(CS5012A - CS5016) SELF CALIBRATING A/D CONVERTERS

www.DataSheet4U.com CS5012A CS5014 CS5016 16-, 14-, & 12-bit Self-calibrating A/D Converters Features Monolithic CMOS A/D Converters – Microprocessor Compatible – Parallel & Serial Output – Inherent Track/Hold Input Description The CS5012A/14/16 are 12-, 14-, and 16-bit monolithic analog to digital converters with conversion times of 7.2 µs, 14.25 µs and 16.25 µs. Unique selfcalibration circuitry ensures excellent linearity and differential nonlinearity, with no missing codes. Offset and full-scale errors are kept within 1/2 LSB (CS5012A/14) and 1 LSB (CS5016), eliminating the need for calibration. Unipolar and bipolar input ranges are digitally selectable. The pin compatible CS5012A/14/16 consist of a DAC, conversion and calibration microcontroller, oscillator, comparator, microprocessor-compatible 3-state I/O, and calibration circuitry. The input track-and-hold, inherent to the devices’ sampling architecture, acquires the input signal after each conversion using a fast-slewing, on-chip buffer amplifier. This allows throughput rates up to 100 kSps(CS5012A), 56 kSps (CS5014), and 50 kSps (CS5016). ORDERING INFORMATION See “Ordering Information” on page39. True 12-bit, 14-bit, and 16-bit Precision Conversion Times – CS5016: 16.25 µs – CS5014: 14.25 µs – CS5012A: 7.20 µs Linearity Error: ±0.001% FS – Guaranteed No Missing Codes Self-calibration Maintains Accuracy – Accurate Over Time & Temperature Low Power Consumption – 150 mW Low Distortion I HOLD CS 1 23 32 31 + + + 24 RD 25 A0 BP/UP RST BW INTRLV CAL 26 27 36 37 38 39 EOT EOC SCLK SDATA 41 42 43 44 2 3 4 5 6 7 8 10 14 16 17 18 19 20 21 22 D0 (LSB) CS5016 D1 D2 (LSB) CS5014 D3 D4 (LSB) CS5012A D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 (MSB) CLKIN REFBUF VREF Clock Generator Control Calibration Memory Microcontroller AIN 29 Charge Redistribution DAC + Comparator Status Register AGND 30 28 VA+ 34 VA- 12 VD+ 40 VD- 11 DGND 35 TST http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2005 (All Rights Reserved) AUG ‘05 DS14F9 CS5012A CS5014 CS5016 CS5012A CS5012A ANALOG CHARACTERISTICS (TA = TMIN to TMAX; VA+, VD+ = 5V; VA-, VD- = -5V; VREF = 2.5V to 4.5V; fclk = 6.4 MHz for -7, 4 MHz for -12; Analog Source Impedance = 200Ω) CS5012A Parameter* Specified Temperature Range Min Typ Max Units °C LSB12 ∆LSB12 LSB12 ∆LSB12 LSB12 ∆LSB12 LSB12 ∆LSB12 LSB12 ∆LSB12 LSB12 ∆LSB12 LSB12 ∆LSB12 -40 to +85 (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) ±1/4 ±1/8 ±1/2 Accuracy Linearity Error Drift Differential Linearity Drift Full Scale Error Drift Unipolar Offset Drift Bipolar Offset Drift ±1/4 ±1/2 ±1/32 ±1/4 ±1/2 ±1/16 ±1/4 ±1/2 ±1/16 ±1/4 ±1/2 ±1/16 ±1/4 ±1/2 ±1/16 ±1/4 ±1/4 Bipolar Negative Full-Scale Error(Note 1) Drift (Note 2) Total Unadjusted Error Drift Peak Harmonic or Spurious Noise Full Scale, 1 kHz Input Full Scale, 12 kHz Input Total Harmonic Distortion Signal-to-Noise Ratio 1 kHz, 0 dB Input 1 kHz, -60 dB Input Noise Unipolar Mode Bipolar Mode (Note 1) 72 (Note 3) (Note 1) (Note 2) (Note 1) 84 84 Dynamic Performance (Bipolar Mode) 92 88 0.008 73 13 45 90 dB dB % dB dB µVrms µVrms Notes: 1. Applies after calibration at any temperature within the specified temperature range. 2. Total drift over specified temperature range since calibration at power-up at 25 °C 3. Wideband noise aliased into the baseband. Referred to the input. * Refer to Parameter Definitions (immediately following the pin descriptions at the end of this data sheet). Specifications are subject to change without notice. 2 2-8 DS14F9 DS14F8 CS5012A CS5014 CS5016 CS5012A CS5012A ANALOG CHARACTERISTICS (continued) CS5012A Parameter* Specified Temperature Range Min Typ Max Units °C ns ps pF pF pF pF µs µs kSps -40 to +85 25 100 (Note 4) CS5012A Bipolar Mode CS5012A 72 96 7.2 2.5 100 2.8 103 137 Analog Input Aperture Time Aperture Jitter Input Capacitance Unipolar Mode Conversion & Throughput Conversion Time Acquisition Time Throughput (Notes 5 and 6) (Note 6) (Note 6) Power Supplies DC Power Supply Currents IA+ IAD+ (CS5012A) ID+ IDPower Dissipation Power Supply Rejection Positive Supplies Negative Supplies (Note 7) 12 -12 3 6 -3 (Note 7) (Note 8) 84 84 dB dB 150 19 -19 6 7.5 -6 250 mA mA mA mA mA mW Notes: 4. Applies only in track mode. When converting or calibrating, input capacitance will not exceed 15 pF. 5. Measured from falling transition on HOLD to falling transition on EOC. 6. Conversion, acquisition, and throughput times depend on CLKIN, sampling, and calibration conditions. The numbers shown assume sampling and conversion is synchronized with the CS5012A/14/16 ’s conversion clock, interleave calibrate is disabled, and operation is from the full-rated, external clock. Refer to the section Conversion Time/Throughput for a detailed discussion of conversion timing. 7. All outputs unloaded. All inputs CMOS levels. 8. With 300 mV p-p, 1 kHz ripple applied to each analog supply separately in bipolar mode. Rejection improves by 6 dB in the unipolar mode to 90 dB. Figure 13 shows a plot of typical power supply rejection versus frequency. DS14F9 DS14F8 3 2-9 CS5012A CS5014 CS5016 CS5014 CS5014 ANALOG CHARACTERISTICS (TA = TMIN to TMAX; VA+, VD+ = 5V; VA-, VD- = -5V; VREF = 4.5V; CLKIN = 4 MHz for -14, 2 MHz for -28; Analog Source Impedance = 200Ω) CS5014-B Parameter* Specified Temperature Range Min Typ Max Units °C LSB14 LSB14 ∆LSB14 LSB14 ∆LSB14 LSB14 ∆LSB14 LSB14 LSB14 ∆LSB14 LSB14 LSB14 ∆LSB14 LSB14 LSB14 ∆LSB14 LSB14 ∆LSB14 -40 to +85 (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) ±1/4 ±1/2 ±1/8 ±1/4 ±1/2 ±1/32 ±1/2 ±1/4 ±1/4 ±1/4 ±1/4 ±1/2 ±1/2 Drift Total Unadjusted Error Drift Peak Harmonic or Spurious Noise Full Scale, 1 kHz Input Full Scale, 12 kHz Input Total Harmonic Distortion Signal-to-Noise Ratio 1 kHz, 0 dB Input 1 kHz, -60 dB Input Noise Unipolar Mode Bipolar Mode (Note 3) 45 90 µVrms µVrms (Notes 1 and 9) 82 84 23 dB dB dB (Note 2) (Note 1) (Note 2) (Note 1) 94 84 98 87 0.003 dB dB dB dB % ±1/4 ±1 ±1 ±1 ±3/4 ±1 ±3/4 Accuracy Linearity Error Drift Differential Linearity Drift Full Scale Error Drift Unipolar Offset Drift Bipolar Offset Drift Bipolar Negative Full-Scale Error(Note 1) Dynamic Performance (Bipolar Mode) Notes: 9. A detailed plot of S/(N+D) vs. input amplitude appears in Figure 26 for the CS5014 and Figure 28 for the CS5016. * Refer to Parameter Definitions (immediately following the pin descriptions at the end of this data sheet). Specifications are subject to change without notice. 4 2-10 DS14F9 DS14F8 CS5012A CS5014 CS5016 CS5014 CS5014 ANALOG CHARACTERISTICS (continued) CS5014 Parameter* Specified Temperature Range Min Typ Max Units °C ns ps 375 220 14.25 3.0 55.6 3.75 pF pF µs µs kSps -40 to +85 25 100 (Note 4) 275 165 -14 (Notes 5 and 6) -14 -14 (Note 6) (Note 6) Analog Input Aperture Time Aperture Jitter Input Capacitance Unipolar Mode Bipolar Mode Conversion & Throughput Conversion Time Acquisition Time Throughput Power Supplies DC Power Supply Currents IA+ IAID+ IDPower Dissipation Power Supply Rejection Positive Supplies Negative Supplies (Note 7) 9 -9 3 -3 (Note 7) (Note 8) 84 84 dB dB 120 19 -19 6 -6 250 mA mA mA mA mW DS14F9 DS14F8 5 2-11 CS5012A CS5014 CS5016 CS5016 CS5016 ANALOG CHARACTERISTICS (TA = TMIN to TMAX; VA+, VD+ = 5V; VA-, VD- = -5V; VREF = 4.5V; CLKIN = 4 MHz for -16, 2 MHz for -32; Analog Source Impedance = 200Ω; Synchronous Sampling.) CS5016 Parameter* Specified Temperature Range Min Typ 0 to +70 Max Min Typ Max Min Typ Max Units °C -40 to +85 -55 to +125 Accuracy Linearity Error Drift Differential Linearity Full Scale Error Drift Unipolar Offset Drift Bipolar Offset Drift J, A, S J, A, S (Note 1) (Note 2) (Note 10) (Note 1) (Note 2) (Note 1) (Note 2) (Note 1) (Note 2) 16 16 ±2 ±1 ±1 ±1 ±1 ±2 ±3 0.001 0.0015 ±1/4 16 %FS ∆LSB16 Bits LSB16 ∆LSB16 LSB16 ∆LSB16 LSB16 ∆LSB16 J, A, S ±3 ±2 Bipolar Negative Full-Scale Error(Note 1) Drift (Note 2) ±2 ±2 ±3 LSB16 ∆LSB16 Dynamic Performance (Bipolar Mode) Peak Harmonic or Spurious Noise Full Scale, 1 kHz Input Full Scale, 12 kHz Input Total Harmonic Distortion Full Scale, 1 kHz Input Signal-to-Noise Ratio 1 kHz, 0 dB Input 1 kHz, -60 dB Input Noise Unipolar Mode Bipolar Mode (Note 3) 35 70 µVrms µVrms (Notes 1 and 9) 90 92 32 dB dB (Note 1) 100 85 104 91 0.001 dB dB % Notes: 10. Minimum resolution for which no missing codes is guaranteed * Refer to Parameter Definitions (immediately following the pin descriptions at the end of this data sheet). Specifications are subject to change without notice. 6 2-12 DS14F9 DS14F8 CS5012A CS5014 CS5016 CS5016 CS5016 ANALOG CHARACTERISTICS (continued) CS5016-J, K Parameter* Specified Temperature Range Min Typ 0 to +70 25 100 (Note 4) 275 165 -16 (Notes 5 and 6) -32 -16 -32 -16 -32 (Note 6) (Note 6) 50 3.0 375 220 16.25 3.75 pF pF µs µs kSps Max CS5016-A, B Min Typ Max -40 to +85 25 100 CS5016-S, T Min Typ Max Units °C ns ps -55 to +125 25 100 Analog Input Aperture Time Aperture Jitter Input Capacitance Unipolar Mode Bipolar Mode Conversion & Throughput Conversion Time Acquisition Time Throughput Power Supplies DC Power Supply Currents IA+ IAID+ IDPower Dissipation Power Supply Rejection Positive Supplies Negative Supplies (Note 7) 9 -9 3 -3 (Note 7) (Note 8) 84 84 dB dB 120 250 120 19 -19 6 -6 250 120 250 mA mA mA mA mW DS14F9 DS14F8 7 2-13 CS5012A CS5014 CS5016 CS5012A, CS5014, CS5016 SWITCHING CHARACTERISTICS (TA = TMIN to TMAX; VA+, VD+ = 5V ±10%; VA-, VD- = -5V ±10%; Inputs: Logic 0 = 0V, Logic 1 = VD+; CL = 50 pF, BW = VD+) Parameter CS5012A CLKIN Frequency: Internally Generated: Externally Supplied: CS5014/5016 CLKIN Frequency: Internally Generated: Externally Supplied: CLKIN Duty Cycle Rise Times: Fall Times: HOLD Pulse Width Conversion Time: CS5012A