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| Part Number | LM4549BVHX | LM4546BVHX | LM4549AVHX | LM4549BVH |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | National Semiconductor | National Semiconductor |
| Product Status | Obsolete | Active | Active | 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 | 3.3V ~ 5.5V | 3V ~ 5.5V | - | 3.3V ~ 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-LQFP (7x7) |
