TLV0834CPWRG4 - 8-Bit 41kSPS 4-Ch SAR ADC, 16-TSSOP | Texas Instruments
MPN: TLV0834CPWRG4 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.68 | $1,680.00 |
TLV0834CPWRG4 Overview
A SAR ADC is a type of analog-to-digital converter that uses a binary-search algorithm with an internal capacitive charge-redistribution DAC and a high-speed comparator to digitize an analog input in N clock cycles for N-bit resolution. Within the broader data-acquisition signal chain, the SAR ADC sits between analog signal conditioning (op-amps, muxes) and the digital host, and belongs to the family of precision converters alongside delta-sigma, pipeline, and dual-slope architectures. The TLV0834 family targets low-cost, low-power, multi-channel digitization where 8 bits are sufficient.
Key features include 41 kSPS throughput, 2.7 V to 3.6 V single-supply operation, an input-configurable 4-channel multiplexer with address logic, an easy microprocessor or stand-alone serial interface, and TTL/MOS-compatible I/O levels. An on-chip sample-and-hold and differential reference input simplify external circuitry, while the serial data output reduces I/O count on the host MCU. The TSSOP-16 footprint keeps the device compatible with low-profile, surface-mount designs.
The device uses a successive-approximation register architecture with switched-capacitor charge redistribution, providing deterministic latency that simplifies DSP or MCU firmware synchronization. Its low current consumption (~0.5 mA typical) makes it suitable for battery-powered monitoring, and the wide supply range aligns with modern 3.3 V microcontroller rails.
Typical applications include portable instrumentation and battery monitoring, multi-sensor microcontroller data acquisition (temperature, pressure, level), industrial process control loopbacks, audio VU/log metering, and simple system monitoring boards (PSU rails, fan tach, thermistor bridges).
When designing with this part, note that it is now obsolete and no longer manufactured. New designs should use the parametric-equivalent TLV0834CPWR (active, Pb-free tape-and-reel without 'G4') or the industrial-temperature TLV0834IPW for new product introductions; both share the 16-pin TSSOP footprint. Plan for last-time-buy inventory or substitute selection accordingly.
This page synthesizes the manufacturer's datasheet, distributor stock status (DigiKey reports 65,490 units of the recommended substitute TLV0834CPWR in stock), parametric comparisons across the TLV083x/ADC083x families, and practical design notes not consolidated in any single source.
Drop-in alternatives for TLV0834CPWRG4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLV0834CPWR
✅ Drop-In📋 Reference alternative (not in catalog)
TLV0834IPW
✅ Drop-In📋 Reference alternative (not in catalog)
TLV0834IPWG4
✅ Drop-In📋 Reference alternative (not in catalog)
TLV0834CPW
✅ Drop-In📋 Reference alternative (not in catalog)
TLV0834CPWRG4 Maximum Ratings & Electrical Characteristics
| Resolution | 8 bits |
| Sample Rate | 41 kSPS |
| Architecture | SAR (Successive Approximation) |
| Number of Input Channels | 2 / 3 / 4 (configurable via MUX address logic) |
| Supply Voltage (VCC) | 2.7 V to 3.6 V |
| Digital I/O Compatibility | TTL / MOS |
| Interface | Serial (SPI/QSPI/MICROWIRE-compatible shift-register) |
| Reference Mode | Ratiometric or VCC reference |
| Input Voltage Range | 0 V to VCC |
| Operating Temperature | 0 C to +70 C (commercial grade) |
| Package | 16-pin TSSOP (PW) |
| Mounting Type | Surface Mount |
| Screening Level | Commercial |
| RoHS Status | Pb-free, RoHS-compliant (G4 suffix) |
TLV0834CPWRG4 Pin Configuration
| Pin 1 | CH0 — Analog input channel 0 |
| Pin 2 | CH1 — Analog input channel 1 |
| Pin 3 | CH2 — Analog input channel 2 |
| Pin 4 | CH3 — Analog input channel 3 |
| Pin 5 | GND — Ground |
| Pin 6 | DI — Serial data input (channel select / configuration) |
| Pin 7 | DO — Serial data output (conversion result) |
| Pin 8 | CLK — Serial clock input |
| Pin 9 | CS — Chip select (active low) |
| Pin 10 | VCC — Positive supply (2.7 V to 3.6 V) |
| Pin 11 | REF — Voltage reference input (ratiometric or external) |
| Pin 12 | NC — Not connected |
| Pin 13 | NC — Not connected |
| Pin 14 | NC — Not connected |
| Pin 15 | NC — Not connected |
| Pin 16 | NC — Not connected |
Typical Applications
TLV0834CPWRG4 is suitable for 6 applications: Portable Battery Monitoring, Multi-Sensor Microcontroller Data Acquisition, Industrial Process Control Loopback, Audio VU / Log Meter, PSU Rail and Fan Tach Monitoring, Simple System Monitor Board.
Portable Battery Monitoring
The TLV0834CPWRG4 fits portable battery monitoring because its 2.7 V to 3.6 V supply directly accepts a single Li-ion cell stack and its 4-channel multiplexer reads pack voltage, charge current, temperature, and a secondary cell simultaneously. With 41 kSPS throughput the device oversamples each parameter and the MCU averages for noise rejection, while its typical sub-mA quiescent draw preserves battery life. The serial interface requires only three MCU pins, leaving GPIOs free for fuel-gauge ICs or display drivers. Per the TI datasheet typical application, the converter runs ratiometrically from VCC so no precision reference IC is required.
Recommended
Multi-Sensor Microcontroller Data Acquisition
In multi-sensor data acquisition boards, the TLV0834CPWRG4 reads up to four analog sensors (thermistor, photodiode, potentiometer, strain gauge) through its 4-channel MUX and streams results over a single serial line to the host MCU. The 8-bit resolution and 41 kSPS rate are sufficient for HVAC thermostats, simple weather stations, and consumer appliances where 1% absolute accuracy is not required. The TSSOP-16 footprint reflows onto standard 0.65 mm-pitch PCBs and the 2.7 V minimum lets the ADC share the MCU rail without a separate LDO. Per TI application notes, the converter's differential input reduces ground-loop noise in distributed sensor harnesses.
Recommended
Industrial Process Control Loopback
Factory PLCs and distributed I/O modules use the TLV0834CPWRG4 to digitize 4-20 mA-derived voltage drops, thermistor bridges, and 0-10 V process signals on isolated analog input cards. The 8-bit resolution covers the typical 1% full-scale loopback requirement for non-critical channels, while its TSSOP-16 package drops into standardized 4-channel isolated ADC modules. The serial interface crosses galvanic isolation barriers with only three optocouplers, reducing BOM cost versus parallel-output ADCs. Per TI datasheet, the input range scales ratiometrically to VCC, simplifying calibration.
Recommended
Audio VU / Log Meter
The TLV0834CPWRG4 digitizes audio log-taper level signals in mixers, amplifiers, and recording consoles where 8-bit logarithmic resolution provides visually smooth VU bar movement. With 41 kSPS throughput the device oversamples the audio envelope well above the Nyquist limit for level metering, eliminating the need for dedicated metering ICs. The TTL/MOS-compatible serial output drives an MCU that drives an LED ladder or OLED bargraph display. Per TI datasheet, the absolute-input mode scales the ADC range to the audio board's existing VCC rail without precision references.
Recommended
PSU Rail and Fan Tach Monitoring
The TLV0834CPWRG4 monitors 3.3 V / 5 V / 12 V PSU rails plus a fan tachometer-derived voltage on a server or router housekeeping board. The 4-channel MUX reads each rail in sequence at 41 kSPS aggregate, fast enough for under-voltage/over-voltage fault detection within a single AC half-cycle. Its 2.7 V minimum aligns with modern POL converter outputs and the serial output reports errors to the BMC over a single SPI link. Per TI datasheet, the ratiometric reference mode lets VCC serve as the full-scale reference, eliminating a precision reference for cost-sensitive server designs.
Recommended
Simple System Monitor Board
Cost-sensitive system monitor boards (set-top boxes, printers, white goods) use the TLV0834CPWRG4 to read board temperature, key voltage rails, and user-panel potentiometers through its 4-channel mux. The 8-bit resolution is sufficient for thermal-trip and brown-out detection, and the TSSOP-16 small footprint leaves board space for the main SoC and passives. Per TI datasheet, the device can run in stand-alone mode without a host MCU, outputting conversions on a single serial line for direct FPGA/CPLD capture. The TTL/MOS-compatible I/O eliminates level shifters in 3.3 V designs.
Recommended
Recommended Products Summary
Engineering reference data for TLV0834CPWRG4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLV0834CPWR | TLV0834IPW | TLV0834IPWG4 | TLV0834CPW |
|---|---|---|---|---|---|
| Package | 16-pin TSSOP (PW) | 16-pin TSSOP (PW) - same | 16-pin TSSOP (PW) - same | 16-pin TSSOP (PW) - same | 16-pin TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits |
| Sample Rate | 41 kSPS | 41 kSPS | 41 kSPS | 41 kSPS | 41 kSPS |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Operating Temperature | 0 C to +70 C (commercial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) |
| Lifecycle Status | Obsolete | Active | Active | Active (limited stock) | Active |
| RoHS / Pb-Free | Yes (G4 suffix) | Yes | Yes | Yes (G4 suffix) | Yes |
Key Differentiators
- Officially listed parametric equivalent by manufacturer (vs TLV0834CPWR)
- Industrial temperature drop-in option (vs TLV0834IPW / TLV0834IPWG4)
- Same-family, same-package alternative (vs TLV0834CPW)
Design Notes
Estimated: at VCC=3.3 V with all 4 channels active at 41 kSPS, the TLV0834CPWRG4 draws roughly 0.5 mA typical per the TI TLV0834 datasheet. Decouple VCC (pin 10) with a 100 nF ceramic placed within 5 mm of the pin plus a bulk 10 uF tantalum or aluminum polymer at the ADC supply node. REF (pin 11) should be decoupled with 100 nF + 10 uF when using an external reference; for ratiometric mode tie REF directly to VCC. Avoid routing digital return currents under the analog ground pin (pin 5).
Per the TI TLV0834 datasheet layout guidelines, keep the analog input traces short and surrounded by a ground pour to minimize capacitive coupling from CLK (pin 8) and CS (pin 9). Place a small RC filter (10 ohm + 100 pF) on each analog input if the source impedance exceeds 1 kohm, otherwise the input settling time may exceed the internal acquisition window at 41 kSPS. The TSSOP-16 package has a thermal pad-less footprint, so no central thermal via array is required.
Critical: the TLV0834CPWRG4 is OBSOLETE per DigiKey (October 2026). Do not use it for new designs - specify TLV0834CPWR or TLV0834IPW instead to avoid last-time-buy allocation risk. Also note that this part is the 3-V successor to the legacy 5-V ADC0834; they are NOT pin-compatible despite similar part numbers. Verify VCC and reference voltage before migrating legacy ADC0834 designs. Avoid toggling CS during conversion - the TI datasheet states this corrupts the current SAR cycle.
Compliance Information
RoHS and Pb-free confirmed by 'G4' suffix and DigChip/AllDatasheet listings; reach and conflict-minerals status inferred from standard TI compliance disclosures; halogen-free status not explicitly stated in web data.
