MAX113EAG+TG068 - 8-Bit 400ksps 4-Ch ADC | Maxim
MPN: MAX113EAG+TG068 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.64 | $9.64 |
| 10 | $8.5 | $85.00 |
| 100 | $7.1 | $710.00 |
| 500 | $5.95 | $2,975.00 |
| 1,000 | $5.2 | $5,200.00 |
MAX113EAG+TG068 Overview
An ADC (Analog-to-Digital Converter) is a data-acquisition integrated circuit that converts continuous analog voltage signals into discrete digital codes. ADCs are a subset of data converters, which also include DACs (digital-to-analog). The half-flash (or sub-ranging flash) architecture used by the MAX113 family combines two flash converters and a DAC to achieve 8-bit resolution with fewer comparators than a pure flash design, reducing power consumption and die area. The MAX113EAG+TG068 belongs to the MAX113 product family alongside the MAX117 8-channel variant.
Key features include 400 ksps throughput, 1.8 microsecond conversion time, 1 microampere power-down current, single +3V operation, and four single-ended analog inputs. The MAX113EAG+TG068 ships in tape-and-reel packaging with the +TG068 suffix indicating specific reel and packaging orientation. The 24-pin SSOP provides a compact surface-mount footprint suitable for high-density data-acquisition designs.
Typical applications include portable and battery-powered instrumentation, digital signal processing front ends, multiplexing data-acquisition systems, and embedded industrial control. The 1 microampere power-down current makes the device particularly suitable for handheld meters and remote sensor nodes where quiescent draw directly affects battery life. The half-flash architecture delivers 8-bit resolution at sample rates suitable for audio-bandwidth signals and many sensor measurement applications.
When designing with this ADC, ensure the analog input signal bandwidth is below the Nyquist limit for the selected sample rate, and add a low-pass anti-aliasing filter ahead of each input. Decouple AVDD with 0.1 microfarad ceramic and 10 microfarad tantalum capacitors placed close to the supply pin to minimize digital switching noise coupling into the analog front end. The power-down pin should be tied to logic-high only during active conversion windows to maximize battery life in portable designs. According to the Maxim datasheet, the +TG068 suffix is a packaging code that does not affect electrical specifications.
This page synthesizes distributor pricing, drop-in tape-and-reel and tube equivalents, and practical design notes not found in the manufacturer datasheet, providing a consolidated decision guide for engineers evaluating 8-bit SAR-style half-flash ADCs in the SSOP-24 footprint.
Drop-in alternatives for MAX113EAG+TG068 — 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:
MAX113EAG+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX113EAG+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX113CAG+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX117EAG+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX117EAG+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX113EAG+TG068 Maximum Ratings & Electrical Characteristics
| Resolution | 8 bit |
| Number of Input Channels | 4 single-ended |
| Sample Rate | 400 ksps |
| Conversion Time | 1.8 us |
| Supply Voltage | +3 V single supply |
| Architecture | Half-flash |
| Power-Down Current | 1 uA |
| Input Type | Single-ended |
| Data Interface | Parallel (microprocessor-compatible) |
| Package | 24-pin SSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Packaging Code | +TG068 (tape and reel, specific orientation) |
MAX113EAG+TG068 Pin Configuration
| Pin 1 | AIN1 — Analog Input Channel 1 |
| Pin 2 | AIN2 — Analog Input Channel 2 |
| Pin 3 | AIN3 — Analog Input Channel 3 |
| Pin 4 | AIN4 — Analog Input Channel 4 |
| Pin 5 | AGND — Analog Ground |
| Pin 6 | REF — Reference Voltage |
| Pin 7 | AVDD — Analog Supply +3V |
| Pin 8 | DVDD — Digital Supply +3V |
| Pin 9 | DGND — Digital Ground |
| Pin 10 | PD — Power-Down (active low) |
| Pin 11 | CS — Chip Select (active low) |
| Pin 12 | RD — Read (active low) |
| Pin 13 | WR — Write (active low) |
| Pin 14 | INT — Interrupt (active low) |
| Pin 15 | D0 — Data Bit 0 (LSB) |
| Pin 16 | D1 — Data Bit 1 |
| Pin 17 | D2 — Data Bit 2 |
| Pin 18 | D3 — Data Bit 3 |
| Pin 19 | D4 — Data Bit 4 |
| Pin 20 | D5 — Data Bit 5 |
| Pin 21 | D6 — Data Bit 6 |
| Pin 22 | D7 — Data Bit 7 (MSB) |
| Pin 23 | MODE — Mode Select |
| Pin 24 | CLK — Clock Input |
Typical Applications
MAX113EAG+TG068 is suitable for 7 applications: Portable Battery-Powered Instrumentation, Industrial Process Control and Data Acquisition, Embedded Sensor Interface Front Ends, Digital Multimeter and Panel Meter Designs, Medical Monitoring and Point-of-Care Devices, Automotive Sensor Signal Conditioning, Audio Bandwidth Digitization (Low-Fidelity).
Portable Battery-Powered Instrumentation
The MAX113EAG+TG068's 1 microampere power-down current and +3V single-supply operation make it an excellent fit for portable, battery-powered digital multimeters, hand-held oscilloscopes, and field data loggers. The 400 ksps sample rate is more than sufficient for slow sensor signals (temperature, pressure, strain gauge) typical in field instrumentation, while the 1.8 microsecond conversion time allows near-instantaneous capture when needed. Placed directly on the analog front-end board with a low-dropout regulator providing clean AVDD, the ADC draws minimal current between conversion bursts.
Recommended
Industrial Process Control and Data Acquisition
The MAX113EAG+TG068 provides four single-ended input channels suitable for multi-sensor industrial monitoring panels measuring temperature, flow, level, and pressure. Its 8-bit resolution and 400 ksps throughput handle control-loop sample rates well above typical process-control bandwidths (1-10 Hz), with the 8-bit output directly readable by 8-bit microcontrollers. The half-flash architecture provides deterministic conversion latency, simplifying synchronization in closed-loop PID control designs where timing predictability matters more than absolute resolution.
Recommended
Embedded Sensor Interface Front Ends
The MAX113EAG+TG068 works as a parallel-interface ADC front end for 8-bit microcontrollers in embedded sensor hubs. With four input channels, the device can digitize signals from a mix of analog sensors (thermistors, photodiodes, potentiometers) in a compact SSOP-24 footprint that does not consume excessive board area. The +3V operation matches modern MCU supply rails directly, eliminating level shifters. Pair with a low-pass RC anti-aliasing filter (typically 10 kohm / 1 nF for 16 kHz bandwidth) ahead of each input for clean digitization.
Recommended
Digital Multimeter and Panel Meter Designs
Handheld digital multimeters (DMMs) and panel meters often require 8-bit resolution for general-purpose voltage and current measurements where 1 part in 256 accuracy is acceptable. The MAX113EAG+TG068's 1 microampere standby current extends battery life between measurement cycles, while the 400 ksps sample rate supports fast autoranging and peak-detection routines. The four single-ended channels accommodate simultaneous voltage and current measurements with multiplexer switching. Place the ADC near the input protection network for best common-mode rejection.
Recommended
Medical Monitoring and Point-of-Care Devices
Portable medical devices such as pulse oximeters, blood-pressure monitors, and glucose meters benefit from the MAX113EAG+TG068's low power consumption and small SSOP-24 footprint. The 400 ksps sample rate captures physiological waveforms (pulse, respiration) with adequate temporal resolution, while 8-bit resolution suits devices that primarily display trend data or threshold-based alarms. The single +3V supply aligns with two-AAA or coin-cell battery stacks. For higher-accuracy medical imaging or diagnostic instruments, consider a 12-bit or 16-bit SAR ADC instead.
Recommended
Automotive Sensor Signal Conditioning
In non-safety automotive applications such as body control modules, climate-control sensors, and battery management telemetry, the MAX113EAG+TG068 provides sufficient resolution for thermistor-based temperature sensing and potentiometric position sensing. The +3V single-supply operation simplifies integration with 3.3V microcontrollers, and the 4-channel input handles multiple sensor inputs with one chip. For safety-critical applications (airbag, ABS, steering), AEC-Q100-qualified ADCs such as the MAX11120 are required instead.
Recommended
Audio Bandwidth Digitization (Low-Fidelity)
The MAX113EAG+TG068 supports 400 ksps which exceeds the Nyquist rate for full audio bandwidth (44.1 kHz CD quality). However, its 8-bit resolution limits dynamic range to approximately 48 dB, which is acceptable for low-fidelity voice communication, intercom systems, simple voice recorders, and toy audio products. The parallel interface streams samples directly to a DSP or microcontroller without buffering overhead. For high-fidelity audio (CD, DVD, Blu-ray), select a 16-bit or 24-bit sigma-delta audio ADC instead.
Recommended
Recommended Products Summary
Engineering reference data for MAX113EAG+TG068 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX113EAG+ | MAX113EAG+T | MAX113CAG+ | MAX117EAG+ | MAX117EAG+T |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 24-pin SSOP | 24-pin SSOP | 24-pin SSOP | 24-pin SSOP | 24-pin SSOP | 24-pin SSOP |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Number of Input Channels | 4 single-ended | 4 single-ended | 4 single-ended | 4 single-ended | 8 single-ended | 8 single-ended |
| Sample Rate | 400 ksps | 400 ksps | 400 ksps | 400 ksps | 400 ksps | 400 ksps |
| Architecture | Half-flash | Half-flash | Half-flash | Half-flash | Half-flash | Half-flash |
| Supply Voltage | +3V single | +3V single | +3V single | +3V single | +3V single | +3V single |
| Power-Down Current | 1 uA | 1 uA | 1 uA | 1 uA | 1 uA | 1 uA |
| Packaging | Tape & Reel (+TG068) | Tube | Tape & Reel | Tube | Tube | Tape & Reel |
Key Differentiators
- Pin-compatible 8-channel upgrade path (vs MAX117EAG+)
- Lowest standby current in legacy 8-bit ADC class (vs MAX113CAG+)
- Specific reel orientation for high-speed pick-and-place (vs MAX113EAG+T)
Design Notes
The MAX113EAG+TG068 operates from a single +3V supply. Decouple AVDD with a 10 microfarad tantalum capacitor in parallel with a 0.1 microfarad ceramic placed within 5 mm of the AVDD pin to filter low-frequency and high-frequency noise. The 1 microampere power-down current enables aggressive duty-cycling in battery-powered designs; drive PD high only during active conversion windows to maximize battery life.
Separate analog and digital ground planes and join them at a single point near the AGND pin. Keep digital output traces (D0-D7, CS, RD, WR, INT) away from the analog input traces to minimize digital switching noise coupling into the analog front end. Place a 0.1 microfarad bypass capacitor directly on the DVDD pin and connect DGND to the digital ground plane with a short trace to reduce ground bounce.
Add a low-pass RC anti-aliasing filter ahead of each analog input. For 400 ksps maximum sample rate, a 100 kHz cutoff (1.5 kohm + 1 nF) provides sufficient aliasing protection for sensor-bandwidth signals. Source impedance should be below 10 kohm to avoid driving the ADC input beyond its recommended source impedance. Drive AIN with a low-impedance buffer (op-amp follower) if the source impedance exceeds this threshold.
Do not exceed +3.6V on AVDD or DVDD; the part is designed for +3V single-supply operation. Ensure the RD and WR timing requirements from the datasheet are met by the host microcontroller, including the setup and hold times on CS relative to RD/WR. The 8-bit output is unipolar; bipolar input signals require an input signal-conditioning network with level shifting and biasing. When using the power-down mode, allow the wake-up time specified in the datasheet before initiating a conversion.
Compliance Information
RoHS compliant per distributor listings. Not AEC-Q100 qualified - not suitable for automotive safety-critical applications. The part is marked obsolete on the Maxim/Analog Devices lifecycle. Halogen-free status not explicitly stated in available data.