SPPDM-01

SPPDM-01 DSP Solutions with Analog Input/Output Description Design engineers now have an off-the-shelf precision, dual channel hardware solution for development of digital FIR filters that can be used in production subassemblies. Designers can generate FIR filter characteristics in a MatLabTM V5.3 or V6.0 environment and directly load standard or custom coefficient sets into the SPPDM-01 platform via an RS232 interface located on the users field programmable subassembly or from the SPPDB-01 development board. By utilizing the SPPDF-01 hardware with the enclosed MatLab GUI, generated coefficients are loaded directly into the removable SPPDM-01 platform for insertion into finished EOEM products. This unique capability minimizes product development and manufacturing cycle times while providing precise unit-to-unit product matching in a small 2” x 2” footprint that can be reconfigured or upgraded in the field. SPPDM-01 FIR filter platforms operates over a 100 Hz to 20 kHz audio frequency range. Each channel can be configured to provide up to 9-bits of filter frequency programmability per channel. This dual channel DSP design solution contains anti-alias and reconstruction filters along with ADC’s and DAC’s offering low noise and distortion signal processing with THD approaching –100 dB. Sampling at 48 kHz the fixed point DSP utilizes 32-bit math to achieve 24-bits of precision. Features/ Benefits: • Compact 2” x 2” dual channel design combined with large program memory (256 k EE-Prom) and 4-Mbits of flash memory optimizes DSP processing power in minimal board space. • SPPDB-01 development hardware offers rapid set-up, programming and performance evaluation, shortening the product development cycle while insuring high precision field programmable installation. • Field programmability of coefficient sets, analog I/O and storage for 100’s of application specific FIR filters provide designers with unmatched design, implementation and field upgrade flexibility. SPPDM-01 Platform A DC / D A C A n alog I/ O + _ Dual Channel, Differential Input FIR Filter Platform DS P D i gi t a l F ilte rs 10 w i r e d i gi t a l i nput b us P r ogr a m me mo r y EE - P ro m An a lo g F ilte r s Conv ert e r s ∑∆ A/D + _ ∑∆ A/D Di gi t a l Si gna l P ro c es so r Fl a s h me m o r y (c o e ffic i e n ts ) ∑∆ D /A ∑∆ D /A 3 w ir e d igi t a l out pu t b us SPPDM-01 Block diagram Applications • Brick-Wall; High-Pass, Low-Pass, Band-Pass, Band-Reject and Multi-Rate filters with Linear Phase and Signal Generators for Data Acquisition Systems. • Speech analysis, research, pathology • Sound and vibration testing OTHER AVAILABLE PLATFORM PRODUCTS SPP-01: Plug and play hardware/evaluation board, programmable with turnkey or customer generated algorithms. SPPDB-01: Development Board, for the SPP-01 family of products. May also be used as a mounting assembly. SPPDS-01: Development Suite for all SPP platform products. Requires TI’s Code Composer StudioTM. SPPDF-01: Development Suite for SPPDM-01 FIR filter products. Requires MatLabTM V5.3 or V6.0. 1 25 Locust St., Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX:978/521-1839 e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com SPPDM-01 DSP Solutions with Analog Input/Output Typical Program Selection Port Protocol Data Format • Logic “0” • Logic “1” MSB 27 D7 0 0 0 0 0 0 0 0 1 --26 D6 0 0 0 0 0 0 0 1 1 Dual Channel, Differential Input FIR Filter Platform 8 - Bit Programming Table --25 D5 0 0 0 0 0 0 1 1 1 --24 D4 0 0 0 0 0 1 1 1 1 --23 D3 0 0 0 0 1 1 1 1 1 --22 D2 0 0 0 1 1 1 1 1 1 --21 D1 0 0 1 1 1 1 1 1 1 LSB 20 D0 0 1 1 1 1 1 1 1 1 Bit Weight Program address 1 2 4 8 16 32 64 128 256 0VDC Min – 2VDC Max 3.5VDC Min – 5Vdc Max Bit Weighting (Binary Coded) D0 LSB D7 or D8 MSB Program Selection: 8-Bit: 256 filters with different FIR algorithms on each channel 9-Bit: 512 filters with the same FIR algorithm on each channel. 1. The program selection data word bus consists of D0 to D7 for 8 - bit programming. 2. The channel selection bit is D8. For D8, Channel 1 is “0” and Channel 2 is “1”. 9 - Bit Programming Table MSB --27 D7 0 0 0 0 0 0 0 0 1 1 --26 D6 0 0 0 0 0 0 0 1 1 1 --25 D5 0 0 0 0 0 0 1 1 1 1 --24 D4 0 0 0 0 0 1 1 1 1 1 --23 D3 0 0 0 0 1 1 1 1 1 1 --22 D2 0 0 0 1 1 1 1 1 1 1 --21 D1 0 0 1 1 1 1 1 1 1 1 LSB Bit Weight Program address 1 2 4 8 16 32 64 128 256 512 28 D8 0 0 0 0 0 0 0 0 0 1 20 D0 0 1 1 1 1 1 1 1 1 1 1. The program selection data word bus consists of D0 to D8 for 9 - bit programming. 2. The channel selection bit is D9. For D9, Channel 1 is “0” and Channel 2 is “1”. 2 25 Locust St., Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX:978/521-1839 e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com SPPDM-01 DSP Solutions with Analog Input/Output Performance Specifications Available bandwidth Bandwidth Frequency Accuracy Amplitude Accuracy at unity gain. Total Broad Band Noise (Ref to input 7 VRMS) Dual Channel, Differential Input FIR Filter Platform Specifications (@25°C and Vs = ±15 Vdc) Analog Input Characteristics Maximum Input Impedance Input voltage DC to 20 kHz 100 Hz to 20 kHz < ±0.05 % < ±0.1 dB 1.0 MΩ ±10 V peak < -96dB Max