ADS-112MM

ADS-112 MURATA-PS | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 6

Technical content

Ḥ PRODUCT OVERVIEW

FEATURES

■ 12-bit resolution ■ No missing codes ■ 1MHz minimum sampling rate ■ Functionally complete ■ Small 24-pin DDIP ■ Low-power, 1.3 Watts ■ Three-state output buffers ■ Samples to Nyquist frequencies DATEL’s ADS-112 is a 12-bit, functionally com- plete, sampling A/D converter that is packaged in a space-saving 24-pin DDIP . Requiring ±15V and +5V supplies, a minimum sampling rate of 1MHz is achieved while only dissipating 1.3 Watts. The ADS-112 digitizes signals up to Nyquist frequen- cies. Models are available for use in either com- mercial (0 to + 70°C) or military (–55 to +125°C) operating temperature ranges. Typical applications include spectrum, tran- sient, vibration and waveform analysis. This device is also ideally suited for radar, sonar, video digitiza- tion, medical instrumentation and highspeed data acquisition systems. INPUT/OUTPUT CONNECTIONS PIN FUNCTION PIN FUNCTION

1 BIT 12 (LSB) 24 –15V SUPPL Y

2 BIT 11 23 ANALOG GROUND

3 BIT 10 22 +15V SUPPL Y

4 BIT 9 21 +10V REFERENCE

5 BIT 8 20 BIPOLAR

6 BIT 7 19 ANALOG INPUT

7 BIT 6 18 COMP BIN

8 BIT 5 17 ENABLE (1-12)

9 BIT 4 16 START CONVERT

10 BIT 3 15 EOC

11 BIT 2 14 DIGITAL GROUND

12 BIT 1 (MSB) 13 +5V SUPPL Y

Figure 1. ADS-112 Functional Block Diagram

12 T IB 1 (MSB)

11 BIT 2

10 BIT 3

9 B I T 4

8 B I T 5

7 B I T 6

6 B I T 7

5 B I T 8

4 B I T 9

3 B I T 1 0

2 B I T 1 1

1 BIT 12 (LSB)

17 ENABLE (1-12)

Functional Specifi cations (TA = +25°C, ±VCC = ±15V, +VDD =+5V, 1MHz sampling rate, and a minimum 1 minute warmup unless otherwise specifi ed.) ANALOG INPUTS MIN. TYP . MAX. UNITS Input Voltage Range ➀ Bipolar — ±5 — Volts Unipolar — 0 to +10 — Volts Input Impedence 4.5 5 — kW Input Capacitance — 6 15 pF DIGITAL INPUTS Logic Levels Logic "1" +2.0 — — Volts Logic "0" — — +0.8 Volts Logic Loading "1" — — +10 μA Logic Loading "0" — — -600 μA PERFORMANCE Resolution 12 Bits No Missing Codes (12 Bits; fi n = 1MHz) Over the operating temperature range Integral Non-Linearity 0°C to +70°C — ±1/4 ±3/4 LSB Differential Non-Linearity 0°C to +70°C — ±1/4 ±3/4 LSB Full Scale Absolute Accuracy Unipolar Zero Error † Bipolar Zero Error † Bipolar Offset Error † Gain Error † Internal Reference Voltage, +25°C +9.98 +10.0 +10.02 Volts Drift — ±5 ±30 ppm/°C External Current — — 1.5 mA DYNAMIC PERFORMANCE In-Band Harmonics (–0.5dB) dc to 100kHz — –81 –75 dB 100kHz to 500kHz — –75 –70 dB Total Harm. Distort. (–0.5dB) dc to 100kHz — –78 –75 dB 100kHz to 500kHz — –73 –68 dB PARAMETERS LIMITS UNITS +15V Supply (Pin 22) 0 to +18 Volts –15V Supply (Pin 24) 0 to –18 Volts +5V Supply (Pin 13) 0 to +6 Volts Digital Inputs (Pin 16, 17, 18) –0.3 to +VDD +0.3 Volts Analog Input (Pin 19) –9 to +15 Volts Lead Temp. (10 seconds) +300 °C ABSOLUTE MAXIMUM RATINGS † See Tech Note 1 DYNAMIC PERFORMANCE, CONT. MIN. TYP . MAX. UNITS Signal-to-Noise Ratio (wo/distort., –0.5dB) dc to 100kHz 68 72 — dB 100kHz to 500kHz 67 71 — dB Signal-to-Noise Ratio ➁ (& distort., –0.5dB) dc to 100kHz 66 70 — dB 100kHz to 500kHz 66 70 — dB Two-tone Intermodulation Distortion (fi n = 75kHz, 105kHz, fs = 1MHz, –0.7dB) — –88 –80 dB Two-tone Intermodulation Distortion (fi n = 480kHz, 490kHz, fs = 1MHz, –0.7dB) — –68 –65 dB Input Bandwith (–3dB) Small Signal (–20dB input) 8 10 — MHz Large Signal (–0.5dB input) 6 8 — MHz Slew Rate — ±150 — V/μs Apperture Delay TIme — — 20 ns Effect. Aperture Delay Time — — 16 ns Apperture Uncertainity (Jitter) RMS — — 15 ps Peak — — ±50 ps Overvoltage Recovery Time — — 1000 ns S/H Acquisition Time 160 250 280 ns Conversion Rate (Changing Inputs) +25°C 1 — — MHz 0°C to +70°C 1 — — MHz –55°C to +125°C 1 — — MHz DIGITAL OUTPUTS Data Coding Straight binary/Offset binary Pin 18 High Complementary binary Pin 18 Low Complementary offset binary Logic Level Logic "1" +2.4 — — Volts Logic "0" — — +0.4 Volts Logic Loading "1" — — –160 μA Logic Loading "0" — — +6.4 mA POWER REQUIREMENTS Power Supply Ranges ③ +15V Supply +14.25 +15.0 +15.75 Volts –15V Supply –14.25 –15.0 –15.75 Volts +5V Supply +4.75 +5.0 +5.25 Volts Power Supply Current +15V Supply — +24 +35 mA –15V Supply — –40 –48 mA +5V Supply — +80 +95 mA Power Dissipation — 1.3 1.7 Watts Power Supply Rejection — — ±0.07 %FSR%V PHYSICAL/ENVIRONMENTAL Operating Temp. Range, Case ADS-112MC 0 — +70 °C ADS-112MM, 883 –55 — +125 °C Storage Temperature Range –65 — +150 °C Package Type 24-pin, metal-sealed, ceramic DDIP Weight 0.42 ounces (12 grams) ➀ See Table 3 also ➁ Effective bits is equal to: ➂ For ±12V, +5V operation, contact DATEL 6.02 (SNR + Distortion) – 1.76 + 20 log Full Scale Amplitude Actual Input Amplitude ADS-112 12-Bit, 1MHz, Low-Power Sampling A/D Converters MDA_ADS-112.B01 Page 2 of 6 Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com

Table 4. Output Coding Figure 5. FFT Analysis of ADS-112

ORDERING INFORMATION

MODEL OPERATING TEMP . RANGE ADS-112MC 0 to +70°C ADS-112MM –55 to +125°C ADS-112/883 –55 to +125°C ACCESSORIES ADS-EVAL4 Evaluation Board (without ADS-112) HS-32 Heat Sink for all ADS-112 models MECHANICAL DIMENSIONS INCHES (mm) 0.200 MAX. (5.080) 0.235 MAX. (5.969) 0.600 ±0.010 (15.240) 0.80 MAX. (20.32) 0.100 TYP. (2.540) 0.100 (2.540) 0.018 ±0.002 (0.457) 0.100 (2.540) 0.040 (1.016) 1.31 MAX. (33.27) 11 2 1324 1.100 (27.940) 0.190 MAX. (4.826) 0.010 (0.254) +0.002 –0.001 SEATING PLANE 0.025 (0.635) Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) ±0.010 (±0.254) 3 place decimal (.XXX) ±0.005 (±0.127) Lead Material: Kovar alloy Lead Finish: 50 microinches (minimum) gold plating over 100 microinches (nominal) nickel plating PIN 1 INDEX ADS-112 12-Bit, 1MHz, Low-Power Sampling A/D Converters MDA_ADS-112.B01 Page 6 of 6 Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. © 2009 Murata Power Solutions, Inc. USA: Mansfi eld (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Canada: Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com UK: Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Germany: München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Japan: Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com China: Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com ISO 9001 and 14001 REGISTERED Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com 03/23/09