參數(shù)資料
型號： WM9712LEFV
廠商： Wolfson Microelectronics
元件分類： Codec
英文描述： AC97 Audio and Touchpanel CODEC
中文描述： AC97音頻編解碼器和觸摸屏
文件頁數(shù)： 9/78頁
文件大?。?/td> 689K
代理商： WM9712LEFV
Production Data
WM9712L
w
PD Rev 4.0 December 2003
9
TOUCHPANEL AND AUXILIARY ADC
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD = TPVDD = 3.3V, T
A
= +25
o
C, MCLK = 24.576 MHz, unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
Input Pins X+, X-, Y+, Y-, WIPER/AUX4, COMP1/AUX1, COMP2/AUX2 and BMON/AUX3
Input Voltage
Input leakage current
AUX pin not selected as
AUX ADC input
ADC Resolution
Differential Non-Linearity Error
DNL
Integral Non-Linearity Error
INL
Offset Error
Gain Error
Power Supply Rejection
PSRR
Throughput Rate
DEL = 1111
(zero settling time)
Settling Time (programmable)
MCLK = 24.576MHz
Conversion Time
Note: touch pressure
measurements require
two conversions
Switch matrix resistance
Programmable Pull-up resistor
R
PU
RPU = 000001
Pen down detector threshold
PIL = 1
Pressure measurement current
I
P
PIL = 0
BMON/AUX3 (pin 31 only)
AVDD = 3.3V
Input Range
AVDD = 1.8V
Scaling
during measurement
Input Resistance (Note 1)
average over time
MIN
TYP
MAX
UNIT
AGND
AVDD
V
nA
<10
12
bits
LSB
LSB
LSB
LSB
dB
kHz
±
0.25
50
±
1
±
2
±
4
±
6
48
0
6
ms
μ
s
20.8
12
63
k
V
μ
A
55
70
VDD/2
400
200
AGND
AGND
-3%
5
V
V
k
3.3
+3%
1/3
30
30 /
duty cycle
Note:
1. Current only flows into pin 31 during a measurement. At all other times, BMON/AUX3 is effectively an open circuit.
COMPARATORS
Test Conditions
AVDD = 3.3V, T
A
= +25
o
C, unless otherwise stated.
PARAMETER
COMP1/AUX1 and COMP2/AUX2 (pins 29, 30)
Input Voltage
Input leakage current
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
AGND
AVDD
V
nA
pin not selected as AUX
ADC input
<10
Comparator Input Offset
(COMP1, COMP2 only)
COMP2 delay (COMP2 only)
-50
+50
mV
24.576MHz crystal
0
10.9
s
相關(guān)PDF資料
PDF描述
WM9712LSEFL AC97 Audio and Touchpanel CODEC
WM9712LSEFT AC97 Audio and Touchpanel CODEC
WM9712LSEFV AC97 Audio and Touchpanel CODEC
WME128K8-XXX 128Kx8 CMOS MONOLITHIC EEPROM, SMD 5962-96796
WME128K8 128Kx8 CMOS Monolithic EEPROM(128Kx8 CMOS單片EEPROM)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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WM9712LGEFL/V 功能描述:接口—CODEC Stereo AC’97 CODEC T/P Interface RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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