHz, 12-bit mode, and digital inputs = GND or +V
CC
,
unless otherwise noted.
相關(guān)PDF資料
PDF描述
ADS7846E CMOS 8-Stage Presettable 8-Bit Binary Synchronous Down Counter 16-TSSOP -55 to 125
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7846AE 制造商:Rochester Electronics LLC 功能描述:- Bulk
ADS7846AN 制造商:Rochester Electronics LLC 功能描述:- Bulk
ADS7846E 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-wire Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
ADS7846E 制造商:Texas Instruments 功能描述:IC 4-WIRE TOUCH SCRN CONT 16QSOP 制造商:Texas Instruments 功能描述:IC, 4-WIRE TOUCH SCRN CONT 16QSOP
ADS7846E 制造商:Texas Instruments 功能描述:IC's
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