NVA Series Voice Chip
● Flexible variety of key operating mode TTL mode selection
● Easy MCU one serial port control, user triggers in the master section MCU controlled voice playback and stop;
● A set of built-in PWM output can directly push 0.5W speakers;
● Flexible playback operation,can save voice space through combination, and can play up to 128 voice combinations(32 addresses of 8 pins);
● Built-in LVR self-reset circuit to ensure the normal operation of the IC;
● The peripheral circuit is simple, only need to adjust the capacitor;
● Operating current: no audio output-current 85uA (3V);
● Operating voltage range: 1.8V~5.5V;
● Quiescent current: 2uA;

Choose More Voice Chips For Your Projects

Part Number   Voltage range     Quiescent currentVoice LengthSampling RangeAudio OutputPackage model
NV010A   1.8V-5.5V                          2uA   10s(6K)     6K-16K      PWM   SOP/DIP
NV035A   1.8V-5.5V                          2uA   32s(6K)     6K-16K      PWM   SOP/DIP
NV065A   1.8V-5.5V                          2uA   65s(6K)     6K-16K      PWM   SOP/DIP
NV115A   1.8V-5.5V                          2uA  112s(6K)     6K-16K      PWM   DIP



● Working voltage: DC 1.8 ~ 5.5V

● Stand-by power consumption: <2uA

● Audio Output: PWM

● Interface: pulse counting, one-line/two-line serial port

● Volume: support 8 level volume adjustment function

● 128 segments of speech can be loaded

● support multiply segments playing simultaneously

● support customizing functions


● Interface: pulse counting, one-line/two-line serial port

● Size: 4.9 x 6.0 x 1.75 mm

● Capacity: 10S/35S/65S/87S/115S

● Voltage: DC 1.8 – 5.5 V

● Working Temperature: -20 to + 75 °C

Chips Package



● Recordable greetingi cards, telephone exchanges,  recording machine cores, security equipment, toys, etc.

The NVA series voice chip is a voice chip with stable performance. It does not need any peripheral circuits and can work normally in extremely harsh noise environments. It has a wide range of temperature and voltage resistance, and the normal working range is as wide as 1.8V~5.5V , making up for the poor anti-interference ability of voice chips currently on the market.

The NVA series voice chip has a set of PWM output ports, which can directly push 0.5w speakers, and the sound quality is clear. Built-in LVR reset, no need for external reset circuit. Built-in precise internal resistance frequency vibrator (maximum error is only +-1%), no external resistance is required. An obvious advantage of the NVA series voice chip is that the OTP programming program can be seamlessly connected with the MASK mask. Directly put into production MASK masks according to OTP samples to reduce costs, and customers do not need to confirm samples twice.

The NVA series voice chip has a variety of key trigger methods, and can output various forms of level signals, which can be set to change according to the rhythm of the voice. In addition, it supports one-line serial port control of the main control MCU, and can control multiple voice triggers arbitrarily.

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