Oscillator buffers shrink space and power

Eight new high gain output oscillator buffers enable designers to save space while also minimising jitter and power consumption.

Texas Instruments has released eight new high gain output oscillator buffers.

Measuring just 2 x 2 x 0.55mm, the new oscillator products enable designers to save space while also minimising jitter and power consumption.

The devices provide differential signal output in low-voltage differential signalling (LVDS) or low-voltage pseudo emitter-coupled logic (LVPECL) and clock signal amplification for telecommunications switching equipment.

The SN65LVDS16/17/18/19 and SN65LVP16/17/18/19 are high-frequency oscillator gain stage buffers supporting LVDS and LVPECL on the high gain outputs in 3.3 or 2.5V systems.

The devices afford oscillator designers their choice of rise times: 2Gbit/s (LVDS/LVP16 and LVDS/LVP17) and 1Gbit/s (LVDS/LVP18 and LVDS/LVP 19).

In addition, the family provides the option of both single-ended input on the LVDS/LVP16 and LVDS/LVP18 and fully differential inputs on the LVDS/LVP17 and LVDS/LVP19.

The LVDS/LVP16 and LVDS/LVP18 provide three gain control options from 300 to 860mV, allowing the designer to optimise the buffer based on system needs.

The new devices offer 3.3 and 2.5V operation, enabling designers to migrate seamlessly to 2.5V supply as system needs dictate.

Each device offers power savings when compared with the nearest competition, with power reductions ranging from 15 to 66%.

For example, the LVP18/19 each uses only 50mW - about one-third the power consumption of comparable devices.

The new devices join other TI oscillator products such as the CDCM1802/04.

These mixed-output low-voltage PECL and low-voltage transistor-to-transistor (LVTTL) devices provide timing module and voltage-controlled crystal oscillator designers integrated low-voltage PECL and LVTTL outputs in a 3 x 3 and 4 x 4mm package, respectively.

This is especially useful for designers who need a LVTTL feedback in their PLL module design.

The buffers also include multiple divider options, which are chosen through external select pins.

The devices are well-suited for communications applications.

The SN65LVDS16/17/18/19 and SN65LVP16/17/18/19 are available in volume from TI and its authorised distributors, packaged in an eight-pin, 2 x 2 x 0.55mm lead (Pb)-free small-outline no-lead package.

Suggested resale pricing in 1000-piece quantities is $2.55 each for the LVDS16/17/18/19 and $1.95 for the LVP16/17/18/19.

Samples are available for 24-hour delivery.

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