FM25640-GTR DataSheet
DATASHEET
FM25640-GTR 描述
operated synchronously from the output of Q11 During the transfer function test Q6 and Q7 are switched on continu- ously by turning off Q11 R42 and R45 maintain the gates of the FET switches at zero gate to source voltage for maxi- mum conductance during their on cycle Since the sources of these switches are at the common mode input voltage of the device under test these resistors are connected to the output of the common mode driver amplifier A8
FM25640-GTR 特点
The FM25640-GTR offers superior dynamic performance with a 130MHz small-signal bandwidth, 350V/µs slew rate and 4.6ns rise/fall times (2Vpp). The combination of low quiescent power, high output drive current, and high-speed performance make the FM25640-GTR a great choice for many portable and battery- powered personal communication and computing systems.
FM25640-GTR 应用
The MT3x7xB is a family of high performance DTMF receivers which decode all 16 tone pairs into a 4-bit binary code. These devices incorporate an AGC for wide dynamic range and are suitable for end-to-end signalling. The MT3x70B provides an early steering (ESt) logic output to indicate the detection of a DTMF signal and requires external software guard time to validate the DTMF digit. The MT3x71B, with preset internal guard times, uses a delay steering (DStD) logic output to indicate the detection of a valid DTMF digit. The 4-bit DTMF binary digit can be clocked out synchronously at the serial data (SD) output. The SD pin is multiplexed with call progress detector output. In the presence of supervisory tones, the call progress detector circuit indicates the cadence (i.e., envelope) of the tone burst. The cadence information can then be processed by an external microcontroller to identify specific call progress signals. The MT327xB and MT337xB can be used with a crystal or a ceramic resonator without additional components. A power-down option is provided for the MT317xB and MT337xB.