參數(shù)資料
型號(hào): TLC2324
廠商: Texas Instruments, Inc.
英文描述: Low-Voltage Low-Power Operational Amplifier(低壓低功耗運(yùn)放)
中文描述: 低電壓低功耗運(yùn)算放大器(低壓低功耗運(yùn)放)
文件頁(yè)數(shù): 24/33頁(yè)
文件大小: 472K
代理商: TLC2324
TLV2322, TLV2322Y, TLV2324, TLV2324Y
LinCMOS
LOW-VOLTAGE LOW-POWER
OPERATIONAL AMPLIFIERS
SLOS187 – FEBRUARY 1997
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
generally measured by monitoring the distortion level of the output while increasing the frequency of a sinusoidal
input signal until the maximum frequency is found above which the output contains significant distortion. The
full-peak response is defined as the maximum output frequency, without regard to distortion, above which full
peak-to-peak output swing cannot be maintained.
Because there is no industry-wide accepted value for significant distortion, the full-peak response is specified
in this data sheet and is measured using the circuit of Figure 35. The initial setup involves the use of a sinusoidal
input to determine the maximum peak-to-peak output of the device (the amplitude of the sinusoidal wave is
increased until clipping occurs). The sinusoidal wave is then replaced with a square wave of the same
amplitude. The frequency is then increased until the maximum peak-to-peak output can no longer be maintained
(Figure 39). A square wave is used to allow a more accurate determination of the point at which the maximum
peak-to-peak output is reached.
(d) f > BOM
(d) f = BOM
(d) BOM > f > 100 Hz
(a) f = 100 Hz
Figure 39. Full-Power-Response Output Signal
test time
Inadequate test time is a frequent problem, especially when testing CMOS devices in a high-volume,
short-test-time environment. Internal capacitances are inherently higher in CMOS than in bipolar and BiFET
devices and require longer test times than their bipolar and BiFET counterparts. The problem becomes more
pronounced with reduced supply levels and lower temperatures.
APPLICATION INFORMATION
single-supply operation
While the TLV232x performs well using dual-
power supplies (also called balanced or split
supplies), the design is optimized for single-
supply operation. This includes an input common-
mode voltage range that encompasses ground as
well as an output voltage range that pulls down to
ground. The supply voltage range extends down
to 2 V, thus allowing operation with supply levels
commonly available for TTL and HCMOS.
Many single-supply applications require that a
voltage be applied to one input to establish a
reference level that is above ground. This virtual
ground can be generated using two large
resistors, but a preferred technique is to use a
virtual-ground generator such as the TLE2426 (see Figure 40). The TLE2426 supplies an accurate voltage
equal to V
DD
/2, while consuming very little power and is suitable for supply voltages of greater than 4 V.
VO
VDD–VI
2
R2
R1
VDD
2
+
TLE2426
VO
VI
R1
R2
VDD
Figure 40. Inverting Amplifier With Voltage
Reference
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