參數(shù)資料
型號： 5962-9555001NXDR
廠商： TEXAS INSTRUMENTS INC
元件分類： 比較器
英文描述： QUAD COMPARATOR, 10000 uV OFFSET-MAX, 2500 ns RESPONSE TIME, PDSO14
封裝： GREEN, PLASTIC, SOIC-14
文件頁數(shù)： 28/29頁
文件大?。?/td> 859K
代理商： 5962-9555001NXDR
TLC139, TLC339, TLC339Q
LinCMOS MICROPOWER QUAD COMPARATORS
8
WWW.TI.COM
PARAMETER MEASUREMENT INFORMATION
A close approximation of the input offset voltage can be obtained by using a binary search method to vary the
differential input voltage while monitoring the output state. When the applied input voltage differential is equal but
opposite in polarity to the input offset voltage, the output changes state.
Figure 2 illustrates a practical circuit for direct dc measurement of input offset voltage that does not bias the
comparator into the linear region. The circuit consists of a switching mode servo loop in which U1A generates a
triangular waveform of approximately 20-mV amplitude. U1B acts as a buffer, with C2 and R4 removing any residual
dc offset. The signal is then applied to the inverting input of the comparator under test, while the noninverting input
is driven by the output of the integrator formed by U1C through the voltage divider formed by R9 and R10. The loop
reaches a stable operating point when the output of the comparator under test has a duty cycle of exactly 50%, which
can only occur when the incoming triangle wave is sliced symmetrically or when the voltage at the noninverting input
exactly equals the input offset voltage.
Voltage divider R9 and R10 provides a step-up of the input offset voltage by a factor of 100 to make measurement
easier. The values of R5, R8, R9, and R10 can significantly influence the accuracy of the reading; therefore, it is
suggested that their tolerance level be 1% or lower.
+
+
+
Dut
Buffer
R1
240 k
R2
10 k
R3
100 k
R4
47 k
R5
1.8 k
, 1%
R3
5.1 k
R7
1 M
R8
1.8 k
, 1%
R9
10 k
, 1%
R10
100
, 1%
C1
0.1
F
C2
1
F
C3 0.68
F
C4
0.1
F
U1C
1/4 TLC274CN
U1A
1/4 TLC274CN
Triangle
Generator
U1B
1/4 TLC274CN
Integrator
VIO
(X100)
VDD
Figure 2. Circuit for Input Offset Voltage Measurement
Measuring the extremely low values of input current requires isolation from all other sources of leakage current and
compensation for the leakage of the test socket and board. With a good picoammeter, the socket and board leakage
can be measured with no device in the socket. Subsequently, this open socket leakage value can be subtracted from
the measurement obtained, with a device in the socket to obtain the actual input current of the device.
相關PDF資料
PDF描述
5962-8771002PX DUAL OP-AMP, 4000 uV OFFSET-MAX, 1 MHz BAND WIDTH, CDIP8
5962-8771002GX DUAL OP-AMP, 4000 uV OFFSET-MAX, 1 MHz BAND WIDTH, MBCY8
5962-8771001PX DUAL OP-AMP, 7000 uV OFFSET-MAX, 1 MHz BAND WIDTH, CDIP8
5962-8771001GX DUAL OP-AMP, 7000 uV OFFSET-MAX, 1 MHz BAND WIDTH, MBCY8
5962-8771002VGA DUAL OP-AMP, 4000 uV OFFSET-MAX, 1 MHz BAND WIDTH, MBCY8
相關代理商/技術參數(shù)
參數(shù)描述
5962-9555101NXD 功能描述:校驗器 IC Dual MicroPwr Lin CMOS Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
5962-9555101NXDR 制造商:Texas Instruments 功能描述:Comparator Dual 16V 8-Pin SOIC T/R
5962-9555101QPA 制造商:Texas Instruments 功能描述:Comparator Dual 16V 8-Pin CDIP Tube 制造商:Texas Instruments 功能描述:5962-9555101QPA, DUAL COMPARATOR - Rail/Tube
5962-9555201NXD 功能描述:運算放大器 - 運放 R-R Low Noise Adv LinCMOS Dual Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
5962-9555201NXDR 制造商:Texas Instruments 功能描述:OP Amp Dual GP R-R O/P 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:OP AMP DUAL GP R-R O/P 8V/16V 8SOIC - Tape and Reel
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