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Analog Devices Inc. LTC1664IGN#TRPBF
- Part No.:
- LTC1664IGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1664IGN#TRPBF.pdf
- Description:
- IC DAC 10BIT V-OUT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,983
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Product details
Overview
LTC1664IGN#TRPBF from Analog Devices (acquired Linear Technology) is a micropower quad 10-bit voltage-output DAC in 16-pin narrow SSOP package, operating from 2.7V to 5.5V supply. Each DAC draws only 59µA, supports rail-to-rail output swing, drives ≥1000pF capacitive loads, and features ±0.75LSB max DNL - ideal for battery-powered trim and calibration circuits.
For engineers reviewing the LTC1664IGN#TRPBF datasheet, LTC1664IGN#TRPBF pinout, LTC1664IGN#TRPBF application, or LTC1664IGN#TRPBF equivalent, key selection factors include guaranteed monotonicity over temperature, sleep mode current of 1µA, reference input impedance independence from code, individual DAC addressability, and compatibility with 3-wire daisy-chained serial interfaces.
Technical Context
The LTC1664IGN#TRPBF implements Linear Technology's proprietary voltage interpolation architecture, ensuring inherent monotonicity without trimming while enabling compact layout. Its four buffered DACs share a single serial interface with 16-bit word structure: 4-bit address (A3–A0), 10-bit data (D9–D0), and 2 don't-care bits.
It supports multiple operational modes including individual DAC loading, simultaneous update of all DACs (address 1111b), and low-power sleep (address 1110b). The analog outputs remain high-impedance during sleep, retaining DAC register values for immediate wake-up restoration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output levels with monotonic transfer function across full temperature range. |
| Differential Nonlinearity | ±0.75LSB max - ensures no missing codes and predictable step response in closed-loop calibration systems. |
| Supply Current per DAC | 59µA at VCC = 5V - enables multi-DAC precision control in ultra-low-power portable instruments. |
| Sleep Mode Current | 1µA total - extends battery life in remote industrial sensors requiring periodic DAC updates. |
| Rail-to-Rail Output Drive | ≥5mA sourcing/sinking, stable with 1000pF load - eliminates external op-amp buffering in space-constrained designs. |
| Reference Input Range | 0V to VCC - supports ratiometric operation when REF tied to VCC, simplifying supply-referenced sensor excitation. |
| Serial Interface Speed | 10MHz max SCK (2.7–5.5V) - allows fast configuration updates in automated test equipment (ATE) trim sequences. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems and automotive cabin electronics. |
Pinout & Package
Package: 16-lead plastic narrow SSOP (GN package), 0.150" body width, JEDEC MS-013AC compliant. Pin pitch: 0.025", footprint compatible with standard SSOP reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | System ground reference | Common return path for analog and digital sections; must be low-impedance connection to minimize noise coupling. |
| VOUT A–D (Pins 2–5) | Analog voltage outputs | Four independent rail-to-rail buffered outputs; each capable of sourcing/sinking ≥5mA with <1LSB settling error. |
| REF (Pin 6) | Reference voltage input | 0V ≤ VREF ≤ VCC; high-impedance, code-independent input (70–130kΩ) - eliminates need for external buffer amplifier. |
| CS/LD (Pin 7) | Chip select / load strobe | Active-low signal enabling SCK and latching shift register contents into selected DAC register(s); TTL/CMOS compatible. |
| SCK (Pin 8) | Serial clock input | Positive-edge-triggered clock for shifting 16-bit words; timing validated up to 10MHz across full temperature range. |
| DIN (Pin 9) | Serial data input | MSB-first 16-bit word: A3–A0 (DAC address), D9–D0 (10-bit code), X1–X0 (don't-care bits). |
| DOUT (Pin 10) | Serial data output | Shift-register echo delayed by 16 SCK edges; enables daisy-chaining multiple LTC1664IGN#TRPBF devices on one 3-wire bus. |
| CLR (Pin 11) | Asynchronous clear | Falling-edge triggered reset forcing all DAC outputs to zero-scale; retains register state after power-on reset. |
| NC (Pins 12–15) | No connect | Internally unconnected; must remain floating or grounded per PCB layout best practices - no routing or vias. |
| VCC (Pin 16) | Positive supply | 2.7V to 5.5V operation; supplies both analog and digital circuitry; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Inherently monotonic architecture | Guaranteed monotonicity over –40°C to +85°C without calibration - reduces firmware compensation overhead in field-deployed systems. |
| Code-independent reference input impedance | 70–130kΩ across all DAC codes - eliminates gain error drift in ratiometric applications using resistive dividers or sensor bridges. |
| Individual DAC addressability | Four unique 4-bit addresses (0001b–0100b) allow selective updating of single channels - critical for dynamic trim in multi-sensor modules. |
| 1µA sleep mode | Entire analog section disabled while retaining DAC register contents - enables microcontroller-initiated wake-up without reinitialization delay. |
| Daisy-chain serial interface | Single 3-wire bus (SCK/DIN/CS) controls up to m devices via DOUT→DIN cascading - cuts BOM count and routing complexity in multi-channel systems. |
| Rail-to-rail output with 85Ω drive strength | Output swings within millivolts of rails under load; 85Ω effective output resistance enables direct driving of 1000pF capacitive loads without stability issues. |
Applications
| Automatic Calibration for Manufacturing | Portable Battery-Powered Instruments |
|---|---|
Use Scenario: Automated test fixtures adjust sensor offset/gain during final production test using programmable voltage references. IC Role / Device Role / Timing Role: LTC1664IGN#TRPBF provides four independent, stable trim voltages synchronized to fixture controller via SPI-like interface. Use Value: ±0.75LSB DNL ensures repeatable calibration accuracy across temperature; 59µA per DAC minimizes fixture power draw during extended burn-in cycles. |
Use Scenario: Handheld multimeter adjusts internal reference and front-end gain stages using low-power DACs between measurements. IC Role / Device Role / Timing Role: LTC1664IGN#TRPBF acts as ratiometric trim DAC with REF tied to VCC, eliminating external reference ICs and saving board space. Use Value: 1µA sleep mode extends AA/AAA battery life beyond 12 months in standby; rail-to-rail output directly interfaces with op-amp inputs without level-shifting. |
| Remote Industrial Devices | Trim/Adjust Applications |
Use Scenario: Wireless sensor node performs periodic self-calibration of pressure/temperature transducers before transmitting data. IC Role / Device Role / Timing Role: LTC1664IGN#TRPBF generates precise bias voltages for analog front-end conditioning, updated only during maintenance windows. Use Value: Daisy-chain capability allows single MCU GPIO to configure multiple DACs in distributed I/O modules; –40°C to +85°C rating ensures reliability in outdoor enclosures. |
Use Scenario: Programmable power supply adjusts output voltage/current limits and protection thresholds via digital control. IC Role / Device Role / Timing Role: LTC1664IGN#TRPBF serves as digitally controlled reference generator for feedback comparators and error amplifiers. Use Value: Four independent outputs enable concurrent adjustment of VOUT, ILIMIT, OVP, and UVP thresholds; 1000pF load drive supports direct connection to comparator inputs with filtering caps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1660CGN#TRPBF | Octal 10-bit DAC in same 16-pin SSOP package; 60µA per DAC; identical timing and interface. | Provides double channel count but requires different address mapping and firmware support for unused channels. | Select when system needs >4 DACs and board space is constrained - avoids adding second IC but increases software complexity. |
| LTC1458IGN#TRPBF | Quad 12-bit DAC; higher resolution (±1LSB INL); wider supply (4.5–5.5V only); no sleep mode; 1.5mA supply per DAC. | Targeted at higher-accuracy lab equipment where power budget permits; lacks micropower capability for battery use. | Choose for metrology-grade applications requiring <1LSB integral nonlinearity - not suitable for low-power or wide-supply designs. |
Compared with LTC1660CGN#TRPBF and LTC1458IGN#TRPBF, the LTC1664IGN#TRPBF uniquely balances 10-bit precision, 1µA sleep current, and 2.7–5.5V operation - making it the only option among the three qualified for extended-life portable and remote industrial deployments.
Availability
LTC1664IGN#TRPBF is available at Aetrix Electronics and suitable for automatic calibration for manufacturing, portable battery-powered instruments, and remote industrial devices requiring stable component supply with long-term lifecycle assurance.
Supply support for LTC1664IGN#TRPBF 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, Inc. (ADI) acquired Linear Technology in 2017 and maintains full technical and manufacturing continuity for legacy Linear products including the LTC series.
The LTC1664IGN#TRPBF belongs to Linear Technology's micropower precision DAC product line, designed specifically for space- and energy-constrained applications demanding rail-to-rail output, guaranteed monotonicity, and robust serial configurability.
FAQ
What is the maximum capacitive load the LTC1664IGN#TRPBF can drive while maintaining stability?
The LTC1664IGN#TRPBF is specified to drive up to 1000pF capacitive loads without external compensation. Its output amplifiers are internally compensated for this load condition, and typical performance curves confirm stable step response with <0.5LSB settling error. For loads exceeding 1000pF, a small series resistor (e.g., 10–20Ω) restores stability - verified in Figure G06 and G07 of the datasheet.
Does the LTC1664IGN#TRPBF require an external reference voltage, or can it operate ratiometrically?
The LTC1664IGN#TRPBF supports both configurations: it accepts an external reference (0V ≤ VREF ≤ VCC) or operates ratiometrically with VREF tied directly to VCC. Its reference input impedance is code-independent (70–130kΩ), eliminating gain drift in ratiometric setups. This flexibility allows direct integration with microcontroller ADC references or precision external sources like LT1460.
How does the sleep mode of the LTC1664IGN#TRPBF function, and what happens to DAC register contents during sleep?
Sleep mode is activated by sending the 4-bit address 1110b to the LTC1664IGN#TRPBF. In this state, analog circuitry powers down to 1µA total supply current, REF and VOUT pins enter high-impedance, but all four DAC register values are retained. Any subsequent valid address (including 0000b "No Change") wakes the device and restores outputs to their pre-sleep values - no reprogramming required.
Can multiple LTC1664IGN#TRPBF devices be connected on a single serial bus, and how is addressing managed?
Yes - the LTC1664IGN#TRPBF supports daisy-chaining via its DOUT pin, which echoes the shift register contents 16 clocks after DIN input. Connecting DOUT of one device to DIN of the next creates a cascaded 16×n-bit shift register. CS/LD and SCK are shared; each device responds only to its assigned 4-bit address (0001b–0100b), enabling independent or simultaneous updates across the chain.
What is the guaranteed monotonicity specification for the LTC1664IGN#TRPBF across its full operating temperature range?
The LTC1664IGN#TRPBF guarantees monotonicity over its full –40°C to +85°C operating range, as confirmed in the Electrical Characteristics table (monotonicity = 10 bits, l symbol). This is achieved through Linear Technology's voltage interpolation architecture - no trimming or calibration is required to ensure monotonic behavior, even at temperature extremes.
LTC1664IGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 10
- Number of D/A Converters:
- 4
- Settling Time:
- 19µs (Typ)
- Output Type:
- Voltage - Unbuffered
- Differential Output:
- No
- Data Interface:
- SPI
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- INL/DNL (LSB):
- ±0.6, ±0.2
- Architecture:
- Oversampling Interpolating DAC
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1664IGN#TRPBF FAQ
1.How can I place an order for LTC1664IGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1664IGN#TRPBF 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 LTC1664IGN#TRPBF reliable?
The price and inventory of LTC1664IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1664IGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1664IGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1664IGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1664IGN#TRPBF?
LTC1664IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1664IGN#TRPBF 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 LTC1664IGN#TRPBF?
For technical support, including LTC1664IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1664IGN#TRPBF requirements.
6.How does Aetrix verify that LTC1664IGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1664IGN#TRPBF 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 LTC1664IGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1664IGN#TRPBF?
All LTC1664IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1664IGN#TRPBF, 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 LTC1664IGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC1664IGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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