NCN5193 HART Modem Description The NCN5193 is a singlechip, CMOS modem for use in highway addressable remote transducer (HART) field instruments and masters. The modem and a few external passive components provide all of the functions needed to satisfy HART physical layer requirements www.onsemi.com including modulation, demodulation, receive filtering, carrier detect, and transmitsignal shaping. In addition, the NCN5193 also has an MARKING integrated DAC for low-BOM current loop slave transmitter DIAGRAM implementation. The NCN5193 uses phase continuous frequency shift keying (FSK) at 1200 bits per second. To conserve power the receive circuits are 1 disabled during transmit operations and vice versa. This provides the NCN halfduplex operation used in HART communications. 1 32 5193 AWLYYWW Features QFN32 CASE 485EK Singlechip, Halfduplex 1200 Bits per Second FSK Modem Bell 202 Shift Frequencies of 1200 Hz and 2200 Hz NCN5193 = Specific Device Code 1.8 V 3.5 V Power Supply A = Assembly Location Transmitsignal Wave Shaping WL = Wafer Lot YY = Year Receive Bandpass Filter WW = Work Week Low Power: Optimal for Intrinsically Safe Applications = PbFree Package Compatible with 1.8 V or 3.3 V Microcontroller (Note: Microdot may be in either location) Internal Oscillator Requires 460.8 kHz, 920 kHz, 1.84 MHz or 3.68 MHz Crystal or Ceramic Resonator ORDERING INFORMATION SPI Communication See detailed ordering and shipping information in the package Integrated 17 bit Sigma-Delta DAC dimensions section on page 13 of this data sheet. Meets HART Physical Layer Requirements Industrial Temperature Range of 40C to +85C Available in 32pin NQFP Package These are PbFree Devices Applications HART Multiplexers HART Modem Interfaces 4 20 mA Loop Powered Transmitters Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: July, 2018 Rev. 6 NCN5193/DNCN5193 BLOCK DIAGRAM VDD VDDA RxAFI RxAF RxAP Demodulator RxD FSK IN Logic RxAN Rx Comp Filter Amplifier AREF Carrier Detect CD Counter CDREF Carrier Comp DEMODULATOR Numeric TxA Sine Controlled TxD FSK OUT Shaper Oscillator MODULATOR RTS NCN5193 JUMP CS DAC SCLK SPI Registers DAC DATA DACREF TEST1 TEST2 VPOR CLK1 POR BIAS Crystal KICK Oscillator CLK2 RESET VSS CBIAS MODE XOUT XIN Figure 1. Block Diagram NCN5193 ELECTRICAL SPECIFICATIONS Table 1. ABSOLUTE MAXIMUM RATINGS (Note 1) Symbol Parameter Min Max Units T Ambient Temperature 40 +85 C A T Storage Temperature 55 +150 C S T Junction Temperature 40 +85 C J V Supply Voltage 0.3 4.0 V DD V , V DC Input, Output 0.3 V + 0.3 V IN OUT DD Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. CMOS devices are damaged by highenergy electrostatic discharge. Devices must be stored in conductive foam or with all pins shunted. Precautions should be taken to avoid application of voltages higher than the maximum rating. Stresses above absolute maximum ratings may result in damage to the device. www.onsemi.com 2