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| Part Number | LM4550VHX | LM4540VHX | LM4550BVHX | LM4550VH |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | Texas Instruments | National Semiconductor |
| Product Status | Active | Discontinued at Digi-Key | Obsolete | Active |
| Type | - | Audio, AC '97 | Audio, AC '97 | Audio, AC '97 |
| Data Interface | - | Serial | Serial | Serial |
| Resolution (Bits) | - | 18 b | 18 b | 18 b |
| Number of ADCs / DACs | - | 2 / 2 | 2 / 2 | 2 / 2 |
| Sigma Delta | - | Yes | Yes | Yes |
| S/N Ratio, ADCs / DACs (db) Typ | - | - | - | - |
| Dynamic Range, ADCs / DACs (db) Typ | - | 90 / 89 | 90 / 89 | 90 / 89 |
| Voltage - Supply, Analog | - | 4.2V ~ 5.5V | 4.2V ~ 5.5V | 4.2V ~ 5.5V |
| Voltage - Supply, Digital | - | 3V ~ 5.5V | 3V ~ 5.5V | 3V ~ 5.5V |
| Operating Temperature | - | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | - | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | - | 48-LQFP | 48-LQFP | 48-LQFP |
| Supplier Device Package | - | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-TQFP (7x7) |
