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参数资料
| 型号： | TLC32046IFNR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQCC28 |
| 封装： | PLASTIC, CC-28 |
| 文件页数： | 33/56页 |
| 文件大小： | 274K |
| 代理商： | TLC32046IFNR |
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4–1
4 Parameter Measurement Information
Rfb = 4R for D6 = 0, and D7 = 1
Rfb = 2R for D6 = 1 and D7 = 0
D6 = 0 and D7 = 0
Rfb = R for D6 = 1 and D7 = 1
To Multiplexer
Rfb
+
–
IN –
or
AUX IN –
IN +
or
AUX IN +
R
–
+
Rfb
Figure 4–1. IN + and IN – Gain Control Circuitry
Table 4–1. Gain Control Table (Analog Input Signal Required for
Full-Scale Bipolar A/D Conversion Twos Complement)
INPUT
CONTROL REGISTER BITS
ANALOG
A/D CONVERSION
CONFIGURATIONS
D6
D7
ANALOG
INPUT§
RESULT
1
VID = ± 6V
±full scale
Differential configuration
Al
i
t
IN
0
VID = ± 6 V
±full scale
Analog input = IN + – IN –
= AUX IN + – AUX IN –
1
0
VID = ± 3 V
±full scale
= AUX IN + – AUX IN –
0
1
VID = ± 1.5 V
±full scale
1
VI = ± 3V
±half scale
Single-ended configuration
Analog input
IN +
ANLG GND
0
VI = ± 3 V
±half scale
Analog input = IN + – ANLG GND
= AUX IN + –ANLG GND
1
0
VI = ± 3 V
±full scale
= AUX IN + ANLG GND
0
1
VI = ± 1.5 V
±full scale
VCC+ = 5 V, VCC– = –5 V, VDD = 5 V
VID = Differential Input Voltage, VI = Input voltage referenced to ground with IN– or AUX IN– connected to GND.
§ In this example, Vref is assumed to be 3 V. In order to minimize distortion, it is recommended that the analog input not
exceed 0.1 dB below full scale.
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相关代理商/技术参数 |
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| TLC32046IN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TLC32046M | 制造商:TI 制造商全称:Texas Instruments 功能描述:Wide-Band Analog Interface Circuit |
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