MAX1149：Multichannel, True-Differential, Serial, 14-Bit ADCs
The MAX1146–MAX1149 low-power, 14-bit, multichannel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H), voltage reference, and clock. The MAX1146/MAX1148 operate from a single +4.75V to +5.25V supply, and the MAX1147/MAX1149 operate from a single +2.7V to +3.6V supply. All analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation. The 4-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The serial strobe output (SSTRB) allows convenient connection to digital signal processors. The MAX1146–MAX1149 use an internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions. The MAX1146/MAX1148 include an internal +4.096V reference, while the MAX1147/MAX1149 include an internal +2.500V reference. All devices accept an external reference from 1.5V to VDD. The MAX1146–MAX1149 provide a hardware shutdown and two software power-down modes. Using the software power-down modes allows the devices to be powered down between conversions. When powered down, accessing the serial interface automatically powers up the devices. The quick turn-on time allows power-down between all conversions. This technique reduces supply current to under 120µA for quick turn-on. The MAX1146–MAX1149 are available in a 20-pin TSSOP package.
Key Features
| MAX1146, MAX1147, MAX1148, MAX1149: Pin Configuration Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX1146-MAX1149 Data Sheet | MAX1146-MAX1149.pdf |
Parametrics
| Part Number | Resolution (bits) | Input Chan. | Conv. Rate (ksps) | ADC Architecture | Data Bus | Diff/S.E. Input | Internal VREF (V) | External VREF (V) | External VREF (V) | Unipolar VIN (V) | Bipolar VIN (±V) | SNR (dB) | THD (dB) | INL (±LSB) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADC | max | nominal | min | max | max | max | See Notes | |||||||||
| MAX1146 | 14 | 4 | 116 | SAR | SPI | Both | 4.096 | 1.5 | 5 | 4.096 | 4.096 | 81 | -96 | 0.7 | TSSOP/20 | $9.80 @1k |
| MAX1147 | 4 | 2.5 | 3.3 | 2.5 | 2.5 | TSSOP/20 | $11.47 @1k | |||||||||
| MAX1148 | 8 | 4.096 | 5 | 4.096 | 4.096 | TSSOP/20 | $12.60 @1k | |||||||||
| MAX1149 | 8 | 2.5 | 3.3 | 2.5 | 2.5 | TSSOP/20 | $14.62 @1k | |||||||||
Design kits & evaluation modules
Related Products
- MAX11101：14-Bit, +5V, 200ksps ADC with 10µA Shutdown
- MAX1033：8- and 4-Channel, ±3 x VREF Multirange Inputs, Serial 14-Bit ADCs
- MAX1035：8-/4-Channel, ±VREF Multirange Inputs, Serial 14-Bit ADCs
- MAX1067：Multichannel, 14-Bit, 200ksps Analog-to-Digital Converters
- MAX1247：+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
- MAX1248：+2.7V to +5.25V, Low-Power, 4-Channel, Serial, 10-Bit ADCs in QSOP-16
- MAX1246：+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
- MAX1249：+2.7V to +5.25V, Low-Power, 4-Channel, Serial, 10-Bit ADCs in QSOP-16
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX1149BCUP | No Longer Available | MAX1149BCUP+ | TSSOP,;20 pin;45.2 mm² | 0°C to +70°C | No |
| MAX1149BCUP+ | Active | TSSOP,;20 pin;45.2 mm² | 0°C to +70°C | Lead Free | |
| MAX1149BCUP+T | Active | TSSOP,;20 pin;45.2 mm² | 0°C to +70°C | Lead Free | |
| MAX1149BCUP-T | No Longer Available | MAX1149BCUP+T | TSSOP;20 pin | 0°C to +70°C | See data sheet |
| MAX1149BEUP | No Longer Available | MAX1149BEUP+ | TSSOP,;20 pin;45.2 mm² | -40°C to +85°C | No |
| MAX1149BEUP+ | Active | TSSOP,;20 pin;45.2 mm² | -40°C to +85°C | Lead Free | |
| MAX1149BEUP+T | Active | TSSOP,;20 pin;45.2 mm² | -40°C to +85°C | Lead Free | |
| MAX1149BEUP-T | No Longer Available | MAX1149BEUP+T | TSSOP;20 pin | -40°C to +85°C | See data sheet |
- MAX1146-MAX1149.pdf MAX1149
- MAX1146-MAX1149_cn.pdf MAX1149
- MAX1146-MAX1149_cn.pdf MAX1149
