{"id":6920,"date":"2026-06-22T02:06:33","date_gmt":"2026-06-22T02:06:33","guid":{"rendered":"https:\/\/materialparts.com\/tps7a8801rtjt\/"},"modified":"2026-06-22T02:06:33","modified_gmt":"2026-06-22T02:06:33","slug":"tps7a8801rtjt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tps7a8801rtjt\/","title":{"rendered":"TPS7A8801RTJT"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The TPS7A8801RTJT from Texas Instruments is an ultra-low-noise LDO regulator with 1A output, 0.8uVrms noise, and 1.4V to 6.5V input in a QFN-12 package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nUltra-Low-Noise LDO Linear Regulator<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n1.4 V to 6.5 V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\nAdjustable (0.8V to 5.0V)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n1 A<\/td>\n<\/tr>\n
\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n0.8 uVrms (10Hz to 100kHz, VOUT=1.8V)<\/td>\n<\/tr>\n
PSRRR<\/td>\n72 dB @ 1kHz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n120 mV @ 1A<\/td>\n<\/tr>\n
Accuracy<\/td>\n+\/-1% over line, load, temperature<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n1.3 mA (typical)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nQFN-12 (3.5 x 3.5 x 1.0 mm, RTJ suffix)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +125C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 0.8 uVrms ultra-low output noise<\/li>\n
  • 72 dB PSRR at 1 kHz<\/li>\n
  • 1A output current with 120 mV dropout<\/li>\n
  • +\/-1% output accuracy<\/li>\n
  • Adjustable output from 0.8V to 5.0V<\/li>\n
  • NR\/SS pin for soft-start and noise reduction<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • RF and PLL power supply<\/li>\n
    • High-speed ADC\/DAC reference<\/li>\n
    • Camera sensor power<\/li>\n
    • Test and measurement equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS7A8801RTJT from Texas Instruments is an ultra-low-noise LDO regulator with 1A output, 0.8uVrms noise, and 1.4V to 6.5V input in a QFN-12 package. Key Specifications Type Ultra-Low-Noise LDO Linear Regulator Input Voltage 1.4 V to 6.5 V Output Voltage Adjustable (0.8V to 5.0V) Output Current 1 A Output Noise 0.8 uVrms (10Hz […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-6920","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"Ultra-Low-Noise LDO, 1A, 0.8uVrms, 72dB PSRR, QFN-12","date_code":"","package_case":"QFN-12 (3.5 x 3.5 x 1.0 mm, exposed pad)","in_stock":2345,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps7a88.pdf","price":"$2.50 @ 1ku","product_introduction":"The TPS7A8801RTJT from Texas Instruments is an ultra-low-noise, high-PSRR LDO linear regulator designed for noise-sensitive applications such as RF transceivers, high-speed data converters, and precision analog circuits. The 0.8 uVrms output noise from 10 Hz to 100 kHz is among the lowest available, ensuring minimal phase noise contribution to VCOs and PLLs. The 72 dB PSRR at 1 kHz effectively rejects input supply ripple, reducing the need for pre-filtering. The 1A output current supports moderate-power loads including FPGA I\/O banks and processor cores. The 120 mV dropout voltage at 1A allows efficient regulation from low headroom supplies. The NR\/SS (Noise Reduction \/ Soft Start) pin connects an external capacitor that filters the internal bandgap reference noise and provides a controlled output voltage ramp. The QFN-12 package with exposed pad provides excellent thermal performance.","working_principle":"The TPS7A8801 uses a PMOS pass transistor in a source-follower (common-drain) configuration. The error amplifier compares the feedback voltage (FB pin) with an internal 0.8V bandgap reference, driving the PMOS gate to regulate the output. The ultra-low noise is achieved through three techniques: (1) a low-noise bandgap reference filtered by the external NR capacitor (the dominant noise source in most LDOs), (2) a low-noise error amplifier design with chopper stabilization or auto-zeroing, and (3) a carefully optimized output stage that minimizes flicker noise contribution. The 72 dB PSRR is primarily determined by the error amplifier's open-loop gain at low frequencies. At higher frequencies (>100 kHz), the PSRR rolls off as the amplifier bandwidth is exceeded, but the output capacitor's impedance helps maintain some rejection. The 120 mV dropout at 1A is set by the PMOS on-resistance (Ron = 120 mOhm). The soft-start function uses the NR capacitor to slowly ramp the reference voltage, limiting inrush current.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OUT<\/td>Output<\/td>Regulated output voltage<\/td><\/tr>
      2<\/td>OUT<\/td>Output<\/td>Regulated output voltage<\/td><\/tr>
      3<\/td>NR\/SS<\/td>Analog<\/td>Noise reduction capacitor \/ Soft-start<\/td><\/tr>
      4<\/td>FB<\/td>Input<\/td>Feedback voltage (0.8V reference)<\/td><\/tr>
      5<\/td>EN<\/td>Input<\/td>Enable (HIGH=on)<\/td><\/tr>
      6<\/td>PG<\/td>Output<\/td>Power good indicator (open-drain)<\/td><\/tr>
      7<\/td>BIAS<\/td>Power<\/td>Bias supply for internal circuitry<\/td><\/tr>
      8<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      9<\/td>IN<\/td>Power<\/td>Input supply (1.4-6.5V)<\/td><\/tr>
      10<\/td>IN<\/td>Power<\/td>Input supply (1.4-6.5V)<\/td><\/tr>
      11-12<\/td>GND\/Pad<\/td>Power<\/td>Ground \/ Exposed thermal pad<\/td><\/tr><\/table>","application_scenarios":"
      • RF transceiver 1.8V VCO supply with 0.8uVrms noise for minimal phase noise<\/li>
      • 16-bit ADC reference buffer LDO with 72dB PSRR from switching pre-regulator<\/li>
      • High-speed SERDES PHY power with 0.8V output at 1A from 1.2V input<\/li>
      • Precision instrument analog rail with NR capacitor for <1uVrms noise floor<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS7A8800RTJT<\/td>QFN-12<\/td>Dual channel version<\/td><\/tr>
        TI<\/td>TPS7A7001RGW<\/td>QFN-20<\/td>3A, higher current, similar noise<\/td><\/tr>
        ADI<\/td>LT3042EMSE<\/td>MSOP-10<\/td>0.8uVrms, 200mA, similar noise class<\/td><\/tr>
        ADI<\/td>LT3045IVSE<\/td>MSOP-10<\/td>0.8uVrms, 500mA<\/td><\/tr>
        TI<\/td>TPS7A4700RGWR<\/td>QFN-20<\/td>1A, 3.8uVrms, lower cost<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6920"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6920\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6920"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6920"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}