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| 型号： | TC9401CPD |
| 厂商： | Microchip Technology |
| 文件页数： | 7/28页 |
| 文件大小： | 545K |
| 描述： | IC V-FREQ/FREQ-V CONV 14DIP |
| 标准包装： | 30 |
| 类型： | 电压至频率和频率至电压 |
| 频率 - 最大： | 100kHz |
| 全量程： | ±40ppm/°C |
| 线性： | ±0.02% |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-PDIP |
| 包装： | 管件 |
| 其它名称： | 158-1141 158-1141-ND |
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?2007 Microchip Technology Inc.
DS21483D-page 7
TC9400/9401/9402
2.6 Pulse Freq Out
This output is an open-drain N-channel FET, which
provides a pulse waveform whose frequency is propor-
tional to the input voltage. This output requires a pull-
up resistor and interfaces directly with MOS, CMOS,
and TTL logic (see Figure2-1).
2.7 Output Common
The sources of both the FREQ/2 OUT and the PULSE
FREQ OUT are connected to this pin. An output level
swing from the drain voltage to ground, or to the V
SS
supply, may be obtained by connecting this pin to the
appropriate point.
2.8 Freq/2 Out
This output is an open-drain N-channel FET, which
provides a square-wave one-half the frequency of the
pulse frequency output. The FREQ/2 OUT output will
change state on the rising edge of PULSE FREQ OUT.
This output requires a pull-up resistor and interfaces
directly with MOS, CMOS, and TTL logic.
2.9 Threshold Detector Input
In the V/F mode, this input is connected to the AMPLI-
FIER OUT output (Pin 12) and triggers a 3祍 pulse
when the input voltage passes through its threshold. In
the F/V mode, the input frequency is applied to this
input.
The nominal threshold of the detector is half way
between the power supplies, or (V
DD
+ V
SS
)/2 ?00
mV. The TC9400s charge balancing V/F technique is
not dependent on a precision comparator threshold,
because the threshold only sets the lower limit of the op
amp output. The op amps peak-to-peak output swing,
which determines the frequency, is only influenced by
external capacitors and by V
REF
.
2.10 Amplifier Out
This pin is the output stage of the operational amplifier.
During V/F operation, a negative going ramp signal is
available at this pin. In the F/V mode, a voltage
proportional to the frequency input is generated.
FIGURE 2-1: Output Waveforms.
3ms
Typ.
1/f
F
OUT
F
OUT
/2
Amp Out
V
REF
0V
C
REF
C
INT
Note1: To adjust F
MIN
, set V
IN
= 10mV and adjust the 50k?offset for 10Hz output.
2: To adjust F
MAX
, set V
IN
= 10V and adjust R
IN
or V
REF
for 10kHz output.
3: To increase F
OUTMAX
to 100kHz, change C
REF
to 2pF and C
INT
to 75pF.
4: For high performance applications, use high stability components for R
IN
, C
REF
. V
REF
(metal film
resistors and glass capacitors). Also, separate output ground (Pin 9) from input ground (Pin 6).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC9401EJD | 功能描述:电压频率转换及频率电压转换 V/F Converter RoHS:否 制造商:Texas Instruments 全标度频率:4000 KHz 线性误差:+/- 1 % FSR 电源电压-最大: 电源电压-最小: 最大工作温度:+ 85 C 最小工作温度:- 25 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 封装:Tube |
| TC9402 | 制造商:TELCOM 制造商全称:TelCom Semiconductor, Inc 功能描述:VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS |
| TC9402CPD | 功能描述:电压频率转换及频率电压转换 V/F Converter RoHS:否 制造商:Texas Instruments 全标度频率:4000 KHz 线性误差:+/- 1 % FSR 电源电压-最大: 电源电压-最小: 最大工作温度:+ 85 C 最小工作温度:- 25 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 封装:Tube |
| TC9402CPD | 制造商:Microchip Technology Inc 功能描述:IC F/V-V/F CONVERTER |
| TC9402CPD | 制造商:Microchip Technology Inc 功能描述:V/F Converter |
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