|Category||Analog & Mixed-Signal Processing => Amplifiers|
|Description||Advanced Lincmose Low-noise Chopper-stabilized Operational Amplifiers|
|Company||Texas Instruments, Inc.|
|Datasheet||Download TLC2654AM-14D datasheet
|TLC2654, TLC2654A Advanced LinCMOSTM LOW-NOISE CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS
Input Noise Voltage 0.5 µV (Peak-to-Peak) Typ, 1.5 µV (Peak-to-Peak) Typ, Hz 47 nV/Hz Typ, Hz 13 nV/Hz Typ, = 1 kHz High Chopping Frequency. 10 kHz Typ No Clock Noise Below 10 kHz No Intermodulation Error Below 5 kHz Low Input Offset Voltage 10 µV Max (TLC2654A) Excellent Offset Voltage Stability With Temperature. 0.05 µV/°C Max AVD. 135 dB Min (TLC2654A) CMRR. 110 dB Min (TLC2654A) kSVR. 120 dB Min (TLC2654A) Single-Supply Operation Common-Mode Input Voltage Range Includes the Negative Rail No Noise Degradation With External Capacitors Connected to VDD Available in Q-Temp Automotive HighRel Automotive Applications Configuration Control/Print Support Qualification to Automotive Standardsdescription
14 The TLC2654 and TLC2654A are low-noise chopper-stabilized operational amplifiers using the Advanced LinCMOSTM process. Combining this process with chopper-stabilization circuitry makes excellent dc precision possible. In addition, circuit techniques are added that give the TLC2654 and TLC2654A noise performance No internal connection unsurpassed by similar devices. Chopper-stabilization techniques provide for extremely high dc precision by continuously nulling input offset voltage even during variations in temperature, time, common-mode voltage, and power-supply voltage. The high chopping frequency of the TLC2654 and TLC2654A (see Figure 1) provides excellent noise performance in a frequency spectrum from near to 10 kHz. In addition, intermodulation or aliasing error is eliminated from frequencies to 5 kHz. 8
On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
This high dc precision and low noise, coupled with the extremely high input impedance of the CMOS input stage, makes the TLC2654 and TLC2654A ideal choices for a broad range of applications such as low-level, low-frequency thermocouple amplifiers and strain gauges and wide-bandwidth and subsonic circuits. For applications requiring even greater dc precision, use the or TLC2652A devices, which have a chopping frequency of 450 Hz.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Advanced LinCMOS is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
The TLC2654 and TLC2654A common-mode input voltage range includes the negative rail, thereby providing superior performance in either single-supply or split-supply applications, even at power supply voltage levels as low 2.3 V. Two external capacitors are required to operate the device; however, the on-chip chopper-control circuitry is transparent to the user. On devices in the 14-pin and 20-pin packages, the control circuitry is accessible, allowing the user the option of controlling the clock frequency with an external frequency source. In addition, the clock threshold of the TLC2554 and TLC2654A requires no level shifting when used in the single-supply configuration with a normal CMOS or TTL clock input. Innovative circuit techniques used on the TLC2654 and TLC2654A allow exceptionally fast overload recovery time. An output clamp pin is available to reduce the recovery time even further.
Figure 1 The device inputs and outputs are designed to withstand 100-mA surge currents without sustaining latch-up. In addition, the TLC2654 and TLC2654A incorporate internal ESD-protection circuits that prevent functional failures at voltages V as tested under MIL-STD-883C, Method 3015; however, exercise care in handling these devices, as exposure to ESD may result in degradation of the device parametric performance. The C-suffix devices are characterized for operation from to 70°C. The I-suffix devices are characterized for operation from to 85°C. The Q-suffix devices are characterized for operation from to 125°C. The M-suffix devices are characterized for operation over the full military temperature range 55°C to125°C.
PACKAGED DEVICES TA VIOmax 25°C 8 PIN SMALL OUTLINE (D) TLC2654AM-8D TLC2654M-8D CERAMIC DIP (JG) TLC2654AMJG TLC2654MJG PLASTIC DIP (P) TLC2654AMP TLC2654MP SMALL OUTLINE (D) TLC2654M-14D 14 PIN CERAMIC DIP (J) TLC2654AMJ TLC2654MJ PLASTIC DIP (N) TLC2654MN 20 PIN CERAMIC DIP (FK) TLC2654AMFK TLC2654MFK
The 8-pin and 14-pin D packages are available taped and reeled. Add R suffix to device type (e.g., TLC2654AC-8DR).
VDD + 11 Clamp Circuit + IN Null A 1 CXB B 2 CXA 8 C RETURN CompensationBiasing Circuit External Components + Main CIC 9 10 CLAMP OUT
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