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Analog Devices Inc. HAS-1204BM
- Part No.:
- HAS-1204BM
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-CDIP (0.900", 22.86mm)
- Datasheet:
-
HAS-1204BM.pdf
- Description:
- ULTRA HIGH-SPEED 12-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:1,216
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Product details
Overview
HAS-1204BM from Analog Devices is a complete 12-bit successive-approximation ADC with internal track-and-hold, 500 kHz conversion rate, 2.0 µs max conversion time, and ±5 V / 0–5 V / 0–10 V analog input ranges - deployed in radar systems and medical instrumentation where high-speed digitization of up to 250 kHz signal content is required.
For engineers reviewing the HAS-1204BM datasheet, HAS-1204BM pinout, HAS-1204BM application, or HAS-1204BM equivalent, key selection considerations include its metal DIP-40 package, TTL-compatible encode command interface, bipolar/unipolar mode support via pin-strapping, and 7 MHz small-signal T/H bandwidth.
Technical Context
The HAS-1204BM integrates a track-and-hold amplifier, 12-bit SAR encoder, and internal timing generator in a single hybrid module - eliminating external clocking or control logic. Its T/H exhibits 4 MHz large-signal and 7 MHz small-signal bandwidth, enabling faithful acquisition of fast transients.
Conversion is initiated by a TTL-compatible rising-edge encode command on Pin 1; digital outputs appear in parallel (12-bit NRZ) and serial formats, with Data Ready (Pin 2) providing strobe timing synchronized to LSB output. Internal D/A converter and comparator enable self-contained successive approximation without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 0.024% FS accuracy and 1.22 mV LSB step size at 5 V range |
| Conversion Rate | 500 kHz - supports continuous sampling of signals up to 250 kHz Nyquist frequency |
| Conversion Time | 2.0 µs max - includes full acquisition and encoding, enabling tight system timing budgets |
| T/H Bandwidth | 7 MHz small-signal - preserves fidelity of fast-rising analog inputs before hold phase |
| Power Dissipation | 2.2 W max - enables use in space-constrained embedded systems with forced-air cooling |
| Operating Temp | −25°C to +85°C - qualified for industrial and defense-grade environmental operation |
| Input Ranges | 0–5 V, 0–10 V, ±5 V - selectable via pin configuration, supporting both unipolar and bipolar signal chains |
Pinout & Package
HAS-1204BM is housed in a hermetically sealed 40-pin metal DIP package with 0.100" lead pitch and 0.400" × 0.900" footprint - designed for high-reliability, thermally stable mounting in ruggedized systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Encode Command | TTL-compatible rising-edge trigger initiating conversion and internal timing sequence |
| 2 | Data Ready | Active-low pulse signaling valid parallel output; trailing edge used to latch data externally |
| 3, 26–27, 33 | Analog Ground | Dedicated low-noise AGND pins for T/H and analog front-end reference stability |
| 4, 13, 34 | +5 V Supply | Logic and internal circuitry power rail; 160 mA max draw supports high-speed digital output drive |
| 5, 30, 36 | −15 V Supply | Negative analog supply for bipolar operation and T/H amplifier headroom |
| 6, 14, 33 | Digital Ground | Isolated DGND plane minimizes digital switching noise coupling into analog path |
| 7–20 | BIT1–BIT12 (MSB–LSB) | Parallel TTL-level outputs; BIT1 = MSB, BIT20 = LSB, NRZ format, standard load drive |
| 22 | Clock Out | Internally generated clock pulses (12 total) for serial output synchronization |
| 28 | D/A Output | Internal DAC output accessible for diagnostics or external feedback loop monitoring |
| 29 | Bipolar Offset | Strap pin: grounded for unipolar mode; shorted to Pin 28 for bipolar offset calibration |
| 38–39 | 5V Range / 10V Range | Analog input selection terminals - voltage applied here defines full-scale range and scaling |
Key Features
| Feature | Design Value |
|---|---|
| Self-contained architecture | Integrates T/H, SAR encoder, timing generator, and reference buffers - no external clocks, drivers, or logic required |
| Mode-selectable input | Hardware-configurable unipolar (0–5 V/0–10 V) or bipolar (±5 V) operation via Pin 28/29 strap |
| Low aperture jitter | 60 ps uncertainty ensures <0.1 LSB error in high-frequency sampling applications like FFT analysis |
| High SNR | 69 dB SNR at 50 kHz input and 500 kHz encode rate - maintains dynamic range for precision waveform capture |
| Thermal robustness | θJA = 25°C/W (free air); junction-to-case θJC = 16°C/W - supports reliable operation up to 150°C junction temp |
Applications
| Medical Instrumentation | Radar Systems |
|---|---|
Use Scenario: Digitizing ECG, ultrasound echo returns, or CT detector signals requiring sub-microsecond timing resolution and minimal harmonic distortion. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs with 12-bit fidelity and 500 kHz sustained throughput. Use Value: 7 MHz T/H bandwidth and 69 dB SNR preserve diagnostic signal integrity across physiological frequency bands. | Use Scenario: Converting IF or baseband radar return signals in pulsed-Doppler or FMCW receivers operating up to 250 kHz modulation bandwidth. IC Role / Device Role / Timing Role: High-fidelity analog front-end digitizer synchronizing to system timing with deterministic 2.0 µs conversion latency. Use Value: Aperture uncertainty of only 60 ps minimizes phase noise impact on Doppler shift measurement accuracy. |
| Test Systems | Waveform Analysis |
Use Scenario: Embedded digitizer in automated test equipment capturing transient responses, power supply ripple, or communication signal edges. IC Role / Device Role / Timing Role: Standalone ADC subsystem handling stimulus-response capture without FPGA or microcontroller intervention. Use Value: Internal track-and-hold eliminates need for external sample-hold ICs, reducing BOM count and layout complexity. | Use Scenario: Real-time spectral analysis of audio, vibration, or RF signals using Fast Fourier Transforms on captured time-domain data. IC Role / Device Role / Timing Role: High-Nyquist ADC feeding DSP engines with clean, low-jitter samples at up to 500 kSPS. Use Value: 85 dB two-tone linearity at 37.5/52.5 kHz prevents intermodulation artifacts from corrupting FFT bin resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7820KP | 8-bit resolution, 1.25 µs conversion time, CMOS SOIC-20 package, no internal T/H | Limited to lower-resolution applications; requires external sample-hold and timing control | Choose when cost and board space outweigh resolution and integration needs |
| MAX1186EEE+ | 12-bit, 1 MSPS, internal reference, 28-pin SSOP, 3.3 V logic, no bipolar input support | Optimized for portable battery-powered systems; lacks ±15 V analog supply and metal-DIP ruggedness | Prefer for modern low-voltage designs where military-grade packaging is not required |
Compared with AD7820KP and MAX1186EEE+, the HAS-1204BM uniquely combines hermetic metal-DIP reliability, ±15 V analog compliance, hardware-selectable bipolar/unipolar modes, and full self-containment - making it irreplaceable in legacy defense, aerospace, and high-stability instrumentation where long-term calibration stability and thermal resilience are mandatory.
Availability
HAS-1204BM is available at Aetrix Electronics and suitable for radar systems, medical instrumentation, and test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for HAS-1204BM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors - founded to advance precision signal conditioning and conversion technologies.
The HAS-1204BM belongs to Analog Devices' legacy high-speed hybrid ADC family - engineered for demanding instrumentation, defense, and scientific applications where integration, thermal stability, and long-term calibration retention are critical.
FAQ
What is the maximum analog input frequency the HAS-1204BM can accurately digitize?
The HAS-1204BM supports accurate digitization of analog signals up to 250 kHz - determined by its 500 kHz conversion rate (Nyquist limit) and 7 MHz small-signal track-and-hold bandwidth. At 250 kHz input, the device maintains ≤0.5 dB amplitude flatness and >70 dB in-band harmonic suppression per specification, ensuring minimal attenuation or distortion in waveform-critical applications like radar pulse analysis.
How does the HAS-1204BM handle bipolar versus unipolar input configurations?
The HAS-1204BM supports both modes via hardware strapping: for unipolar operation (0–5 V or 0–10 V), Pin 29 is grounded; for bipolar operation (±5 V), Pins 28 and 29 are shorted. This configures internal offset binary coding and adjusts gain/offset calibration points - validated in Figures 3 and 4 of the HAS-1204BM documentation. The analog input is applied to Pin 38 (5 V range) or Pin 39 (10 V range), with full-scale definition tied directly to selected mode.
What power supply requirements must be met for reliable HAS-1204BM operation?
The HAS-1204BM requires three regulated supplies: +5 V (≤160 mA), −15 V (≤40 mA), and +15 V (≤54 mA), all with ±0.5 V tolerance. Decoupling is critical - Analog Devices recommends 10–22 µF electrolytic capacitors in parallel with 0.01–0.1 µF ceramics placed adjacent to each supply pin. Failure to meet these specs risks increased noise, reduced SNR, or failure to achieve guaranteed 12-bit linearity across temperature.
Can the HAS-1204BM's serial output be used without additional timing components?
Yes - the HAS-1204BM generates its own Clock Out signal (Pin 22) with 12 precisely timed pulses per conversion cycle, synchronized to internal encode timing. Serial data appears on Pin 21 with setup/hold margins compliant to TTL levels; the trailing edge of each clock pulse serves as the valid data strobe. No external clock generator or timing controller is needed - the HAS-1204BM's self-timed serial interface simplifies system-level synchronization.
What is the significance of the "BM" suffix in HAS-1204BM?
The "BM" suffix designates the industrial temperature grade of the HAS-1204BM, specifying an operating range of −25°C to +85°C. It distinguishes this variant from the HAS-1204SM (−55°C to +100°C), with identical electrical specifications except for temperature qualification. Both share the same 40-pin metal DIP package, pinout, and functional behavior - the BM version is optimized for commercial/industrial systems where extended cold-start capability is not required.
HAS-1204BM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- HAS-1204
- Package/Case:
- 40-CDIP (0.900", 22.86mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 0V ~ -5V, -10V
- Voltage - Supply, Digital:
- 0V ~ -5V, -10V
- Features:
- -
- Operating Temperature:
- -25°C ~ 85°C
- Supplier Device Package:
- 40-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
HAS-1204BM FAQ
1.How can I place an order for HAS-1204BM through Aetrix?
Please submit a Request for Quotation (RFQ) for HAS-1204BM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HAS-1204BM reliable?
The price and inventory of HAS-1204BM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HAS-1204BM is usually 5 days.
3.What payment methods are accepted for HAS-1204BM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HAS-1204BM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HAS-1204BM?
HAS-1204BM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HAS-1204BM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HAS-1204BM?
For technical support, including HAS-1204BM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HAS-1204BM requirements.
6.How does Aetrix verify that HAS-1204BM is sourced from the original manufacturer or authorized distributors?
All HAS-1204BM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HAS-1204BM meets industry standards.
7.What is the process for return or replacement of HAS-1204BM?
All HAS-1204BM units undergo pre-shipment inspection (PSI). If there is an issue with HAS-1204BM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HAS-1204BM part is unused and in its original packaging.
Return procedure for HAS-1204BM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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