- 您现在的位置：买卖IC网 > PDF目录98181 > TC826CBU 1-CH DUAL-SLOPE ADC, PQFP64 PDF资料下载
参数资料
| 型号： | TC826CBU |
| 元件分类： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PQFP64 |
| 封装： | PLASTIC, QFP-64 |
| 文件页数： | 4/18页 |
| 文件大小： | 348K |
| 代理商： | TC826CBU |
TC826
DS21477C-page 12
2005 Microchip Technology Inc.
4.11
Polarity Indication (POL-, Pin 60)
The TC826 converts and displays data for positive and
negative input signals. The POL LCD segment driver
(Pin 60) is active for negative signals.
4.12
Oscillator Operation
The TC826 external oscillator frequency, FOSC, is set
by resistor ROSC connected between pins 13 and 14.
The oscillator frequency versus resistance curve is
shown in Figure 4-5.
FIGURE 4-5:
OSCILLATOR
FREQUENCY VS. ROSC
FOSC is divided by 32 to provide an internal system
clock, FYSY. Each conversion requires 80 internal
clock cycles. The internal system clock is divided by 8
to provide the LCD backplane drive frequency. The dis-
play flash rate during an input out-of-range signal is set
by dividing FSYS by 320.
The internal oscillator may be bypassed by driving
OSC1 (Pin 13) with an external signal generator. OSC2
(Pin 14) should be left unconnected.
The oscillator should swing from VDD to VSS in single
supply operation (Figure 4-6). In dual supply operation,
the signal should swing from power supply ground to
VDD.
FIGURE 4-6:
EXTERNAL OSCILLATOR
CONNECTION
4.13
LCD Display Format
The input signal can be displayed in two formats
(Figure 4-7). The BAR/DOT input (Pin 61) selects the
format. The TC826 measurement cycle operates
identically for either mode.
FIGURE 4-7:
DISPLAY OPTION
FORMATS
20
18
16
14
12
10
8
6
4
2
0
50
40
30
20
10
0
2468 10 12 14 16 18 20
TA = 25°C
VDD to VSS = 9V
ROSC (X 100kΩ)
F
OSC
(kHz)
CONV
(CONV/SEC)
9V
8
TC826
12
13
OSC1
14
OSC2
0.1
μf
External
Oscillator
A. Single 9V Supply
TC826
B. Dual Supply
0.1
μf
13
Oscillator
Power
Supply
VDD 8
12
VSS
VDD = 5V
VSS = 5V
Bar 4
Off
Bar 3
Off
Bar 2
Off
On
Bar 1
Off
On
Bar 0
Bar 4
Bar 3
Bar 2
Bar 1
Bar 0
On
Off
On
1. Input = 0
A. BAR Mode
Off
On
Off
1. Input = 0
B. DOT Mode
2. Input = 5%
of Full Scale
2. Input = 5%
of Full Scale
相关PDF资料 |
PDF描述 |
|---|---|
| TC826CBU | 1-CH DUAL-SLOPE ADC, ACCESS, PQFP64 |
| TC83220-0006 | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
| TC83220-0009 | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
| TC83220-0019 | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
| TC83220-0020 | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC826-TB | 制造商:Thomas & Betts 功能描述:CABLE TIE MOUNT, NYLON 6.6, NATURAL; Mount Fixing Type:Screw; Mount Material:Nylon 6.6; Mount Color:Natural; Accessory Type:Mounting Base; For Use With:Cable Ties ;RoHS Compliant: Yes 制造商:Thomas & Betts 功能描述:Cable Accessories Two Direction Mounting Base Bulk |
| TC-827-SC | 制造商:Thomas & Betts 功能描述: |
| TC828-0 | 制造商:Thomas & Betts 功能描述:CABLE TIE MT .4X.9 2-DIR 8SCREW BLK |
| TC828A | 制造商:TELCOM 制造商全称:TelCom Semiconductor, Inc 功能描述:Switched Capacitor Voltage Converter |
| TC828AECT | 制造商:TELCOM 制造商全称:TelCom Semiconductor, Inc 功能描述:Switched Capacitor Voltage Converter |
发布紧急采购，3分钟左右您将得到回复。