Datasheet AD7891 (Analog Devices) - 6

AD7891 ORDERING GUIDE Relative Temperature Model Input Range Sample Rate Accuracy Range Package Option1
AD7891ACHIPS-1 DIE AD7891ACHIPS-2 DIE AD7891AS-1 ±5 V or ±10 V 454 kSPS ±1 LSB –40∞C to +85∞C S-44 AD7891ASZ-12 ±5 V or ±10 V 454 kSPS ±1 LSB –40∞C to +85∞C S-44 AD7891AP-1 ±5 V or ±10 V 454 kSPS ±1 LSB –40∞C to +85∞C P-44A AD7891AP-1REEL ±5 V or ±10 V 454 kSPS ±1 LSB –40∞C to +85∞C P-44A AD7891BS-1 ±5 V or ±10 V 454 kSPS ±0.75 LSB –40∞C to +85∞C S-44 AD7891BP-1 ±5 V or ±10 V 454 kSPS ±0.75 LSB –40∞C to +85∞C P-44A AD7891BP-1REEL ±5 V or ±10 V 454 kSPS ±0.75 LSB –40∞C to +85∞C P-44A AD7891YS-1 ±5 V or ±10 V 454 kSPS ±1 LSB –55∞C to +105∞C S-44 AD7891YS-1REEL ±5 V or ±10 V 454 kSPS ±1 LSB –55∞C to +105∞C S-44 AD7891YP-1 ±5 V or ±10 V 454 kSPS ±1 LSB –55∞C to +105∞C P-44A AD7891YP-1REEL ±5 V or ±10 V 454 kSPS ±1 LSB –55∞C to +105∞C P-44A AD7891AS-2 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±1 LSB –40∞C to +85∞C S-44 AD7891ASZ-22 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±1 LSB –40∞C to +85∞C S-44 AD7891AP-2 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±1 LSB –40∞C to +85∞C P-44A AD7891AP-2REEL 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±1 LSB –40∞C to +85∞C P-44A AD7891BS-2 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±0.75 LSB –40∞C to +85∞C S-44 AD7891BP-2 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±0.75 LSB –40∞C to +85∞C P-44A AD7891BP-2REEL 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±0.75 LSB –40∞C to +85∞C P-44A AD7891YS-2 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±1 LSB –55∞C to +105∞C S-44 AD7891YS-2REEL 0 V to +5 V, 0 V to +2.5 V, ± 2.5 V 500 kSPS ±1 LSB –55∞C to +105∞C S-44 EVAL-AD7891-1CB Evaluation Board EVAL-AD7891-2CB Evaluation Board NOTES 1S = Plastic Quad Flatpack (MQFP); P = Plastic Leaded Chip Carrier (PLCC). 2Z = Pb-free part.
PIN CONFIGURATIONS PLCC MQFP IN1A IN1B IN2A IN2B IN3A IN3B IN4A IN4B IN5A IN5B STANDBY IN1A IN1B IN2A IN2B IN3A IN3B IN4A IN4B IN5A IN5B V V V V V V V V V V STANDBY V V V V V V V V V V 6 5 4 3 2 1 44 43 42 41 40 44 43 42 41 40 39 38 37 36 35 34 PIN 1 REF GND 7 39 IDENTIFIER V REF GND 1 33 IN6A VIN6A PIN 1 NC 8 38 V NC 2 32 IN6B IDENTIFIER VIN6B REF OUT/REF IN 9 37 V REF OUT/REF IN 3 31 IN7A VIN7A V 10 36 V 30 DD V 4 IN7B DD VIN7B AGND 11 35 AGND 5 29 AD7891 VIN8A VIN8A AD7891 MODE 12 34 MODE 6 28 TOP VIEW VIN8B V TOP VIEW IN8B DB11/TEST 13 (Not to Scale) 33 AGND DB11/TEST 7 (Not to Scale) 27 AGND DB10/TEST 14 32 EOC DB10/TEST 8 26 EOC DB9/TFS 15 31 NC DB9/TFS 9 25 NC DB8/RFS 16 30 CONVST DB8/RFS 10 24 CONVST DB7/DATA IN 17 29 CS DB7/DATA IN 11 23 CS 18 19 20 21 22 23 24 25 26 27 28 12 13 14 15 16 17 18 19 20 21 22 NC = NO CONNECT NC = NO CONNECT DD DD WR RD V WR RD V DGND DGND DB4/A1 DB3/A0 DB4/A1 DB3/A0 DB6/SCLK DB6/SCLK DB2/SWCON DB2/SWCON DB1/SWSTBY DB0/FORMAT DB1/SWSTBY DB0/FORMAT DB5/A2/DATA OUT DB5/A2/DATA OUT
REV. D –5– Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS TIMING CHARACTERISTICS ORDERING GUIDE PIN CONFIGURATIONS PIN FUNCTION DESCRIPTIONS PARALLEL INTERFACE MODE FUNCTIONS Data I/O Lines Parallel Read Operation SERIAL INTERFACE MODE FUNCTIONS CONTROL REGISTER TERMINOLOGY Signal-to-(Noise + Distortion) Ratio Total Harmonic Distortion (THD) Peak Harmonic or Spurious Noise Intermodulation Distortion Channel-to-Channel Isolation Relative Accuracy Differential Nonlinearity Positive Full-Scale Error (AD7891-1, ±10 V and ±5 V; AD7891-2, ±2.5 V) Positive Full-Scale Error (AD7891-2, 0 V to 5 V and 0 V to 2.5 V) Bipolar Zero Error (AD7891-1, ±10 V and ±5 V; AD7891-2, ±2.5 V) Unipolar Offset Error (AD7891-2, 0 V to 5 V and 0 V to 2.5 V) Negative Full-Scale Error (AD7891-1, ±10 V and ±5V; AD7891-2, ±2.5 V) Track/Hold Acquisition Time CONVERTER DETAILS INTERFACE INFORMATION Parallel Interface Mode Serial Interface Mode Simplifying the Serial Interface CIRCUIT DESCRIPTION Reference Analog Input Section Track/Hold Amplifier STANDBY Operation MICROPROCESSOR INTERFACING AD7891 to 8X51 Serial Interface AD7891 to 68HC11 Serial Interface AD7891 to ADSP-21xx Serial Interface AD7891 to DSP5600x Serial Interface AD7891 to TMS320xxx Serial Interface PARALLEL INTERFACING AD7891 to ADSP-21xx AD7891 to TMS32020, TMS320C25, and TMS320C5x AD7891 to TMS320C3x AD7891 to DSP5600x Power Supply Bypassing and Grounding AD7891 PERFORMANCE Linearity Noise Dynamic Performance Effective Number of Bits OUTLINE DIMENSIONS Revision History