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Analog Devices Inc. AD7533CQ
- Part No.:
- AD7533CQ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
AD7533CQ.pdf
- Description:
- IC DAC 10BIT A-OUT 16CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,762
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Product details
Overview
AD7533CQ from Analog Devices is a 10-bit, CMOS, 4-quadrant multiplying DAC in a hermetic 16-lead CERDIP package (Q-16), featuring ±0.05% FSR relative accuracy, 600 ns output settling time, and full TTL/CMOS digital interface compatibility. It delivers precise unipolar and bipolar analog outputs for programmable gain control in industrial instrumentation signal chains.
For engineers reviewing the AD7533CQ datasheet, AD7533CQ pinout, AD7533CQ application, or AD7533CQ equivalent, key selection criteria include its guaranteed ±0.05% FSR linearity over −40°C to +85°C, 5 V–16 V single-supply operation, R-2R ladder architecture with matched thin-film resistors, and direct replacement capability for AD7520 sockets in legacy precision control systems.
Technical Context
The AD7533CQ implements a monolithic thin-film-on-CMOS R-2R ladder with ten binarily weighted current switches, enabling true 4-quadrant multiplication by routing reference current between IOUT1 and IOUT2 terminals. Its switched-current architecture maintains constant ladder-leg current regardless of digital input state, ensuring endpoint linearity without external trimming.
It supports both unipolar (2-quadrant) and bipolar (4-quadrant) operation via offset binary coding, with nominal LSB magnitudes of VREF/1024 and VREF/512 respectively. The device requires only an external op amp and reference to generate voltage outputs, and features latch-free digital inputs eliminating Schottky clamping requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - defines 1024 discrete output steps across full-scale range |
| Relative Accuracy | ±0.05% FSR maximum - guarantees worst-case endpoint nonlinearity over −40°C to +85°C operating range |
| Settling Time | 600 ns to 0.05% FSR - enables high-speed closed-loop control at >1 MHz update rates with 100 Ω load |
| Reference Input Range | ±25 V absolute max, 5 kΩ–20 kΩ input resistance - supports wide-range bipolar references including ±10 V |
| Digital Interface | TTL/CMOS compatible - operates directly with 5 V logic without level-shifting or pull-ups |
| Supply Voltage | 5 V to 16 V - allows flexible single-rail operation in mixed-signal systems with varying rail availability |
| Output Leakage | ±5 nA max (IOUT1/IOUT2) - minimizes error in high-impedance feedback configurations |
Pinout & Package
AD7533CQ uses a 16-lead ceramic dual-in-line package (CERDIP, Q-16) with hermetic sealing suitable for extended temperature and reliability-critical applications. Pin 1 is IOUT1; pins 4–13 are BIT 1 (MSB) through BIT 10 (LSB); pin 14 is VDD; pin 15 is VREF; pin 16 is RFB; pin 3 is GND; pin 2 is IOUT2.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| IOUT1 | DAC Current Output | Main current output terminal; connects to op amp inverting input for voltage output configuration |
| IOUT2 | DAC Analog Ground | Current return path; must be tied to system analog ground to maintain 4-quadrant operation integrity |
| GND | Ground Reference | Logic and substrate reference; separate from IOUT2 but must share low-impedance analog ground plane |
| BIT 1–10 | Digital Input Bits | MSB-to-LSB parallel interface; TTL/CMOS-compatible thresholds (VINH ≥ 2.4 V, VINL ≤ 0.8 V) |
| VDD | Positive Supply | Single power rail (5–16 V); powers internal CMOS switches and logic; no negative supply required |
| VREF | Reference Input | Bipolar reference terminal; accepts ±10 V for full 4-quadrant output scaling; 11 kΩ nominal input resistance |
| RFB | Feedback Resistor Terminal | Connects external RFB resistor to op amp output to set full-scale gain; internal 20 kΩ ladder termination referenced here |
Key Features
| Feature | Design Value |
|---|---|
| Endpoint linearity | ±0.05% FSR max ensures accurate transfer function endpoints without calibration in precision attenuator designs |
| Full 4-quadrant multiplication | Supports bipolar reference and output polarity reversal - essential for AC signal modulation and vector control |
| Latch-free digital interface | Eliminates need for external Schottky clamps - simplifies PCB layout and reduces component count in space-constrained systems |
| Thin-film R-2R ladder | Monolithic thin-film resistors provide stable ratio matching over temperature - critical for long-term gain stability |
| Wide supply range | 5 V to 16 V operation enables use in legacy 15 V industrial rails and modern 5 V embedded systems without level translation |
Applications
| Digitally Controlled Attenuators | Programmable Gain Amplifiers |
|---|---|
Use Scenario: Precision RF and audio signal attenuation in test equipment and communication receivers. IC Role / Device Role / Timing Role: Multiplying DAC providing variable gain coefficient in feedback path of op amp-based amplifier. Use Value: ±0.05% FSR linearity ensures flat frequency response and minimal harmonic distortion across 0–100% attenuation range. |
Use Scenario: Adaptive sensor signal conditioning in industrial process controllers with varying transducer sensitivities. IC Role / Device Role / Timing Role: Digital gain-setting element in programmable instrumentation amplifier topology. Use Value: 600 ns settling time supports real-time gain updates synchronized to sensor sampling clocks up to 1 MHz. |
| Function Generation | Linear Automatic Gain Control |
Use Scenario: Waveform synthesis in arbitrary function generators and calibration sources. IC Role / Device Role / Timing Role: Core D/A element generating precise voltage ramps, triangles, and sine approximations via lookup table. Use Value: Bipolar (offset binary) mode enables seamless zero-crossing transitions and symmetric waveform generation. |
Use Scenario: Closed-loop gain stabilization in optical receiver front-ends and ultrasound beamformers. IC Role / Device Role / Timing Role: Feedback-controlled gain element responding to envelope detector output in AGC loop. Use Value: Low 5 nA output leakage prevents DC drift accumulation in high-gain, low-bandwidth AGC integrators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multiplying DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7520LN | Same 16-pin PDIP footprint but ±0.2% FSR linearity; older NMOS process; higher power (10 mA vs 2 mA) | Legacy socket replacement where ±0.2% accuracy suffices and 15 V supply is fixed | Select AD7520LN only if cost sensitivity outweighs accuracy and power requirements |
| AD7533LN | Identical electrical specs and pinout; plastic PDIP (N-16) instead of hermetic CERDIP (Q-16); same ±0.05% FSR | Commercial-grade environments where hermeticity and extended temperature are not required | Choose AD7533LN for cost-sensitive industrial applications with standard −40°C to +85°C ambient |
Compared with AD7533LN, AD7533CQ provides identical precision and speed but adds hermetic CERDIP packaging for superior moisture resistance and reliability in harsh or long-life deployments; versus AD7520LN, it delivers 4× better linearity and 80% lower supply current while maintaining drop-in socket compatibility.
Availability
AD7533CQ is available at Aetrix Electronics and suitable for industrial instrumentation, military-grade test equipment, and aerospace subsystems requiring stable component supply with guaranteed ±0.05% FSR performance over −40°C to +85°C.
Supply support for AD7533CQ 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD7533 product line delivers cost-optimized, pin-compatible 10-bit multiplying DACs designed for precision analog control in legacy-replacement and new-design applications demanding proven reliability and wide supply flexibility.
FAQ
What is the operating temperature range for AD7533CQ?
The AD7533CQ is rated for operation from −40°C to +85°C. This specification applies specifically to the hermetic CERDIP (Q-16) package variant denoted by the "CQ" suffix, and is validated per Analog Devices' Rev. C datasheet Absolute Maximum Ratings table. The AD7533CQ maintains its ±0.05% FSR relative accuracy across this full range without derating.
Does AD7533CQ require external latching circuitry?
No, the AD7533CQ features a latch-free digital interface. Its CMOS input structure eliminates the need for external Schottky clamping diodes or latches, allowing direct connection to TTL or CMOS logic outputs. This design simplifies board layout and reduces bill-of-materials cost compared to earlier DACs like the AD7520 that required protection components.
Can AD7533CQ operate from a 5 V supply?
Yes, AD7533CQ supports a supply voltage range of 5 V to 16 V. At 5 V, it maintains full functionality including TTL/CMOS compatibility, 10-bit resolution, and specified settling time-though reference input range and output swing are proportionally reduced. The 5 V minimum is explicitly guaranteed in the Rev. C datasheet under Power Requirements.
How does AD7533CQ achieve 4-quadrant multiplication?
The AD7533CQ achieves true 4-quadrant multiplication by routing the reference current between two output terminals-IOUT1 and IOUT2-based on digital input code and reference polarity. When VREF is negative and the code is positive, or vice versa, the output current reverses direction, enabling full bipolar output voltage swing with external op amp configuration as shown in Figure 12 of the datasheet.
Is AD7533CQ pin-compatible with AD7520?
Yes, AD7533CQ is pin- and function-equivalent to the industry-standard AD7520. Both devices share identical 16-lead CERDIP (Q-16) pinout, digital interface behavior, and basic functional block diagram. Analog Devices explicitly recommends AD7533CQ as a lower-cost, higher-accuracy replacement for AD7520 sockets in existing designs.
AD7533CQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 10
- Number of D/A Converters:
- 1
- Settling Time:
- 800ns
- Output Type:
- Current - Unbuffered
- Differential Output:
- Yes
- Data Interface:
- Parallel
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V ~ 15V
- Voltage - Supply, Digital:
- 5V ~ 15V
- INL/DNL (LSB):
- -, ±1 (Max)
- Architecture:
- R-2R
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-CERDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD7533CQ FAQ
1.How can I place an order for AD7533CQ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7533CQ 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 AD7533CQ reliable?
The price and inventory of AD7533CQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7533CQ is usually 5 days.
3.What payment methods are accepted for AD7533CQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7533CQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7533CQ?
AD7533CQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7533CQ 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 AD7533CQ?
For technical support, including AD7533CQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7533CQ requirements.
6.How does Aetrix verify that AD7533CQ is sourced from the original manufacturer or authorized distributors?
All AD7533CQ 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 AD7533CQ meets industry standards.
7.What is the process for return or replacement of AD7533CQ?
All AD7533CQ units undergo pre-shipment inspection (PSI). If there is an issue with AD7533CQ, 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 AD7533CQ part is unused and in its original packaging.
Return procedure for AD7533CQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7533CQ Tags
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