My Inquiry
My Account
Analog Devices Inc. LTC1450CN#PBF
- Part No.:
- LTC1450CN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
LTC1450CN#PBF.pdf
- Description:
- IC DAC 12BIT V-OUT 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1450CN#PBF from Analog Devices (formerly Linear Technology) is a 12-bit parallel-input, rail-to-rail voltage-output DAC in a 24-pin PDIP package, operating from 4.5V to 5.5V with 400µA typical supply current, internal 2.048V reference, and configurable gain of 1 or 2 - used for precision analog control in industrial process instrumentation and battery-powered data acquisition systems.
For engineers reviewing the LTC1450CN#PBF datasheet, LTC1450CN#PBF pinout, LTC1450CN#PBF application, or LTC1450CN#PBF equivalent, key selection criteria include guaranteed monotonicity (±0.5LSB DNL), true rail-to-rail buffered output swing, double-buffered parallel interface, internal power-on reset, and pin-strappable full-scale voltage (4.095V or 2.048V).
Technical Context
The LTC1450CN#PBF integrates a 12-bit R-2R ladder DAC core, buffered output amplifier, and internal 2.048V bandgap reference - all on a single die. Its dual-latch parallel interface supports 12-bit or 8+4-bit loading, with asynchronous LDAC and CLR controls enabling precise timing-critical updates and system-level reset coordination.
Reference architecture separates REFOUT, REFHI, and REFLO pins to support both fixed-gain voltage-mode operation and multiplying DAC configurations. The X1/X2 pin selects gain (1 or 2), while internal power-on reset ensures known-zero output state at startup without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels across full-scale range |
| Differential Nonlinearity | ±0.5LSB - guarantees monotonic transfer function critical for closed-loop control |
| Full-Scale Voltage | 4.095V (gain=2, internal ref) - enables 1mV/LSB step size for high-resolution analog control |
| Supply Current | 400µA typ @ 5V - supports low-power portable and battery-operated instrumentation |
| Output Settling Time | 14µs to ±0.5LSB - meets timing requirements for moderate-speed waveform generation |
| Reference Output | 2.048V ±30mV - stable, low-drift internal reference eliminates need for external precision reference |
| Operating Supply Range | 4.5V to 5.5V - compatible with standard 5V logic and industrial power rails |
Pinout & Package
Package: 24-lead plastic DIP (N package), 0.300" wide, through-hole mountable with industry-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| WR (Pin 1) | Write strobe input | Active-low signal latching data into input registers; rising edge triggers latch action |
| CSLSB (Pin 2) | Chip select for LSB byte | Enables loading of D0–D7 when asserted with WR; supports 8-bit bus multiplexing |
| CSMSB (Pin 3) | Chip select for MSB nibble | Enables loading of D8–D11 when asserted with WR; enables 4-bit partial updates |
| D0–D7 (Pins 4–11) | Parallel data inputs (LSB byte) | Accept 8-bit data for lower portion of 12-bit word; compatible with standard microprocessor buses |
| D8–D11 (Pins 12–15) | Parallel data inputs (MSB nibble) | Accept upper 4 bits; may be tied to D0–D3 for time-multiplexed 8-bit interface |
| GND (Pin 16) | Analog/digital ground | Common return path for reference, DAC core, and digital logic; requires low-impedance connection |
| REFLO (Pin 17) | Lower reference terminal | Connects to GND for standard operation; can be driven externally for multiplying DAC mode |
| REFHI (Pin 18) | Upper reference terminal | Typically tied to REFOUT; accepts up to VCC – 1.5V for flexible gain and reference configuration |
| REFOUT (Pin 19) | Internal reference output | Provides 2.048V ±30mV reference; usable as REFHI source or external reference for other circuits |
| VCC (Pin 20) | Positive supply | 4.5V–5.5V operation; requires local 0.1µF ceramic bypass capacitor to GND |
| VOUT (Pin 21) | Buffered analog output | Rail-to-rail voltage output capable of sourcing/sinking 5mA; settles in 14µs to ±0.5LSB |
| X1/X2 (Pin 22) | Gain configuration | Tie to GND for gain = 2 (4.095V FS); tie to VOUT for gain = 1 (2.048V FS) |
| CLR (Pin 23) | Asynchronous clear | Active-low reset forcing all latches to zero; overrides LDAC and WR during assertion |
| LDAC (Pin 24) | Load DAC latch | Asynchronous update of DAC register from input latches; rising edge transfers data to output stage |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed monotonicity | ±0.5LSB DNL ensures no code skips or glitches in control loop feedback paths |
| Double-buffered parallel interface | Separate input and DAC latches prevent partial updates during multi-byte writes |
| Configurable gain (1 or 2) | X1/X2 pin selection enables 2.048V or 4.095V full-scale without external op-amps |
| Internal power-on reset | Automatically initializes DAC output to zero at power-up, eliminating startup transients |
| True rail-to-rail output buffer | Drives to within millivolts of VCC or GND under no load; maintains 5mA drive capability over temp |
| Reference flexibility | REFOUT, REFHI, REFLO exposed separately to support external references or multiplying DAC topologies |
Applications
| Industrial Process Control | Automatic Test Equipment (ATE) |
|---|---|
|
Use Scenario: Generating precise analog setpoints for temperature, pressure, or flow controllers in PLC-based systems. IC Role / Device Role / Timing Role: Voltage-output DAC providing stable, monotonic control signals to analog input modules or actuator drivers. Use Value: ±0.5LSB DNL and internal 2.048V reference ensure repeatable calibration and long-term stability without external trimming. |
Use Scenario: Stimulus generation for functional testing of analog circuits and mixed-signal ICs. IC Role / Device Role / Timing Role: Parallel-loaded DAC delivering fast, glitch-free waveforms synchronized to test pattern generators. Use Value: 14µs settling time and double-buffered interface enable accurate multi-step stimulus sequences without intermediate artifacts. |
| Battery-Powered Data Acquisition | Feedback Control Loops |
|
Use Scenario: Low-power sensor excitation and calibration in handheld meters and portable environmental monitors. IC Role / Device Role / Timing Role: Micropower DAC generating bias voltages or reference offsets for ADC front-ends. Use Value: 400µA typical ICC at 5V allows extended runtime on coin-cell or Li-ion batteries without sacrificing resolution. |
Use Scenario: Real-time gain adjustment and offset correction in servo motor drives and power supply regulation. IC Role / Device Role / Timing Role: Digitally programmable analog output controlling op-amp gain stages or PWM comparator thresholds. Use Value: Asynchronous LDAC and CLR allow deterministic updates synchronized to control loop cycles, minimizing latency jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit parallel DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1450CG#PBF | Same electrical specs but in 24-pin SSOP (G package) instead of PDIP (N package) | SSOP offers smaller footprint and surface-mount compatibility; PDIP preferred for prototyping and through-hole assembly | Select LTC1450CN#PBF for breadboarding, manual soldering, or legacy through-hole PCBs; choose LTC1450CG#PBF for space-constrained SMT designs |
| LTC1454CN#PBF | Dual-channel version with identical per-channel specs; occupies same 16-pin SO package (not pin-compatible) | Provides two independent 12-bit DACs in one package for multi-axis control or differential output generation | Choose LTC1450CN#PBF when only one DAC channel is needed and PDIP mounting is required; use LTC1454CN#PBF for dual-channel density in SO packaging |
Compared with LTC1450CG#PBF, LTC1450CN#PBF trades board area for ease of hand-soldering and mechanical robustness; versus LTC1454CN#PBF, it provides single-channel simplicity and direct replacement in legacy 24-pin DIP layouts without redesigning signal routing or power distribution.
Availability
LTC1450CN#PBF is available at Aetrix Electronics and suitable for industrial process control, automatic test equipment, and battery-powered data acquisition requiring stable component supply, long-lifecycle support, and consistent parametric performance across temperature.
Supply support for LTC1450CN#PBF 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 acquired Linear Technology in 2017, inheriting its precision analog portfolio including high-performance DACs, references, and signal conditioning ICs.
The LTC1450 series was designed for applications demanding rail-to-rail output, micropower operation, and integrated reference - targeting industrial automation, portable instrumentation, and embedded control where board space and power budget are constrained.
FAQ
What is the full-scale output voltage of the LTC1450CN#PBF?
The LTC1450CN#PBF delivers a 4.095V full-scale output when configured for gain = 2 using its internal 2.048V reference and REFHI tied to REFOUT. With X1/X2 grounded, the output spans 0V to 4.095V in 1mV steps. This value is specified over temperature (±0.10LSB/°C) and remains stable across the 4.5V–5.5V supply range.
Does the LTC1450CN#PBF require an external reference?
No, the LTC1450CN#PBF includes an internal 2.048V reference accessible at REFOUT. It operates fully stand-alone with REFHI tied to REFOUT and REFLO to GND. However, the reference pins are exposed to support external references or multiplying DAC configurations - the internal reference is not hard-wired to the DAC core.
How does the double-buffered interface of the LTC1450CN#PBF work?
The LTC1450CN#PBF uses separate input latches (loaded via WR/CSMSB/CSLSB) and a DAC latch (updated via LDAC). This prevents partial updates: data can be written to input latches asynchronously, then committed to the analog output simultaneously with a single LDAC pulse - essential for glitch-free multi-channel synchronization.
Can the LTC1450CN#PBF operate from a 3.3V supply?
No - the LTC1450CN#PBF is rated for 4.5V to 5.5V operation only. For 3.3V-compatible operation, the pin-compatible LTC1450L variant (e.g., LTC1450LCN#PBF) supports 2.7V–5.5V supplies and uses a 1.22V internal reference. Substituting the standard LTC1450CN#PBF at 3.3V violates absolute maximum ratings and will not meet specifications.
What is the purpose of the X1/X2 pin on the LTC1450CN#PBF?
The X1/X2 pin configures the output buffer gain: tying it to GND sets gain = 2 (4.095V full-scale), while tying it to VOUT sets gain = 1 (2.048V full-scale). This eliminates external gain-setting resistors and enables rapid reconfiguration between voltage ranges without changing hardware layout.
LTC1450CN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 1
- Settling Time:
- 14µs (Typ)
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- Parallel
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- INL/DNL (LSB):
- ±4 (Max), ±0.5 (Max)
- Architecture:
- String DAC
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 24-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
LTC1450CN#PBF FAQ
1.How can I place an order for LTC1450CN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1450CN#PBF 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 LTC1450CN#PBF reliable?
The price and inventory of LTC1450CN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1450CN#PBF is usually 5 days.
3.What payment methods are accepted for LTC1450CN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1450CN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1450CN#PBF?
LTC1450CN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1450CN#PBF 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 LTC1450CN#PBF?
For technical support, including LTC1450CN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1450CN#PBF requirements.
6.How does Aetrix verify that LTC1450CN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1450CN#PBF 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 LTC1450CN#PBF meets industry standards.
7.What is the process for return or replacement of LTC1450CN#PBF?
All LTC1450CN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1450CN#PBF, 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 LTC1450CN#PBF part is unused and in its original packaging.
Return procedure for LTC1450CN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1450CN#PBF Tags
-
MCP47A1T-A0E/LT
Microchip Technology
-
MCP4706A0T-E/CH
Microchip Technology
-
MCP4716A0T-E/MAY
Microchip Technology
-
MCP4716A0T-E/CH
Microchip Technology
-
MCP4726A0T-E/CH
Microchip Technology
-
MCP4725A0T-E/CH
Microchip Technology
-
MCP4725A1T-E/CH
Microchip Technology
-
MCP4725A2T-E/CH
Microchip Technology
-
MCP4726A1T-E/CH
Microchip Technology
-
MCP4726A3T-E/CH
Microchip Technology
-
MCP4726A2T-E/CH
Microchip Technology
-
MCP4726A0T-E/MAY
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
