Datasheet 搜索 > 数模转换器 > TI（德州仪器） > ADS7843E/2K5G4 数据手册 > ADS7843E/2K5G4 数据手册 3/18 页
器件3D模型￥ 13.386
ADS7843E/2K5G4 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
数模转换器
封装:
SSOP-16
描述:
触摸屏控制器 TOUCH SCREEN CONTROLLER
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ADS7843E/2K5G4数据手册
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of 18 Go
若手册格式错乱，请下载阅览PDF原文件
ADS7843
3
SBAS090B
www.ti.com
PARAMETER CONDITIONS MIN TYP MAX UNITS
ANALOG INPUT
Full-Scale Input Span Positive Input – Negative Input 0 V
REF
V
Absolute Input Range Positive Input –0.2 +V
CC
+0.2 V
Negative Input –0.2 +0.2 V
Capacitance 25 pF
Leakage Current 0.1 µA
SYSTEM PERFORMANCE
Resolution 12 Bits
No Missing Codes 11 Bits
Integral Linearity Error ±2 LSB
(1)
Offset Error ±6LSB
Offset Error Match 0.1 1.0 LSB
Gain Error ±4LSB
Gain Error Match 0.1 1.0 LSB
Noise 30 µVrms
Power-Supply Rejection 70 dB
SAMPLING DYNAMICS
Conversion Time 12 Clk Cycles
Acquisition Time 3 Clk Cycles
Throughput Rate 125 kHz
Multiplexer Settling Time 500 ns
Aperture Delay 30 ns
Aperture Jitter 100 ps
Channel-to-Channel Isolation V
IN
= 2.5Vp-p at 50kHz 100 dB
SWITCH DRIVERS
On-Resistance
Y+, X+ 5 Ω
Y–, X– 6 Ω
REFERENCE INPUT
Range 1.0 +V
CC
V
Resistance CS = GND or +V
CC
5GΩ
Input Current 13 40 µA
f
SAMPLE
= 12.5kHz 2.5 µA
CS = +V
CC
0.001 3 µA
DIGITAL INPUT/OUTPUT
Logic Family CMOS
Logic Levels, Except PENIRQ
V
IH
| I
IH
| ≤ +5µA+V
CC
• 0.7 +V
CC
+0.3
V
IL
| I
IL
| ≤ +5µA –0.3 +0.8 V
V
OH
I
OH
= –250µA+V
CC
• 0.8 V
V
OL
I
OL
= 250µA 0.4 V
PENIRQ
V
OL
T
A
= 0°C to +85°C, 100kΩ Pull-Up 0.8 V
Data Format Straight Binary
POWER-SUPPLY REQUIREMENTS
+V
CC
Specified Performance 2.7 3.6 V
Quiescent Current 280 650 µA
f
SAMPLE
= 12.5kHz 220 µA
Shutdown Mode with 3 µA
DCLK = DIN = +V
CC
Power Dissipation +V
CC
= +2.7V 1.8 mW
TEMPERATURE RANGE
Specified Performance –40 +85 °C
ELECTRICAL CHARACTERISTICS
At T
A
= –40°C to +85°C, +V
CC
= +2.7V, V
REF
= +2.5V, f
SAMPLE
= 125kHz, f
CLK
= 16 • f
SAMPLE
= 2MHz, 12-bit mode, and digital inputs = GND or +V
CC
, unless otherwise
noted.
ADS7843E
NOTE: (1) LSB means Least Significant Bit. With V
REF
equal to +2.5V, 1LSB is 610µV.
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