参数资料
型号: TDA8757AHL/21
厂商: NXP SEMICONDUCTORS
元件分类: ADC
英文描述: 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP144
封装: PLASTIC, HLQFP-144
文件页数: 3/37页
文件大小: 908K
代理商: TDA8757AHL/21
Philips Semiconductors
TDA8757A
Triple 8-bit ADC 205 Msps
Preliminary data
Rev. 01 — 22 March 2002
11 of 37
9397 750 09549
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
8.
Functional description
This triple high-speed 8-bit ADC is designed to convert RGB/YUV signals, coming
from an analog source, into digital data used by a LCD driver (pixel clock up to
205 MHz).
8.1 Analog video inputs
The RGB/YUV video inputs are externally AC coupled and are internally
DC polarized.
The synchronization signals are also used by the device for the internal PLL and the
gain calibration.
If the green video signal has composite sync (sync on green) it is possible to extract
this composite sync by connecting the green signal to pin INSOG (AC coupled). When
the sync pulse amplitude is below 300 mV, the I2C-bus bit ‘Slevel’ has to be set to
logic 1 (see Figure 5). The maximum amplitude for the sync pulse is 600 mV typical.
The composite sync is available at pin SOGO (TTL level compatible signal).
VCCO(PLL)
126
PLL output supply voltage
n.c.
127
not connected
DGND1
128
digital ground 1
OE
129
output enable; active LOW (when OE is HIGH, the outputs are
high-impedance)
PD
130
power-down control input (IC is in Power-down mode when
this pin is HIGH)
CLP
131
clamp pulse input (clamp active HIGH)
HSYNC
132
horizontal synchronization pulse input
INV
133
PLL clock output inverter control input (invert when HIGH)
CKEXT
134
external clock input
COAST
135
PLL coast control input
CKREF
136
PLL reference clock input
VCCD1
137
digital supply voltage 1
n.c.
138
not connected
AGNDPLL
139
PLL analog ground
CP
140
PLL lter input
CZ
141
PLL lter input
AGNDPLL
142
PLL analog ground
VCCA(PLL)
143
PLL analog supply voltage
n.c.
144
not connected
GNDDP
exposed die pad connection
Table 3:
Pin description…continued
Symbol
Pin
Description
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TDA8757HL 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Triple 8-bit ADC 170 Msps
TDA8758 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:YC 8-bit low-power analog-to-digital video interface
TDA8758G 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:YC 8-bit low-power analog-to-digital video interface
TDA8759HV/8/C1 功能描述:模数转换器 - ADC 3X8-BITS VIDEO ADC 110MSPS RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
TDA8759HV/8/C1,551 功能描述:模数转换器 - ADC 3X8-BITS VIDEO RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32